DryStoneGarden

I try to do one or two posts about lawn-to-garden conversions every spring, sort of an annual contribution to the anti-lawn propaganda movement. So far this is the only one I’ve photographed this year. I don’t have a lot to say about it, just that it seems clear to me how much better the planting looks than the lawn. I guess the previous owner kept the lawn so it would be possible to drive a camper van to the backyard. You can’t drive into the backyard anymore.

During the drought the new owner let the lawn dry out, then we replaced it with this simple little planting — mostly evergreen, some purple flowers and purple foliage, a bit of eye-catching yellow when the Kniphofia blooms, low-water, relatively low-maintenance, plants that are long-lived and can survive the unskilled ministrations of the mow-and-blow gardeners. Like many lawn conversion projects, it needed a low-cost path through the planting and, in this case, a couple of steps made with granite curbstones. Pretty straightforward, and such a huge improvement. These are the kind of ‘before and after’ images that I think about when I get pushback against the idea of removing front yard lawns. I really struggle to understand why people cling to their lawns.

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We sheet mulched over the dead lawn, but more to smother weeds than the grass. The grass was pretty well dead by the time I first saw it, and to me the planting brought the space back to life.

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The New Low Water Planting

This lawn conversion is around the corner from the last one I showed. The lawns were similar, full sun and gently sloping, and we used a lot of the same plants, emphasizing purples, yellows, and green. It’s a bigger space, though, so things are on a somewhat bigger scale. Instead of one Chinese Pistache, we planted 3 Raywood Ash, and instead of one Plum we planted three Nyssa sylvatica. Instead of Sesleria autumnalis we used a larger grass, Lomandra ‘Breeze’, instead of fifteen Salvia nemerosa, there are twenty four. Overall though, it’s fairly similar, a plant palette we use regularly for front yards on that side of the hills — low-water, lowish-maintenance, deer-resistant, a mix of natives and other mediterranean species emphasizing purples, yellows, and green.

Star Jasmine and the Old Lawn

We covered this lawn with mulch from cutting trees in the yard and left it for six months while there was work done on the house. The mulch layer was partly to smother the lawn, but also to protect the soil from the construction workers, who always seem to park on the lawn despite efforts to dissuade them.

Google Earth View of the Front Door and the Old Tree

The original landscape didn’t have a pathway to the front door. There was one from the driveway to the door, but visitors parked at the curb and walked across the lawn. I’m not sure how that was tolerated for so many years. Visitors should have a proper way to get to the front door.

The New Pathwy to the Front Door

The path uses three different types of stone. The stone sleepers are flamed basalt, the fill pavers are handcut setts of black limestone, and the soldiers are tumbled granite.

Nepeta

Moonshine Yarrow, Salvia nemerosa, and Nepeta

As I was said at the top, this is one of our standard Contra Costa lawn conversion plant palettes. Purple and yellow/gold with mostly green foliage. Nepeta, Salvia nemerosa, Penstemon heterophyllus, and Geranium ‘Rozanne’ are the purples blooming now. Lavender and Salvia ‘Mystic Spires’ will add more purple soon. Moonshine Yarrow, Coleonema ‘Sunset Gold’, and Geum are compatible yellows. Lomandra ‘Breeze’ is a nice green backdrop, gives it a meadow-y feel. There are young shrubs in the background and of course the trees which are still getting established, but for now, while everyone is first looking and judging the lawn conversion, these are the plants they see.

Salvia nemerosa and Moonshine Yarrow

Penstemon heterophyllus and Lomandra Breeze

Coleonema Sunset Gold, Penstemon heterophyllus and Geum

The geranium and geum can be eaten by deer depending on the garden and where they are located in it. Salvia nemerosa ocassionally gets nibbled as well. I’ve never seen any of the others eaten.

Coleonema Sunset Gold and Geranium Rozanne

That concludes lawn conversion week (month) here at DryStoneGarden. There are a lot of resources out there for people considering doing it. Davis has a thorough pdf that I was looking at recently, the latest one to catch my attention. Anyone considering it should go for it. A garden is so much better than a tired old lawn.

This is how we usually do lawn conversions these days, a modified version of sheet mulching. Unlike the last lawn I showed, which was mostly just regular turf grass, this lawn had bermuda grass in it, a tougher beast to slay, really tenacious at fighting its way up through newspaper or cardboard. Instead of immediately sheet mulching and planting, I find it better to first cover the lawn with weed cloth and mulch for a few months — letting the Bermuda grass expend energy trying to fight up through the cloth — and then attack it wherever it makes it to the surface. It takes a little more patience, but it doesn’t add much labor or cost. It’s easy enough, once I’m ready to plant, to sweep the mulch off, pull the cloth, and finish off the Bermuda grass while I do the grading and prep for the new planting. Then, I do the new planting and put the mulch back on top of it, take the weed cloth off to use on my next project. Lawns are easy to kill, it’s the weeds in the lawn that sometimes take a little extra care.

Above is a before view from google earth, below is the lawn covered by mulch during the summer. The Bermuda grass came back especially strong at the edges, where it had roots going underneath the concrete of the front walkway and the curb. We got it pretty well by the time we finished the installation, but it still requires vigilance along the walkway.

A lot of lawn conversions involve adding a path through the new planting. This one needed steps as well.

