It is important to clean out the bee house when the bees are not in the pupa stage of development. While the bee is in the pupa stage it is white and sticky. Handling the cocoons while the bees are sticky can result in a deformed bee. Wings or legs may get stuck to the body and the bee won’t be able to move normally.
Mason bees and other spring time bees should be fully developed waiting to hibernate for the winter by mid September. If you are curious what developmental stage the bees are in it’s always fun opening up a cocoon (just be sure to choose a smaller cocoon because they are usually male and less valuable).
Alfalfa leafcutter bees (summer time bees) will be in the larvae stage and won’t be damaged during clean out in the fall.
Cleaning out the bee house can get a little bit dusty so you may want to set up a table in the garage. Flash light (optional) see step 3 to find out why.
Look for a mud plug or leaf plug at the front end of the tubes. Remove the filled tubes from the bee house and set aside for cleaning. If you spot the tubes the bees originally released from remove them as well (they usually have a small hole with old mud or leaf remains). Before discarding them split them open to check for new cocoons. Sometimes the females reuse tubes and we wouldn’t want to throw any viable cocoons out.
A head light can come in handy when sorting the tubes into used vs. unused piles. Sometimes a female will lay one or two cocoons in the back of a tube that are tricky to spot.
Female solitary bees usually leave a little empty space between their last egg cell and the outer plug. This space prevents us from damaging cocoons with the razor blade. Insert the razor blade into the plug and twist your wrist to split the reed tube open.
It is up to you whether you want to split open all of the tubes (suggested) or just split open 20% or so as a sample. If your sample has relatively low numbers of bee pests then it will probably be okay to leave the rest of the cocoons in the reed tubes. However, if your sample has a lot of pests it is best to open up all the tubes.
What you might find:
Bee safes are not necessary but they have a few advantages. The main one being they prevent the bee cocoons from drying out in the fridge. If the bee cocoons dry out the bees may die. The average fridge humidity is 20-30% but the ideal moisture for cocoons is 60-70% humidity. In the bee safe there is a foam pad that sits below the cocoons that can be moistened periodically to increase humidity in the bee safe. If you don’t have a bee safe you can purchase one here, or you can use another type of container, just be sure there are breathing holes in it. All varieties of tunnel nesting solitary bees can be stored together in the same bee safe.
Pollen can be stored in any container with a lid. Store at room temp or in the fridge.
Discard the mud/leaf plugs, pests, and used reed tubes.
Safely store your bees inside your new Bee Safe.
Comes with absorbent pad and separator.
Count up the number of cocoons you harvested. We recommend having an empty tube for every cocoon released. If you need more reed tubes for next season you can get them here.
How did your bees do? If you feel like you have extra cocoons check out our bee buy back program here to get store credit for your bees.
If you feel your bees could have done better lets talk about a few things that might have gone wrong here.
Make sure there is a little moisture in the bottom of the bee safe. The cocoons should not be submerged though so be careful. Then place the bee safe in the fridge. The bees will be in hibernating heaven. Check the bee safe monthly to ensure there is still moisture and to inspect for mold.
If you notice any mold growing on the cocoons just rinse the mold off the cocoons and containers with a bleach solution (click here for instructions), pat dry and place them back in the fridge. Mold spores can come from the other foods in the fridge like cheese or broccoli and are not a problem once removed from the cocoons.
Alternative storage method: Bees can be stored outdoors but the downside to this method is bees may emerge prematurely. If the bees emerge too early there is risk of them freezing to death with a frost.
Put new reed tubes in your bee house and set it somewhere for the winter. In the basement, a shed or garage is suitable.
50 Reeds Large
Large Reeds about 5/16 inch in diameter, 6 inches long
Use for Mason Bees, Sunflower Bees, Osmia Texana, and Osmia Californica.
This might be the hardest part :). Especially if your winters are as cold and snowy as ours!
Be sure to sign up for our news letter and follow us on facebook. We will let you know when it’s time to get your bee house out again.