CrownBees
Spring Mason Bee Mud Box
Spring Mason Bee Mud Box
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Mason Bee Mud Box: The Original Mud Architects!
Female mason bees are nature's architects, building nest chambers with clay-rich mud to create individual spaces for each developing baby bee. Each chamber is sealed with a thick mud cap to protect their offspring from predators, ensuring they emerge healthy and ready to pollinate in the spring.
Did you know? Mason bees won't nest unless a reliable source of clay mud is available within 25 sq. ft.!
Why Clay-Mud is Essential:
- Mason bees prefer mud with a high clay content, similar to modeling clay.
- Arid locations, sandy soil, and rooftop gardens often lack the proper moisture levels to keep mud usable for mason bees.
The Mud Box: A Smart Solution with Capillary Action
The Mason Bee Mud Box uses capillary action to ensure that mason bees always have access to perfectly moist mud. Here's how it works:
- Water stored in the Mud Box is wicked up through the black capillary cloth and under the Mason Bee Mud Mix.
- This keeps the clay mud at the ideal moisture level for nesting.
- Depending on weather conditions, the water in the storage bin may last 1–2 weeks before needing a refill.
Includes:
- 1 cup of dried clay (Mason Bee Mud Mix)
- 1 capillary cloth
- 1 Mud Box
- Easy-to-follow instructions for setup
Ensure your mason bees have the perfect nesting environment with our Mason Bee Mud Box—keeping them happy, healthy, and ready to pollinate your garden next spring!

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