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Mason Bees are Belly Floppers & Pollinate 95% of the Flowers They Land On

You may have seen a mason bee and thought it was a fly. Or heard the word mason bee and thought that they sting. Let’s learn a little more about these amazing pollinators who are helping our ecosystem, working to help honey bees and helping farmers produce more food all over the world.

WHAT IS A MASON BEE? Mason bees are also called a blue orchard mason bee because of their blue iridescent sheen. They are native to North America and are solitary bees, which means they don’t live in a hive, don’t have a queen bee, and all the females are able to lay eggs.

WHY ARE THEY IMPORTANT TO THE ECOSYSTEM? Mason bees are not picky pollinators, they will collect pollen and nectar from just about any plant that’s blooming in the early spring. That means not only do mason bees help us grow more food, but they pollinate our native plants too. That makes it so the plants around us are healthier, can grow larger, and can better filter our air and water, boosting the overall health of our ecosystems.

HOW DO THEY HELP FARMERS MAKE MORE FOOD? Farmers use 1,000 mason bees per acre to pollinate their crops. We need to continue to grow our mason bee population so that they can work with more farmers. By providing another bee to help pollinate our orchards, honey bees are less stressed and farmers can boost their yields.


1) BELLY FLOPPERS – Mason bees belly flop onto the flower, which gets pollen all over their body. Whereas, a honey bee collects pollen on their back legs. This enables mason bees to pollinate 95% of the flowers they land on vs. 5% for the honey bees.

2) HOLES VS. HIVES – Honey bees work in a hive that produces honey and the queen lays eggs. Mason bees lay eggs in small tunnels or holes and don’t produce any honey.

3) WHO’S THE QUEEN – Honey bees have one queen that lays all the eggs. Mason bees are solitary bees, all females lay eggs and they work alone.

4) BABY BEES – Mason bees lay eggs that then turn into cocoons and hatch the next Spring. Honey bees lay eggs that develop into bees inside the hive.

HOW MASON BEES HELP HONEY BEES – Honey bees are overworked in the pursuit of keeping up with our high demands for food. By using more mason bees on our farms, we can lessen the stress on the honey bee populations and utilize the amazing hardiness of the mason bee to keep our grocery stores stocked with fruit.

HOW CAN YOU GET INVOLVED? Anyone can host mason bees and mason bees especially thrive in gardens. Bothell based, Rent Mason Bees, is the only company in the country who has a mason bee program where you “host” mason bees and not have to worry about cleaning or harvesting your cocoons at the end of the season. You can order your kit online and have it mailed right to your home. After your kit arrives:

  1. Hang your mason bee house in a sunny morning location.
  2. Place nesting block into the house.
  3. Remove tape from tube that holds 50-60 cocoons and set on top of the nesting block.

That’s it! When the weather warms up to about 50 degrees your bees will start to emerge from the tube. They will mark it with a scent so they know where to come back. Then, they will get to work pollinating trees and flowers and will lay 5-7 eggs in each hole.

In September, you’ll get a reminder to mail your nesting block full of “baby bees” back to Rent Mason Bees using your box and pre-paid shipping label. They will clean the cocoons and safely store them in hibernation over the winter. Then, the next Spring, healthy mason bee cocoons are sent to farmers all over the West Coast to pollinate crops such as apple, blueberry, pear, cherry and almond.

HOW YOU’RE MAKING A DIFFERENCE – When you host, you help pollinate gardens, put healthy bees back into the ecosystem and help farmers produce more food.

If you are planning on having mason and leafcutter bees this year, please consider renting from us. We provide mason and leafcutter bee kits to pollinate your yard during spring and summer months. We take all the work out of fall harvest and cleaning of mason bee cocoons and do all of that for you.

Thank you for supporting our family run business and loving bees!

Reader Interactions


  1. Laura James says

    For the last few years, I have wanted to get started with some Mason Bees. This year I’m planning more planting areas in addition to really getting my greenhouse going. These little guys will be a perfect addition.

    • Stacy says

      I would love to have my own bees, unfortunately the people around here use Roundup. I don’t want them to get sick and die. 😔

      • Thyra McKelvie says

        Oh no… that’s so sad. We’re currently working on a blog to teach people about the benefits of dandelions and the importance of not using week killer. Stay tuned to our blogs to see it when we post it.

    • Thyra McKelvie says

      Hi Laura, Thanks for your comment and messages to us. They’re very easy to host and you’ll love how they help your garden grow!! We’re excited about you being a host. Let us know if you have any questions.

  2. Jennifer says

    I am a Girl Scout leader and I am known as the bee lover.I teach the girls the importance of bees and planting bee friendly flowers and plants.I do love everything about bees.Would love to have Mason bees on my property.

    • Thyra McKelvie says

      Hi Jennifer,
      I was a girl scout growing up too!! I love how you’re teaching them about bees. Since solitary bees are so friendly and don’t sting, you can actually see them belly flopping on your flowers. We created a whole series of free printable worksheets and mason bee journals for kids to learn more about bees. You can visit our Backyard Scientist page here and use these to teach your troop. Thank you for supporting solitary bees!!

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Bee Amazed

Mason bees
visit up to
flowers a day
400 Mason bees
do the work of
honey bees
One Mason bee
block can hold
bees per acre
to pollinate their