I grew vegetables in raised beds made of old bookshelf wood for many years. Then several years ago we buried that wood along with other biodegradable material in the vegetable garden and grew in the earth This is the best method of growing vegetables. However, the ongoing drought caused plant scarcity and otherwise manageable wildlife then foraged in desperation. Gophers began an onslaught of our vegetables and being a no-kill garden (except for Argentine ants) we tried many kind methods of discouraging them. Finally this year after a dry warm winter, anticipating more animal depredation, I took a friend up on their offer of free used pallets.
We sorted through stacks of pallets and found those stamped with the same name. These pallets are untreated raw pine and of a manageable and portable size. I cut each pallet in half and then nailed and screwed them together. One raised bed needed three pallets. We then covered the bottom with hardware cloth. The areas where the raised beds were to go were leveled and in several cases, de-Bermuda grassed. The pernicious weed had infiltrated our good soil and so shovelful by shovelful we turned and picked. The stolens were unceremoniously tossed into a trashcan which will solarize in the burning hot summer to come, and will then be used in compost.
On top of the leveled ground we placed cardboard. This provided a grass and gopher barrier to the bottom of the bed. Although the cardboard will break down over time, it will in the short run discourage gopher tunneling and weeds. The new pallet bed was placed on top of the cardboard.
Here is one of the tricks of having a raised bed in a hot climate: insulate it! Anything raised above soil level in hot climates are quickly heated and dried out. Raised beds notoriously have dead zones around the edges where the heat cooks the soil, killing microbes and sucking water out of the bed. Lining the inside of the bed with thick cardboard is one way to help insulate the bed, as well as planting cascading plants on the southwest side, or bushy herbs in the ground outside of the bed, or even fastening flakes of straw around the outside. With the pallets we had room to not only line the inside of the bed, but stuff cardboard down into the gaps all around the bed. We repurposed a lot of cardboard.
To fill the bed, we began with old sticks, limbs and logs as we had them. We layered these items as they were available, making sure that earth was touching each layer, and balancing green plant material with the brown as you would in a compost situation: dried tomato vines, fresh passionvine prunings, cut back rose canes, sycamore leaves, heavy clay taken from a new asparagus bed, silt from the rain catchment basins, kitchen scraps including bags of orange rinds after juicing, poopy chicken dirt from inside the hen house, poopy newspapers from the cages in which we kept sick hens indoors (crop binding), decomposable trash such as used tissues, paper towels, cotton ear swabs, junk mail (not glossy or plastic), hair, cotton balls, old cotton T-shirts, and corn husks which many people don’t know are used for compost purposes (visit https://homewarranty.firstam.com/blog/corn-husks-not-just-tamales to get all the details). As we built the beds, we’d take our time filling them as we produced ‘waste’ materials, and threw them in. When the bed was filled (and understanding that the contents would settle) and watered in with rainwater from our 700 gallon tank, we topped it with microbially rich soil from the garden beds (making sure there weren’t any grass bits hiding in it).
I stuck pieces of old 1′ PVC pipe evenly along the sides of the pallets prior to stuffing with cardboard, so that if needed I could insert wood or bamboo pieces and either build an upright sturdy trellis for climbers, or even make arches from bed to bed on which I can grow vines.
For irrigation, I connected each bed to its own set of overhead sprinklers. Each bed has its own shut off. The pipe is resting on the opposite pallet as support, and the joint where it els across the bed are threaded pieces, so the entire length can be raised and pulled out of the way so working in the bed can be easy. The irrigation is hooked up to our well water and is on the irrigation timer for a brief shower every other day. With a lasagna garden, once saturated water will be held in the organic materials that make it up, so after initial regular watering for seed sprouting or hardening off transplants you won’t need to water as much. Roots will grow very deeply.
Because we allow some vegetables to go to seed, we had to transplant vegetables from the ground where the raised beds were placed, into the raised beds. We have a forest of beets, fennel, perpetual spinach, onions, peas, arugula and lettuce in what is still in the ground, and have transplanted selections from these into the beds along with planting seeds. Fortunately we love beet greens, which don’t taste like beets and are more mild than Swiss chard.
