Sheila Colla

Northern Gardener's Guide to Native Plants and Pollinators

2023

Garden for the Rusty-Patched B

Garden for the Rusty-Patched Bumblebee

2022

Bumblebees of North America

Bumblebees of North America

2016

Guide to bumble bees of the ea

Guide to bumble bees of the eastern United States

2011