My friend, Paula, lives in the country in middle-America, and is a long-time dog show breeder and trainer. One of her friends told her about these plants, and at first she dismissed it, but then when her friend gave her starts of the plants, what did she have to lose? Turns out that the plants with built-in insect repellants provide an excellent barrier for your home, as well. Once she planted these around the perimeter of her property, she hasn't had any more problems with fleas. And, she points out, that if you plant especially the mints where the dogs can roll in them, then they will self-treat when necessary!
Here are some of the plants she recommends:
all types of mint (lemon, chocolate, apple, peppermint, catnip)
Botanical info on different varieties
Bergamot (bee balm):
how to propogate
The fleas have become progressively worse the past 3 years and this year I had to break down and use chemicals on the lawn. So I'm clearing out some areas to plant some of these plants next year and I can't wait to see how well they do!