Mason Bee Cleaning

November 01, 2018 1 Comment

Mason Bee Cleaning

Thank you to our renters!
We had a lot of mason bees to clean this fall. We are committed to cleaning each bee cocoon raised through our program in order to promote healthy mason bee populations and eliminate predators. See below for pictures of the cleaning process.
Look out for an email from us over the next few weeks letting you know when you can place rental reservations for 2019. 
The bee blocks have been in this temperature-controlled room for the summer. 
We do this to protect them from the parasitic mono wasp that emerges in late June. If the bee blocks are not protected, the mono wasp will burrow in the holes and lay it's eggs on the developing mason bee. The mono wasp larvae will predate the developing mason bees. 

How important is it to bring the bees inside?

 

 

 

 

 

Here is a photo of a nesting block that was not returned on time and left out in a backyard all summer. Predators have killed almost all of the developing mason bees inside. 

More on mason bee predators here. 

 

 

 

 

 

 

Once the bees are fully formed in cocoons, it is time to take them out of the nesting blocks to clean them. We use a machine that extracts the bees from the nesting blocks and deposits them into a bucket so they can be sifted. We also have tools that we can use to manually scrap the bees out of the blocks. They are very sturdy! 

 

    

As you can see, there is a lot more in the blocks than just bee cocoons. 

After the bees have been sifted, it is time for a wash! The cocoons are waterproof so we soak them in a bleach/water bath for ten minutes before putting them on racks and washing them with the garden hose. We do this to remove the mud plugs, pollen mites, and chalkbrood fungus.

   

After the wash, the bees are then put in our drying tower overnight and sorted the next day. We put them on a light board and any cocoon that allows light to shine all the way through does not contain a viable bee (bottom left photo). This process is much like candling a chicken egg. The final step is to count and weigh each batch of bees. 

  

  

 

 

 Finally the clean bees are put into a walk-in refrigerator to hibernate for the winter season. 
These are the bees that were grown in your backyards this spring and will be put back into the rental program next year or end up as pollinators on one of the local farms we work with. Every renter has an impact on our food system and you are helping us change the agricultural industry one bee at a time! 

 

 

 





1 Response

Eric Wicklund
Eric Wicklund

January 14, 2019

Howdy neighbor! I am happy to learn that mason bees are raised just west of me maybe a quarter mile. (I live up on the hill to your east on 61st Ave SE). I have had trouble getting my cherry trees pollinated in the early spring and thought these might do the job? I’m sure all of the gardens around me here would benefit anyway. Please let me know when I should order (rent… what a good idea!) some bees and a nest. Could I come by there and pick up the stuff when the time comes?
Eric Wicklund…
4254784334

Leave a comment

Comments will be approved before showing up.


Also in News

Rent mason bees in the news
Rent mason bees in the news

May 14, 2019

Featured KIRO radio interview on our Rent Mason Bees program. If you’d like to help bolster bee populations you can do it in your own backyard with Rent Mason Bees.

View full article →

What’s happening with mason bee research in Seattle?
What’s happening with mason bee research in Seattle?

March 13, 2019 2 Comments

We know that mason bees can help pollinate our fruit trees and berry bushes, but what do they really like to eat? University of Washington Ph.D. student Lila Westreich spends her time in Seattle’s parks each spring trying to answer this question and more about the blue orchard mason bee.

View full article →

The honey bee decline and how you can help
The honey bee decline and how you can help

January 31, 2019

Honey bee keepers are reporting an average loss of 30-60% of their honey bees hives this year. When honey bees are stressed from overuse and high loads of varroa mites they are often unable to survive the winter. 

View full article →