Drainage problem on swale - Knowledgebase Question

Boca Raton, Fl
Question by lynmariet
March 13, 2010
My St. Augustine grass is too wet(& brown)due to poor drainage on my swale. I dug down 6 inches & it is solid, compacted marl and rock everywhere. What can I do?


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Answer from NGA
March 13, 2010

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Unless you plant to redo the swale and dig through the marl, I think your best option is to choose a groundcover plant that tolerates damp soil. Dichondra carolinensis (Dichondra) is just such a plant so you might consider replacing your St. Augustine with it. Gelsemium sempervirens (Carolina jessamine) makes an attractive groundcover but won't tolerate much foot traffic.

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