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How To Help Mason Bees Thrive And Survive

Help Our Mason Bees Thrive And Survive
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Mason bees are “solitary bees,” meaning that unlike honey bees, they do not form a massive colony. These hard-working native pollinators emerge from their cocoons in the spring and begin the process of nesting in specialized tubes. In each tube, a female mason bee might lay as many as six or seven eggs, and she’ll provide a food source (a big ball of pollen and nectar) for each egg. The eggs and food stores are each separated into their own cell, and then the tube itself is capped with a little bit of clay— hence the name “Mason” bee.

Mason bees are active as pollinators earlier in the season than many other species of bees. The male bees emerge first and begin foraging for food in the form of pollen and nectar from flowers. Gradually, the female bees emerge and right away they begin to look for suitable nesting spots. They prefer a nesting tube of a specific depth, with an opening of a specific diameter. Too big, or too small, will not do. Once the nesting site is chosen, the female bee releases a pheromone to attract male bees, they mate, she begins to lay eggs and gathers food supplies for her offspring. By the end of June, her work is done, the nest is full, and the adult bees die off.

What to do when you get home with your bees
Keep your container of bees closed until they are ready to be released. You can keep your bees from dehydrating in the refrigerator by storing them in their box in an airtight container with a damp paper towel. Bees should avoid direct contact with the paper towel. They can be kept this way for the winter.

When selecting your nesting site, choose a sunny location that receives morning light. Position the nest on a broad surface such as the side of a house, garage or fence, as long as it faces east or south and is in full sun. Placing it at eye level will give you the chance to view their activity easily.

In early March consider bringing out your bees. If using your bees to pollinate an orchard wait until about 25% of the trees are in bloom. Otherwise, check for other flowering plants in and around your garden. The bees will be visiting as many as 17 blooms a minute within a 100-meter radius. The ideal conditions for releasing the bees are on a warm windless day with lots of spring flowering plants in bloom in your garden. It is a good idea not to wait too long to put your bees out. Even if conditions are cold and unfriendly the bees will emerge when they are ready.
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Cocoons ship with a freezer pack in the box to keep the bees cool and prevent them from hatching.

Your box of bees can now be placed outside next to the nest. It’s important to keep the box out of the rain and avoid direct sunlight. You can make an exit hatch for the bees by opening one end of the box.

In as little as half an hour, the male bees will be warm enough to begin emergence. They may wander from your garden but not far. Over the next few days or even weeks, the females come out of diapause and begin nesting.

Releasing The Mason Bees

In March, on a warm, relatively calm day, mount your clean mason bee nesting box on a south or east-facing wall where it will receive morning sunshine. The cocoons can be taken out of the refrigerator and placed on or near the nesting box.

Key Mason Bee Dates: From early March to April, Release the cocoons. From late June to early July, Take nesting box indoors. Late September to November, Wash and store cocoons.
Your job as a Mason Beekeeper

As mason bee keepers, we can take a couple of simple steps to give the young bees a better chance of making through to the next season. The first step is to bring the mason bee house indoors in July, once the nesting phase is complete. It can be stored any place out of harm’s way, with the entry holes facing up (ie, a mason bee house resting on its “back”). This ensures that the larval bees will be in contact with their food supply. The next step we can take is to wash the cocoons and store them safely over winter.


Mason bees have the ability to fly in our weather conditions and at lower temperatures than other bees. They are relatively easy to stage and care for. Native throughout the continental USA and southern Canada, Blue Orchard Mason Bees are super-efficient, hard-working, spring crop pollinators: They collect nectar and pollen at the same time by lighting on the flower, taking nectar by tongue and collecting pollen using their rear and middle legs. A single female mason bee will visit nearly 2,000 blossoms a day and a smaller home orchard can be adequately pollinated by 40 - 50 bees. Ten Mason bees will pollinate thousands of blossoms making them important for home garden pollination.

 There are over 25,000 species of bees world-wide Canada has over 850 bee species that have been identified BC has more than 450 species of bees, more species of bees than there are species of song birds in all of Canada!

Mason bees are solitary but gregarious bees. Most bee species are solitary, that means they do not have a queen bee or workers or live in a large nest. Each solitary female is capable of mating and laying viable eggs. She has no helpers.

Mason bees though are gregarious meaning although they do not cooperate at all they like hanging out with each other. When one female chooses a nesting site that encourages other mason bees to nest nearby. That’s why the kind of nests West Coast Seeds sells work so well, they allow many individual female Mason bees to live in the same spot.

Why are Mason Bees important?


Although bees and flowering plants seem to have a special relationship, most flowering plants rely on bees for pollination, not all plants need the same pollinator and not every pollinator is able to pollinate all plants. For botanical diversity, we need pollinator diversity and for a sustainable and livable world, we need them all.

Mason bees are important because they are reliable pollinators of many kinds of hard and soft fruits in Canada. We need them for food and because they are easy to manage and maintain. Keeping Mason bees in your backyard is important too, to gain an understanding and appreciation for how amazing insects are and how they help us without asking for anything in return except to be treated with respect and dignity.

Being solitary, Mason bees are unlikely to sting. Most bee species are able to sting but most are very reluctant to do so. Their defensive plan is to fly away. Introducing children to Mason bees is a great way to grow your kids into caretakers of the earth. We handle the cocoons, not live adults, so the risk of getting stung is about zero.

Are you ready to support our Mason Bees? Start here:
Mason bee cocoons can also be bought and placed inside or near the Starter Cottage. In the fall, the bee cocoons are removed from the tubes for annual cleaning and storage. Easy to mount and great for kids.
These cardboard nesting tubes are attractive to mason bees and are an inexpensive way of getting started. The 35 tubes are closed at one end to provide the ideal mason bee nesting conditions.
By opening up your Mason bee nest or condo you can remove the dead and diseased bees to help the remaining healthy ones survive. We pull out the cocoons using a special tool designed to make this task easier for you and safer for the bees.
Hang this ball of specially selected Mason Bee Mud clay near your mason bee nest to provide female bees with the material they use to separate and seal in egg cells.
Plant wildflowers for Mason Bees
Bee Garden Blend

Bees and flowering plants evolved together millions of years ago. We could not have one without the other. Although bees face many challenges in this age of global weather change; at West Coast Seeds we believe that the simple act of sowing the seeds of plants that bees and other pollinators love to forage on is a critically important step in helping to ensure they; the whole planet; and we have a future. The Bee Garden Blend wildflower seeds are specially blended by our Certified Bee Master for use in managed landscapes such as disused laneways; verges; or along the edges of cultivated areas in residential or agricultural properties.

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