Into one bed we’ve planted potatoes in good soil at the bottom, and are gradually filling in with straw as the plants grow. We used leaves in the soil mix, but no woody bits or other lasagna garden materials because we didn’t want to dig potatoes out of piles of old wood, nor burn the potatoes with composting materials in the shallow soil layer.
I am not a good carpenter. I however am great at figuring out what should have been done after I’ve done something. Here are some tips on building pallet beds:
I had thought about placing them on top of flat pallets to be raised off of the ground, so even less susceptible to gophers and grass, but I fortunately nixed that idea before it was enacted. The reason is that that space would be a wonderful habitat for mice or rats, or even snakes. Much as we welcome non-venomous snakes into our garden I really don’t want to startle one with my feet as I’m leaning over a bed. Of course, they would take care of the mouse and rat problem, so maybe it would be a good thing.
I had several bags of 16p galvanized nails given to me years ago, a rescue from a construction dumpster. I mean, kitchen trash-sized bags. I can’t move them, and they sit in my large shed. I opted to use some of them for this project. It was difficult hammering them into the knotty wood of the pallets, and often the holes had to be pre-drilled. Nailed wood also can pull apart, so braces across the width of the pallet to prevent bulging would have been a fantastic idea. For the last two I resorted to screws, which are far easier to both install and remove. Perhaps the nails will have to go to Temecula Recycling. If I can lift them.
We needed to build the beds quickly, as planting season bore down on us here in San Diego even earlier than usual. Here at the beginning of April we are far behind because we haven’t planted out tomato, squash, melon or cucumber seeds yet. Whew! So the beds are not beautiful, but they are functional. You can pretty up pallet beds by attaching wood around the outside, or straw flakes, or other material, and by putting wood around the top. Especially if it is repurposed wood. If you have mouse problems, then try attaching chimney flashing or other wide strips of metal around the base of the bed so that they cannot climb up the sides.
My entire vegetable patch is surrounded by a chicken wire fence, so bunnies can look but they cannot touch. We don’t have squirrels anymore in the garden because California ground squirrels like to see all around them, and our dense food forest is much too scary for them to be comfortable. Using a mild shock wire around the beds or garden fence, using metal flashing to prevent climbing, or enclosing a small garden with wire would all be ways to prevent squirrels and rats from feasting.
We covered the surrounding ground with cardboard and topped with free wood chips, for sheet mulching. This cools the soil, prevents weeds from emerging, helps choke out the Bermuda grass, and also keeps the gopher at bay. He or she must push droppings out of the hole, and if they hit cardboard, or have a shower of bark come down on them, they will go elsewhere.
Because we used non-sterile garden soil as a topper, we’ve had some weed seeds germinate but also some pleasant surprises. We planned on planting dill but found it popping up in our polyculture planting. We had several potato bits sprout, so they needed to be moved into the potato bed. Purslane, which is a weed but also one of the most nutritious greens you can eat, loves the beds so we are harvesting it regularly for chicken feed, personal use and also for making green smoothies as liquid compost for our citrus trees. Because we don’t use chemicals of any sort in the beds, there are a number of native western fence lizards loving the heck out of the beds and helping with our integrated pest management.
Some crops such as corn and tomatoes will need to go into the soil; so far gophers haven’t eaten corn, and the tomatoes can go into gopher cages up against fences or around the property on trellises or trees. The strawberries, Jerusalem artichokes and horseradish seem safe in the ground as well.
Our raised beds are working beautifully already, and the dirt and organics inside of them will be building good soil month after month until it is gorgeous compost. Except for labor, wire and a few PVC parts, they were free to build and free to fill. They can be topped off with good compost after a season, or even given another layer of old tomato vines and dried plant scraps topped with compost for the next planting season if needed. But it shouldn’t unless the height of the soil needs building, because the soil inside the bed is improving all the time.
Give it a try, and make it more attractive, and you’ll have wonderful, safe vegetables and no green waste at all.
Two years ago friend sheet-mulched her very hard, dry dirt yard using cardboard and newspaper topped with very large chunk free wood chips. Last year into this were planted a scattering of California native plants. Most of them have thrived, even surviving a frost and many 100F + days. These have been minimally watered. This week in March, after very low seasonal rainfall, we set off to plant more natives. What we found under the mulch was amazing. That light brown dirt was now moist, worm-filled soil. Under what was left of the cardboard were beautiful fungal hyphae breaking down the under layer of bark chunks into a fine surface compost. The shovel slide through the newspaper and into the ground making for very easy digging. The soil smelled good and felt alive.
