The Q&A Archives: Plants for Slope

Question: We just built a retaining wall and now have a large sloping area behind it that we need to landscape. It is a very large area and we are trying to do it as inexpensively as possible. We don't have any requirements really. We're open to all ideas. The area gets a lot of sun and a lot of water that comes down off of a mountain. It's a very large area. It's about 180 feet long by I'd say about 7 feet deep. One thing we would like is something that would grow down over the wall. Preferably something that flowers. Also, I'd like a lot of things that are going to stay green in the winter and I don't want any annuals. Any advice you could give would really be appreciated.


Answer: To be honest I can't think of any one plant that would do all those things. Low growing juniper shrubs are probably the least expensive alternative in the long run as each plant will cover a considerable square footage. The ground hugging types will also cascade a bit as they reach the edge, and they are of course evergreens. Unfortunately, they don't flower. Unfortunately, although perennials will bloom they are not for the most part evergreen, and to cover such a large area would require a huge number of plants.

You might try intermixing junipers and some tough perennials such as daylilies, black-eyed Susans, purple cone flowers, and spring bulbs to add the color you want. Good luck with your project!

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