Before and after views from a couple more angles are below. As I said in my last post, a front garden’s a lot better than a tired old lawn. (more…)

This is another way of removing a lawn, smothering it with newspaper or cardboard and a thick layer of mulch. I’ve posted about this in the past, but my proselytizing is an ongoing thing; I think it’s the most efficient way to convert a lawn. Now that the drought has ended (temporarily?), I suppose people might lose interest in taking out their lawns, but so far the momentum seems to be continuing. It helps that EBMUD still has its rebate program.

We started by turning off the irrigation and letting the lawn dry out in the sun for a couple of months.

We left most of the lawn in place, but we did dig out the edge of the lawn so the mulch wouldn’t spill onto the sidewalk. I then used the dug out pieces of sod and some compost to make a berm towards the back of the planting; I put the new tree in the berm. The berm always settles a fair bit after the compost and sod decompose, but it gives a subtle bit of topography to the new planting, helping it look a little less like a former lawn. After digging out the edges, we spread about an inch of compost over the rest of the lawn and then planted directly into it. That generated another little pile of old sod, which I added to the berm.

We then covered the ground with a layer of wet newspaper, 8-12 sheets thick and overlapping by about 4 inches. I presoak the newspaper in a bucket as I go, so that it sticks together like paper maché. We then run our drip irrigation on top of the newspaper and then cover everything with mulch before the paper can dry.

A bit of the lawn manages to fight it’s way up through the layers of newspaper over the next few months, but a couple of quick maintenance visits can deal with that, plus the new plants will also suppress the old lawn as they grow in. It all takes a lot less labor than digging out the entire lawn, and the lawn and newspaper layer enrich the soil as they decompose.

The newspaper also takes advantage of the fact that roots go through it but the tops of plants do not. The poppies scattered on top of the newspaper layer can send roots down into the soil, but any existing weed seeds cannot push their way up from beneath it. Simple and efficient and so much better than mowing and watering a lawn.

This is a lawn conversion we did a couple of years ago. Usually we convert lawns by leaving the lawn in place and covering it with sheet mulch. I’ve posted about the process in the past. This one was a little different. When I first got involved, most of the lawn had already been removed by hand. The client had also decided to do a cover crop for a season to regenerate the soil. Generally, I think that by sheet mulching, the decomposing lawn will accomplish pretty much the same thing as a cover crop. But a cover crop is certainly another effective way to do it. This lawn had tired, depleted soil, and several Mulberry trees had roots everywhere that would compete with the new plants, so I’m sure the cover crop was beneficial.

We used vetch as the cover crop. We seeded it just after Thanksgiving, gave it about five months to grow, and then removed it at the end of April. There are a few ways of dealing with the vetch. Most of the research and info about it is geared towards agriculture, and my experience with it was for lawn and veggie garden projects rather than ornamental plantings. For the lawns and veggie gardens, I had tilled it directly into the soil. For this garden, to avoid disturbing the roots of the mulberry trees, we left the roots of the vetch in place and tore off the tops of the plant, chopped those tops a bit, and spread them on the surface to rot beneath the fir bark mulch. Supposedly that gives less nitrogen gain, but the layer of vetch helps retain moisture in the soil. I don’t really know, there are too many variables to conclude anything other than that the planting did well enough with this method. I’m still partial to sheet mulch and generally still recommend that method, but I’d be happy enough to do it again this way. Seeing the vetch grow throughout the winter was fun, and rolling it away in the spring went quickly and was actually kind of fun too. I was worried the vetch might reseed itself and make a mess in the new planting, but as far as I know it hasn’t been a problem. The photo below was when we were half way through removing the vetch.

Above shows the new planting with the dried out vetch hidden beneath the fir bark mulch. Below is what it looks like now after two years of growth. This, with the Bearded Iris in bloom, is the showiest the planting gets. They’re pretty much the biggest flower I know that won’t get eaten by deer. Next month there’s a fair bit of Teucrium, Linaria, and Verbena to bloom, but those make a lot of little flowers. For this garden, I like seeing the fist-sized purple flowers.

Below is the view of the garden from the other direction, starting with google earth’s view of the lawn, then the space after the lawn was dug out, with the vetch growing, and how it looks this spring.

As I said, I was worried that the vetch would reseed and make a mess the next year, so we removed the vetch bfeore it could set seed, and we also spread corn gluten seed inhibitor throughout the planting as well. I don’t know if the corn gluten made an impact or not. I use it sometimes but have never had a control group to compare and decide if it is actually effective.

As part of the new planting, we made a path and a seating area, the client had some chairs that we put around a boulder with a sawed off top. The photo above is the view from one of those chairs. So much nicer than a tired old lawn.

Unsurprisingly, we’re doing a lot of lawn-to-garden projects this year. We usually do a couple per year, but we’ve already done two so far, with several others scheduled. Most of them are primarily plant focused, but this one was more hardscape oriented. The clients actively used their lawn, unlike so many people who only walk on their lawn to mow it, so we had to replace it with something the kids could walk and play on.

It was a little strange how the grass made a lip over the edge of the front walk. Alameda’s soil is basically beach sand, so I have a feeling that the soil had drifted onto the walkway like a sand dune and then the crabgrass crept out to stabilize it. It was pretty tired-looking by the time we took it out.

The grass on this side of the entry was more of a path than a lawn, so we could use more plants. The wooden edging is unfortunately necessary to keep the dogs from kicking the mulch onto the pathway, but we should be able to take it out after the grass has been suppressed and the plants grow in. I like doing veggie beds; I leave behind an empty new bed and then come back later to find it filled with edibles and flowers.