Then we wanted to enlarge the planting area past the mulched area, and it was as if we were digging on another property. The shovel barely entered the dirt, and then hit hardpan within an inch of the surface. We had to chop and scrape holes to plant in. Once we did, we heavily sheet mulched around the plants.
Both of these areas, separated by a foot, have had the same rainfall and temperatures, but the mere existence of a thick layer of sheet mulch caused moisture and coolness to be retained, caused protection from hard rain, frost, high heat and dryness, compaction and wind. Just this easy combination of waste materials – wood chips and cardboard – made an incredible change in the soil structure and water retention.
Last summer when the outside temperature was in the 90’s we dug into a pile of bark chips. On the top the wood was almost hot. Three inches down, it was cool and moist even though it hadn’t rained for months. A difference of night and day. This summer I’ll obtain a compost thermometer and take readings.
Leaving the soil bare is like going out in all weather unclothed. Your skin will burn and you’ll become dehydrated in summer; you’ll freeze and also become dehydrated in the cold. In heavy rain and hail you will try to protect yourself by becoming as small a target as possible. Although the soil isn’t cowering, it is being pounded down and de-oxygenated under the onslaught of weather. With no air in the topsoil water runs off rather than sinks in. Soil bakes and there is no microbial life in the desert of the uncovered topsoil. The soil freezes and frosts, and microbes are killed; the moisture in the soil evaporating with the coming of spring. All of this damage is preventable by the application of several layers of mulch, or sheet mulch. You wouldn’t think of being outside for a long time in harsh weather without clothing, so protect your soil the way nature intends, with a carpet of organic matter.
The cardboard had gone on top of weeds. No additives were used in planting, such as gypsum, fertilizer or compost. Watering is done on an as-needed basis with a hose. I am always thrilled and awe-struck when, over and over again, I see proof of what simple soil conservation efforts have on soil building.
California poppies seeds had been planted in the planting holes the year before, and their seeds have rooted in the bark mulch. Their roots will hold the mulch together and also help change it into soil, as poppies are colonizers helping repair disturbed soil. For the price of a packet of seeds, our friend now has the beginnings of a wildflower meadow filling out the spaces between native flowering plants.
Good soil begins the food chain, beginning from what science can so far tell from microscopic mycrobes and ending in this property at least perhaps at the nesting red tailed hawk in the nearest tree, or perhaps the largest local predator, the coyote. Meanwhile the butterflies and other native insects, and all the song birds, will be on display for our friend’s enjoyment.
The sheet mulching will continue on over the slope, and as we plant we mix in pieces of old wood, we plant in shallow depressions in the ground to capture moisture and coolness, we dig a small fishscale swale above the plant to capture flowing water, and we sheet mulch heavily. It will be fascinating to keep checking that poor dirt as it regains microbial and fungal life simply through the protection of sheet mulch.
We can help the planet re-vegetate and reverse climate change. Here are three large projects that have had success and one which is still in the making because it is so vast. Watch these and be inspired, be hopeful, and plant native trees where you live:
Africa’s Great Green Wall:
Subscribe to our channel http://bit.ly/AJSubscribeThe Sahara is creeping into the verdant southern Africa. To counter desertification, the Community of Sahel…
China’s Loess Plateau:
Go to https://FoodAbundance.com to join the Food Abundance movement.Excerpts from Hope in a Changing Climate (http://www.open.edu/openlearn/whats-on/ou-on-th…
Jordan’s Greening the Desert:
In drylands there is a noticeable lack of trees. This situation is kind of a Catch-22. The hotter and drier it is, the less water there is in the ground to provide for plants that can attain height, and the more the leaves of the existing trees must adapt (become smaller) to prevent transpiration and sunburn. Yet the very lack of trees and their extensive root systems, and the shade and habitat they create, and the transpiration that allows humidity to keep the air moist for pollen to survive, is one of the causes of desertification.
So how do we stop this cycle?
First, work on a manageable area. If you have a large property, then start on the area closest to your home or where you need water the most, or where water settles. As in the Annie Lamont title, Bird by Bird, you work on a piece a little at a time.
