If you know how to attract wasps to the areas you want them, solitary and even social wasps can contribute to your organic pest management system.
You can learn how to attract wasps easily: solitary wasps, which are unlikely to sting, prefer to nest in closed-ended tunnels. You can drill partial holes in logs or bundle sections of bamboo or reeds to provide favorable habitat for these wasps.
Photo by Tess Grasswitz
Learn how to eliminate pests while restoring biodiversity with The Xerces Society's guide to organic pest management, "Farming with Native Beneficial Insects."