by Larry Hodgson November 29, 2017 5 Gardening Houseplants Laidback Gardener Tip of the Day Pesticides Caffeine: A Powerful Organic Insecticide Did you know that caffeine is an insecticide? Moreover, that the coffee plant (Coffea arabica and others) produces it inContinue Reading Share this:TwitterFacebookLinkedInPinterestLike this:Like Loading...