- Put in earthworks to harvest rainwater. Simple swales or rain catchment basins, perpendicular to the water flow and on contour with your property, will harvest hundreds of gallons of water each rain. You can do them with tractors, you can do them with shovels, you can do small ones with trowels above small plants. Just do them.
- Bury organic matter: hugelkultur. Do you have old wood laying around? Palm trees that are growing and being a fire hazard? Old untreated lumber full of nails? Branches? All of this can be layered into the ground. Bury organic matter downhill from your swales. If you cannot bury, then pound sticks vertically into the ground. The important thing is that you are adding organic material back into your depleted soil. It will hold rainwater, it will activate soil microbes and fungi, it will open oxygen and nutrient channels, it will sequester carbon and make it available to the plants. Our soil is mostly just dead dirt. By layering organic material with dirt you are doing what nature does, but at an accelerated pace. If your soil is unmanageable, or you can’t dig, then layer on top of the soil. Its called, among other things, lasagne gardening. Lay out newspaper, top it with fresh grass clippings or other greens, top that with dried grass clippings, dried leaves or other ‘brown’ materials, and depending upon what you want to plant in this, you can top it with mulch or with a layer of good compost and then mulch. Then plant in it! You create soil on top of the ground.
- Mulch and sheet mulch! Protect your soil from the heat and wind, and from pounding rain. A thin layer of bark will actually heat up and accelerate the evaporation process: add several inches of mulch to the ground. Better yet, sheet mulch by laying cardboard and/or newspaper directly on top of the weeds and layering an inch or more of mulch on top. This can be free mulch from landscapers, old weeds, grass clippings, animal bedding, softwood cuttings… just cover the soil to keep it moist and protected. Thick mulching alone will help keep some humidity in the air and begin soil processes, as well as reduce evaporation by reflected heat that comes from bare earth or gravel.
- Plant native plants. They thrive in our soil. Grow trees that filter the sun and don’t like a lot of water, such as palo verde, or those that take minimal additional water such as desert willow, California redbud, valley oak, or others. Grow tall bushes such as toyon, lemonadeberry, sugarbush, quailbush, ceanothusor others. Use these wonderful plants to invite in birds,butterflies, lizards and other wildlife that will begin pollination and help activate the soil.
- Design your garden for what you want to grow besides natives. Fruit trees? Vegetables? Ornamentals? They can be arranged in your mulched area in guilds to grow cooperatively.
- Grow shade. Fast-growing trees and shrubs are invaluable for protecting – ‘nurserying in’ – less hardy plants. Acacia and cassia are both nitrogen-fixers and will grow quickly to shade your plants, can be cut for green waste in the fall and also attract pollinators. Moringa is completely edible and is also an excellent chop-and-drop tree. There are many others. You need to protect what you plant from the harsh summer sunlight, and using sacrificial trees and shrubs is the most productive way to do it.
- Protect your tree trunks from scorching by growing light vines up them, such as beans or small squash.
Once you have done this process in one area, then move on to the next, like a patchwork quilt. These areas should all be planted in accordance with a larger plan that covers your entire property, so that you plant what you want in the best possible place. However, the earthworks, hugelkultur and mulching can be done everywhere. By following these guidelines, and working one small area at a time, you’ll have success, have trees, shade, food and be helping reverse desertification, one plot at a time.
Happy March! Finch Frolic Garden is officially open, and the trees are bursting into leaf and bloom. Birds are twitterpating and the ten inches of rain we’ve received since October are slowly working through the soil thanks to our earthworks.
Here’s an opportunity to learn just how to create accurate swales and hugelkultur so that they work. Saturday March 11th from 1 -4 we have the privilege of having Alden Hough from Sky Mountain Permaculture hold our first monthly workshop here in the garden. Alden has years of experience with building earthworks on all scales, from guiding excavators across hillsides to hand-dug. Alden will describe how to build swales and hugelkultur beds, show off equipment, and then its hands-on in the garden. You’ll learn how to use a laser level and a bunyip, and get the feel of how to build on contour. Bring your gloves and be prepared to have some fun creating earthworks, so that you can do it properly on your own property.
The workshop fee is $20/person. Please RSVP to firstname.lastname@example.org. Wear appropriate work clothes and sun protection. Complimentary vegetarian refreshments will be available. Attendees may stroll Finch Frolic Garden as well. Don’t wait!
