Bug Girl has brought to my attention the Xerces Society for Invertebrate Conservation. They provide several free publications that would be of interest to nature loving gardeners across North America:
- Pollinators in Natural Areas: A Primer on Habitat Management
- Nests for Native Bees.
- Butterfly Gardening.
- Plants for Native Bees in the Pacific Northwest
- Plants for Native Bees in California.
- Plants for Native Bees in the Upper Midwest.
- Plants for Native Bees in North America.