Any home gardener can create an attractive landscape without filling the entire lawn with lush turf and plants. Having said that, you can achieve a lush lawn with low-water plantings. Add some hardscaping, or built and paved areas, and you’ve got interest and function, a palette for the plants’ colors and textures.
But here’s the rub – and this month’s rant about people who take xeriscaping to the extreme – hardscaping does not mean that you tear out every living blade of grass, and kill (intentionally or unintentionally) every root of every living plant in your yard. In other words, don’t replace the entire landscape with pavement and rocks. In the end, you and your house will be hot, and the only roots that will survive – somehow – will be those of annoying weeds.
You can use rocks quite effectively in a xeric landscape, along with other natural elements. I use the term “natural hardscaping” because if you use found elements from nature, you spend less money and maintain the sort of natural look that many xeric landscapes feature so well. In other words, store-bought pavers have their place, as do concrete and gravel. But I believe they have limited, specific uses, and it’s more fun to add some found elements, such as interesting rocks to your garden.
You don’t have to water rocks, and they can fill or delineate spaces or offset and draw attention to xeric plants. Other great found objects are pieces of wood from old trees (or driftwood), seashells and old metal objects or collectibles that can weather the outdoors. From a practical standpoint, you can use rocks to help well or shore up areas to control drainage, which is a great xeriscaping strategy.
Here are a few tips for using natural hardscaping to complement your xeric garden:
- Rounded plants can soften the edges of hardscape materials, such as patio corners or steps. And shorter, round rocks look great behind tall, straight grasses, for instance.
- Pea gravel is a great hardscaping element. It’s easier to walk on than larger rock gravel and can serve as mulch for plants that need little water and plenty of heat. You probably want to lay some landscape fabric under the pea gravel and be sure to layer it on thickly to prevent weeds, though.
- Use your creativity, adding hardscape elements to make or line paths, for example. You might find rocks or leftover flagstone pieces large enough to bury for stepping stones. Tim placed a large, nearly flat rock under our faucet as a sort of foundation and splash guard.
- After making any change that replaces turf or plants with hardscaping, be sure to modify drainage and sprinkler systems to avoid wasting water.
- Although wood can work well in the garden, it can sometimes rot or invite pests, such as carpenter ants. So try to use it where it can stay relatively dry or off the ground. Treated wood, such as old railroad ties, fares better.
- Rock gardens look best when they appear as rocks might in nature. Burying a large rock a few inches down, and even slightly askew, looks much better than just setting it on top of the ground. Just like with plant selections, mix up rock colors, textures and sizes.