Even if we don’t receive a lot of rain in drylands, we might have fog, sprinkles and other degrees of ambient moisture. This moisture can burn off with reflected heat from hard-packed earth, from gravel and hardscape, and from buildings. It is too irregular and thin to make the use of mist nets feasible. However, a much better way to collect that moisture and turn it into rain is the method nature uses: trees. The layers of a plant guild are designed to capture, soften and sink rainwater, so why not just let them do it? Many trees are dying due to heat, low water table, lack of rainfall and dry air. Replacing them with native and drought-tolerant trees is essential to help put the brakes on desertification.
Please take five minutes, follow this link and listen and have a walk with me into Finch Frolic Garden as this 5-year-old canopy collects moisture and turns it into rain:
Plant a tree!
Here in the drylands of San Diego we need to be especially sure to catch whatever rain may fall. Building good soil is vital for the entire planet because humans are going through decent topsoil like nobody’s business. Here at Finch Frolic Garden we’ve sheet mulched around trees to replicate decades of leaf drop, and on pathways to block weeds, prevent compaction and create good soil for shallow plant roots. We’ve also continued making our pathways work more for us by burying wood (hugelkultur) in the paths themselves. Most of our soil here is heavy clay, so creating drainage for roots is imperative. In sandy soils, creating more fungal activity to hold together the particles to retain water is important. We also need to store rain water when we get it, but not drown the roots of plants. This all can be accomplished by burying wood, the older the better.
Miranda and I have worked on many pathways, but for a few months this year the garden was given a huge boost forward with the help of Noel, a permaculture student and future farmer, who can move mountains in an afternoon with just a shovel.
The chosen pathways had these features: they were perpendicular to water flow, or were between trees that needed supplemental drainage, food and water access, and/or were where rainwater could be redirected. Eventually we’d like to do all the pathways like this but because of time, labor and materials we worked where it was most needed.
The existing sheet mulch was pulled aside. Sections of the pathways were dug up (Noel’s work was very neat; my work is usually much less so). Wood was laid in the hole, and layered back with the dirt.
Notice I said dirt, not soil. We don’t want to disturb good soil because we’d be killing microbes and destroying fungal networks. Dirt is another story; it needs amendment. As we’ve already buried all of our old wood, we timed these pathway ‘hugels’ to coincide with some appropriate tree removal.
Trees were cut down and some climbing roses pruned back out of the pathway, and the green ‘waste’ was used in the nearby pathways.
Old palm fronds went in as well. No need to create additional work – good planning means stacking functions and saving labor.
After the wood was layered back with the dirt, the area was newly sheet mulched. Although the pathways are slightly higher, after another good rain (whenever that will happen) they’ll sink down and be level. They are certainly walkable and drivable as is. Although the wood is green, it isn’t in direct contact with plant roots so there won’t be a nitrogen exchange as it ages. When it does age it will become a sponge for rainwater and fantastic food for a huge section of the underground food chain, members of which create good soil which then feeds the surrounding plants. Tree roots will head towards these pantries under the paths for food. Rain overflow that normally puddles in these areas will penetrate the soil and soak in, even before the wood ages because of the air pockets around the organic material.
The best part about this, is that once it is done you don’t have to do it again in that place. Let the soil microbes take it from there. Every time you have extra wood or cuttings, dig a hole and bury it. You’ve just repurposed green waste, kept organics out of the landfill, activated your soil, fed your plants, gave an important purpose to the clearing of unwanted green material, and made your labor extremely valuable for years to come. Oh, and took a little exercise as well. Gardening and dancing are the two top exercises for keeping away dementia, so dig those hugels and then dance on them!
Burying wood and other organic materials (anything that breaks down into various components) is what nature does, only nature has a different time schedule than humans do. It takes sometimes hundreds of years for a fallen tree to decompose enough to create soil. That’s great because so many creatures need that decomposing wood. However for our purposes, and to help fix the unbelievable damage we’ve done to the earth by scraping away, poisoning and otherwise depleting the topsoil, burying wood hastens soil reparation for use in our timeline.
Another pathway is hard clay and isn’t on the top of my priority list to use for burying wood. However it does repel water due to compaction and because rainwater is so valuable I want to make this pathway work for me by catching rain. I’ve recommended to clients to turn their pathways into walkable (or even driveable) rain catchment areas by digging level-bottomed swales.
