Hosting Mason Bees in Maine

Hosting Mason Bees in Maine

Mason bees are excellent pollinators and relatively easy to attract and care for. Follow this guide to successfully host them in Maine.

Attracting Mason Bees

Provide Food Sources

Plant early-blooming flowers such as willows, crocuses, dandelions, and fruit trees to ensure a steady supply of nectar and pollen.

Ensure a Water Source

Place a shallow dish filled with water and pebbles to provide safe drinking access.

Supply Mud for Nesting

Mason bees use mud to seal their nesting tubes. Provide a damp, clay-like soil source nearby to support their needs.

Building a Mason Bee Habitat

Choose the Right Bee House

Use a wooden Hemlock box with holes (5/16” in diameter) or a bundle of hollow tubes (such as bamboo or paper straws).
Avoid plastic tubes and painted wood; natural materials are best.
Ensure the house is situated in a sheltered, sunny location facing east or southeast.
Include a small overhanging roof to protect the nesting site from rain.

Hosting Mason Bees

Best Timing

Mason bees emerge in early spring when temperatures reach approximately 50°F (10°C). In Maine, this is usually around April.

Introducing Bee Cocoons

If purchasing mason bees, release their cocoons near the nesting site when temperatures are suitable.

Nesting Blocks

Provide replaceable nesting materials to maintain a healthy environment for the bees.

Caring for Mason Bees in Maine

Winter Storage

In late fall, check to make sure the habitat is in a location protected from severe weather, or collect bee cocoons and store them in a breathable container inside a refrigerator (33–39°F).
Release the bees in spring when flowers begin to bloom.

Pest Management