Rock Wall - Knowledgebase Question

Clive, IA
Avatar for dmrogersis
Question by dmrogersis
March 13, 2001
I have a rock (boulder) wall on the east side of my home. It varies in height from about 4 ft to 1 ft from the house to the driveway. I have little chipmonks that make their home in the cracks and dig out the dirt. I'm looking for a plant that will hold the soil well, that can stand dryness. My home is in a natural type setting with a small creek and wild trees next to it. My landscape next to the house is pretty colorless-with some green and yellow flowering plants and shrubs. Am interested in any suggestions on good erosion control plantings. Back in the 60's, I remember my mother having a yellowish green-succulent looking, plant that only got a couple inches high-thought that it might work well, but haven't been able to find a picture of it.

Answer from NGA
March 13, 2001
Your mother may have grown a smaller variety of sedum, and in fact sedums as a group should do well in that type of location. Another possibility would be the golden flowered perennial Alyssum , the yellow flowered Corydalis lutea, and Lady's Mantle, or Alchemilla mollis. Smaller types of perennial Dianthus and Thyme are other possibilities to consider. These will not necessarily however protect against the chipmunks who tunnel; the tunneling can actually cause structural problems so do be sure to keep an eye on their activity.

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