A swale is a ditch with a level bottom to harvest water rather than channel water. However many pathways are on slopes or are uneven. So instead of trying to make the whole pathway a swale in an established garden, just look at the pathway and identify areas where the land has portions of level areas. Then dig slight swales in those pathways. Don’t dig deeply, you only have to gently shape the pathway into a concave shape with a level bottom. The swales don’t need to connect. You can cover the pathway and swales with bark mulch and they will still function for harvesting rain and still be walkable.
If the pathways transect a very steep slope, you don’t want to harvest too much water on them so as not to undermine the integrity of your slope. This is a swale calculator if you have a large property on a steep slope.
So up-value your pathways by hugelkulturing them, and sheet-mulching on top. Whatever your soil, adding organics and mulching are the two best things to do to save water and build soil. And save the planet, so good going!
When set in motion the many parts of a plant guild will create a self-sustaining cycle of nutrition and water. By understanding the guild template and what plants fit where, we can plug in plants that fulfill those roles and also provide for us food, building materials, fuel and medicine as well as beauty.
Plant the appropriate plants for where you are placing them, for your soil and water use, and stack them in a guild with compatible plants that you can use. The ground will be covered by a foliar density that will keep grasses and other weeds at bay and provide excellent habitat for a full range of animals and insects. By stacking plants in a guild you are bringing life and abundance back to your garden.
Does it still sound so complicated? Rather than try to learn the roles of all the plants in the world, start small. Make a list of all the plants you want to plant. List them under food bearing, culinary/medicinal herb, craft/building material, and ornamental. Then read up on those plants. What size are they at maturity? Do they need full sun, partial or full shade? If trees, do they have an upright growth so you may plant under them (stonefruit), or do they like to have their roots covered and don’t like plants directly under them (citrus and avocado)?
Are they annuals, perennials or biennials? What is their growth habit: sprawling, rooting where they spread, upright bushy, do they need support and can they cling or do they need to be tied to a support?
Do they require digging up to harvest? Do they fix nitrogen in the soil? Do they drop leaves or are they evergreen? Are they fragrant? When are their bloom times? Fruiting times? Are they cold tolerant or do they need chill hours? How much water do they need? What are their companion plants (there are many guides for this online, or in books on companion planting.)
As you are acquainting yourself with your plants, you can add to their categorization, and shift them into the parts of a plant guild. Yes, many plants will be under more than one category… great! Fit them into the template under only one category, because diversity in the guild is very important.
Draw your guilds with their plants identified out on paper before you begin to purchase plants. Decide where the best location for each is on your property. Tropical plants that are thirsty and don’t have cold tolerance should go in well-draining areas towards the top or middle of your property where they can be easily watered. Plants that need or can tolerate a chill should go where the cold will settle.
Once it is on paper, then start planting. You don’t have to plant all the guilds at once… do it as you have time and money for it. Trees should come first. Bury wood to nutrify the soil in your beds, and don’t forget to sheet mulch.
Remember that in permaculture, a garden is 99% design and 1% labor. If you think buying the plants first and getting them in the ground without planning is going to save you time and money, think again. You are gambling, and will be disappointed.
Have fun with your plant guilds, and see how miraculous these combinations of plants work. When you go hiking, look at how undisturbed native plants grow and try to identify their components in nature’s plant guild. Guilds are really the only way to grow without chemicals, inexpensively and in a way that builds soil and habitat.
You can find the rest of the 9-part Plant Guild series here: Plant Guilds: What are they and how do they work? The first in a series. , Plant Guild #2: Canopy , Plant Guild #3: Sub-Canopy , Plant Guild #4: Nitrogen-Fixers, Plant Guild #5: Mining Plants, Plant Guild #6: Groundcovers, Plant Guild #7: Vines, Plant Guild #8: Insectiaries .
