Answer: I am not aware of any specific cat-repelling plants. However, I know they do not like to step on thorns. You might have luck using cat repellents (either home made with garlic or commercially formulated) or perhaps spreading thorny clippings around your plants. Gardeners Supply http://gardeners.com/ is offering a cat deterrent consisting of plastic spines, I have not tried it but the idea is similar. Another possibility is to keep the cat indoors.
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