Perennial Peanut Groundcover - Knowledgebase Question

Jacksonville, Fl
Avatar for awhiting2000
Question by awhiting2000
September 23, 2009
In Jacksonville FL we have planted perennial peanut and love it --but how do we stop it from aggresively invading adjacent mulched flower gardens? How deep do the roots and rhyzomes go? How deep must barriers be sunk down to contain spreading? What are the best barriers to use?

Answer from NGA
September 23, 2009
Perennial peanut is a terrific groundcover! It spreads by rhizomes (modified underground stems) that concentrate in a 1.5- to 3-inch-thick mat just below the soil surface. Containing it shouldn't be too difficult. You can slice down through it where you want it to stop and then easily pull out the offenders, roots and all. A simple plastic or metal lawn edging barrier will keep it from encroaching your flower beds. Most barriers are 4-5 inches high. Drive the edging down 3" into the soil and that should stop the underground growth. Best wishes with your landscape.

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