In most ecosystems that offer easy food for humans, the ground needs to be covered. Layers of leaves, organic matter from animals (poo, fur, carcasses, meal remains, etc.) , dropped branches and twigs, fallen flowers and fruit, and whatever else gravity holds close to the earth, compost to create soil and retain water and protect the soil from erosion and compaction. Areas that don’t have this compost layer are called deserts. If you want to grow an assortment of food for humans, you have to start building soil. Even in desert communities where there are some food plants growing, such as edible cactus, mesquite beans, etc., there is biodiversity on a more microscopic scale than in old growth forests. In deserts the soil needs to absorb what little rain there is and do it quickly before it evaporates, and plants have leaves adapted to have small leaf surfaces so as not to dry out, and there are few leaves to drop. Whereas in areas where there are large forests the weather is usually wetter, tall plants and thick underbrush provide multiple layers of protection both on the plants and when they fall to layer the earth.
A quick way to build soil in plant guilds is to design for plants that will cover the ground. This isn’t necessarily the same groundcover as you would use to cover embankments. For instance, iceplant can be used in a pinch, but it really isn’t the best choice in most plant guilds unless you are in a very dry climate, and your plant guild is mostly desert-type plants: date palm, etc. Annuals can be squash or other aggressive food-producing vines such as unstaked tomatoes. However you don’t need to consider just ground-hugging plants; think sprawling shrubs.
When guests tour through Finch Frolic Garden, they often desire the lush foresty-feel of it for their own properties, but have no idea how to make it happen. This is where what I call ‘placeholder plants’ come in. Sprawling, low-cost shrubs can quickly cover a lot of ground, protect the soil, attract insects, often be edible or medicinal, be habitat for many animals, often can be pruned heavily to harvest green mulch (chop-and-drop), often can be pruned for cuttings that can be rooted for new plants to use or to sell, and are usually very attractive. When its time to plant something more useful in that area, the groundcover plant can be harvested, used for mulch, buried, or divided up. During the years that plant has been growing it has been building soil beneath it, protecting the ground from compaction from the rain. There is leave mulch, droppings from lizards, frogs, birds, rabbits, rodents and other creatures fertilizing the soil. The roots of the plant have been breaking through the dirt, releasing nutrients and developing microbial populations. Some plants sprawl 15′ or more; some are very low-water-use. All of this from one inexpensive plant.
Depending upon your watering, there are many plants that fit the bill, and most of them are usable herbs. Scented geraniums (Pelargonium spp.), lavender, oregano, marjoram, culinary sage, prostrate rosemary, are several choices of many plants that will sprawl out from one central taproot. Here in Southern California, natives such as Cleveland sage, quail bush (which harvests salt from the soil), and ceanothus (California lilac, a nitrogen-fixer as well), are a few choices. Usually the less water use the plant needs, the slower the growth and the less often you can chop-and-drop it. With a little water, scented geraniums can cover 10 – 15 feet and you can use them for green mulch often, for rooted cuttings, for attracting insects, for medicine and flavoring, for cut greenery, for distillates if you make oils, etc.
Groundcover plants shouldn’t be invasive. If you are planting in a small guild, planting something spreading like mint is going to be troublesome. If you are planting in larger guilds, then having something spreading in some areas, such as mint, is fine. However mint and other invasives don’t sprawl, but produce greenery above rootstock, so they are actually occupying more space than those plants that have a central taproot and can protect soil under their stems and branches. Here at Finch Frolic Garden, we have mint growing freely by the ponds, and in several pathways. Its job is to crowd out weeds, build soil, and provide aromatherapy. I’d much rather step on mint than on Bermuda grass, and besides being a superb tea herb, the tiny flowers feed the very small bees, wasps and flies that go unsung in gardens in favor of our non-native honeybees (there are no native honeybees in North America).
Here’s a general planting tip: position plants with fragrant leaves and flowers near your pathways for brush-by fragrance. You should have a dose of aromatherapy simply by walking your garden path. Mints are energizing, lavenders calming, so maybe plan your herbs with the pathways you take in the morning and evening to correspond to what boost you need at that time.
Consider groundcover plants and shrubs that will give you good soil and often so much more.
Next up: Vining Plants.
You can find the entire 9-part Plant Guild series here: Plant Guilds: What are they and how do they work? The first in a series. , Plant Guild #2: Canopy , Plant Guild #3: Sub-Canopy , Plant Guild #4: Nitrogen-Fixers, Plant Guild #5: Mining Plants, Plant Guild #7: Vines, Plant Guild #8: Insectiaries, Plant Guild #9: The Whole Picture.
