Bumblebees are unique and important pollinators and play a crucial role in the pollination of crops and many wildflowers.
Bumble Bee Resources
Why Pollinators are Important for Your Garden
Ask the Master Gardener: Inviting bees to your garden — The best of the pollinators, Home And Garden
How to invite bees into your garden — Stone Pier Press
Why do we need bees? Friends of the Earth
Bumblebees! : The Early Spring Garden – A Wild Garden
All about Pollination - Bumblebees and Flies for Horticulture and Agriculture
Wild Georgia: Take time to count bees, flies and other pollinators
Cornell Cooperative Extension