Raising Mason Bees Frequently Asked Questions

Here are 15 frequently asked questions about how to raise mason bees:

What flowers attract mason bees the most?

They prefer early-blooming, pollen-rich flowers like fruit trees, dandelions, crocuses, bluebells, and herbs such as lavender, rosemary, and thyme.

Can I raise mason bees in my backyard?

Yes, mason bees are perfect for backyard farming—just provide a nesting box, plant pollinator-friendly flowers, and avoid pesticide use to create a welcoming environment.

Do mason bees need water?

They don’t drink from standing water but benefit from a shallow dish with pebbles or damp soil nearby to help them gather moisture and mud for nesting.

How do I protect mason bees from predators?

Use nesting boxes with narrow entrances, keep them elevated and dry, and cover with mesh to deter birds, wasps, and ants without blocking bee access.

What do mason bee larvae eat?

Each cell contains a mixture of pollen and nectar called “bee bread,” which sustains the larva until it pupates and forms a cocoon inside the nesting tube.

How long do mason bees live?

Adult mason bees typically live for about six weeks, spending most of their short lifespan gathering food and building nests for the next generation.

How do I store mason bee cocoons over winter?

Store them in a ventilated container in a refrigerator at around 35–40°F, protecting them from humidity and pests until spring temperatures rise above 50°F.

Are mason bees social insects?

No, mason bees are solitary—each female builds her own nest independently, though they may nest close together if conditions are favorable.

Can I use mason bees in a greenhouse?

Yes, mason bees are excellent for greenhouse pollination—especially for crops like strawberries and tomatoes—and can be managed effectively in controlled environments.

Do mason bees make honey?

No, mason bees do not produce or store honey; they collect nectar and pollen only to provision their offspring within individual nest cells before laying eggs.

How many mason bees should I start with?

A good beginner setup includes 50–100 cocoons per nesting block, depending on available flowers and space—populations will naturally grow over time with proper care.

What diseases affect mason bees?

Chalkbrood fungus and parasitic mites can be threats—regular cleaning of nesting materials and proper cocoon storage can prevent most issues.

How do I know if my mason bees are thriving?

Check your nesting box regularly—filled tubes sealed with mud indicate successful nesting, while empty holes may mean more flowers or adjustments are needed.

Can I reuse mason bee nesting tubes?

It’s best to replace or clean reusable nesting materials annually to prevent disease buildup and ensure healthy development of future generations.

Why should I raise mason bees?

Raising mason bees supports native pollinators, improves garden productivity, and promotes sustainable agriculture—all while offering an easy, hands-off way to grow more food naturally.

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