Our sixty degree weather here in Fallbrook, CA , gave us the opportunity to work in our garden. A year ago – 2014 – it snowed on New Year’s Eve. This year the nights are frosty, the days mercifully warmer, and the rain frustratingly rare. Our promised El Nino rains are expected to hit in force within the next couple of months. Weather they do or not, focusing on catching every precious drop in the soil, and protecting the ground from erosion and compaction, is paramount.
The last day of 2015 Miranda and I spent working one of our vegetable garden beds, and reshaping our kitchen garden. When we redesigned this garden by removing (and burying) the raised beds, hugelkulturing and planting, we made a lovely Celtic design.
However the plants just won’t respect the design, so we’ve opted to lessen the pathways, turning the beds into keyhole designs for more planting space. I’ll blog more about that in the future. Because the pathways have been covered in cardboard and woodchips (sheet mulched), the soil below them is in very good shape, not dry and compacted.
This bed has been home to sweet potatoes and various other plants, so although I try to practice the no-dig method, where you have root vegetables you must gently probe the soil for goodies. We left some of the roots, so sweet potatoes will again rise in this bed.
We planted in rows. Usually I mix up seeds, but this time I wanted to demonstrate polyculture in row form. We planted three rows of organic potatoes (purchased from Peaceful Valley Organics), with a row of shallots between them. Between the root vegetable rows we planted a row of fava beans, and a row of sugar pod peas. Around the edges Miranda planted rows of bull’s blood beets, Parisienne carrots, and maybe some parsnips. This combination of plants will work together in the soil, following the template of a plant guild. We left the struggling eggplant, which came up late in the year after the very hot summer and has so far survived the light frost.
On top of the bed we strew dead pond plants harvested from our small pond near our house, which will be receiving an overhaul soon (hopefully before the Pacific chorus frogs start their mating season in force). We didn’t water the seeds in, as there is rain predicted in a few days. The mulch on top will help protect the seeds from hungry birds.
A good way to spend the last day of the year: setting seeds for food in the spring.
Then on January 1 I decided it was a good opportunity to clear out the excess pickerel that had taken over our lower small pond. With the well off for the winter, and very light rainfall, this pond has gone dry. A perfect opportunity for me to get in there with a shovel, especially knowing that I already had a chiropractor’s appointment set for Monday (!).
The mud was slick and spongy, but not unsafe, and not nearly as smelly as I had anticipated. Pickerel is not a native to San Diego, but it is a good habitat pond plant and it has edible parts. I wasn’t tempted, however. Its roots are thick and form a mat several inches thick hiding rhizomes that are up to an inch in diameter. I’d cut into the mass from several sides, pull the mass out with my gloved hands and throw the heavy thing out of the pond. Its good to be in contact with the earth, in all its forms. I couldn’t think of a better way to use the holiday afternoon.
I moved at least a ton of material in four hours. Just before sunset I decided that I was done. About an hour before that, my body had decided that I was done, but I overrode its vote to finish. I left some pickerel for habitat and looks, and will try to contain it by putting some sort of a physical barrier along the roots, such as urbanite.
We also might harvest some of the silty clay for use in the upper pond, although the prospect of carting heavy wet mud uphill isn’t as appealing as it might sound. That needs to happen today or tomorrow, as the aforementioned rain is expected, and I want to fill this pond again for the frogs.
One good thing about the pond going dry is that there are no more mosquito fish (gambuzia) in it. Mosquito fish are very invasive, and love to eat frog’s eggs and tadpoles far better than they do mosquito larvae. When the pond fills with non-chemically treated water (rain and well water), some of the microscopic aquatic creatures will repopulate the water. I’ll add some water from the big pond as well to make sure there are daphnia and other natural water friends in it, which will do a much better job at mosquito control without sacrificing our native frogs. I can’t get all the gambuzia out of our big pond, but at least they are out of the other two. Once dragonflies start in again, their young will gladly eat mosquito larvae.
So here on the morning of the second day of 2016, I lay in my warm bed prior to rising to start the chores of the day, stiff as an old stiff thing as my body adjusts to strenuous manual labor again, looking forward to more gardening duties to prepare Finch Frolic Garden for the reopening March 1, and for the rains.
The best part of heavy gardening duties is that I can finish off the Christmas cookies guilt-free!