Mason bees are gentle, solitary bees that are highly effective pollinators for fruit trees and gardens. Unlike honey bees, they do not live in hives or make honey.

Are mason bees better pollinators than honey bees?

For home gardens and orchards, mason bees are often far more efficient than honey bees because they carry pollen loosely on their bodies and pollinate more flowers per visit.

Mason bees are gentle bees and rarely sting. Because they do not defend a hive, stings are extremely uncommon.

Are mason bees safe around kids and pets?

Yes. Mason bees are calm, non-aggressive, and widely considered safe around children and pets.

What plants do mason bees pollinate best?

Mason bees excel at pollinating apples, cherries, pears, plums, blueberries, and other early-blooming plants.

When should I buy mason bees?

Mason bees should be purchased before early spring bloom in your region to ensure proper timing and availability.

Is it hard to raise mason bees?

No. Mason bees are easy to raise and require very little time, equipment, or ongoing maintenance.

Do mason bees come back every year?

Yes. With proper nesting and basic care, mason bees can reproduce and return year after year.

Do I need to buy mason bees every year?

Not necessarily. Many gardeners develop a self-sustaining population over time.

Can mason bees damage my house?

No. Mason bees do not chew wood or damage structures. They only nest in pre-made tunnels.

Are mason bees good for small or urban gardens?

Yes. Mason bees thrive in small spaces and are ideal for urban and backyard gardens.

Why buy mason bees from Crown Bees?

Crown Bees provides region-specific bees, responsibly designed nesting systems, and expert educational support.

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Mason Bees

Leafcutter Bees

Wild Bees

Garden Prep

About

Your Guide to Incubating Leafcutter Bees for Successful Pollination

Leafcutter bees hibernate as dormant, mature larvae inside their leafy cocoons. Their development from larva to adult is driven by temperature and humidity — warmer conditions speed up development. This entire process is called incubation.

If you purchase Leafcutter bee cocoons from Crown Bees, we begin warming them for you so they arrive ready to emerge. Learn more here: Picking Your Leafcutter Bee Ship Date and Leafcutter Bees by Mail.

If you harvested cocoons yourself, plan for their emergence to align with warm summer weather and open blooms.

Need reminders timed to your region? Sign up for BeeMail for seasonal tips right when you need them.

Looking for an Easier Incubation Setup?

Our Leafcutter Bee Incubation Kit maintains ideal warmth and humidity with minimal guesswork, giving your bees the best possible start to the season.

Incubating Leafcutter bees can be slightly tricky. They require both heat and humidity — heat alone can dry them out. Their leafy cocoons are not waterproof, so never soak or mist them. But too little airflow can allow mold to develop.

How to Incubate

Place your harvested cocoons in a container that holds 60 to 70% humidity in a warm area such as an unheated garage, water-heater room, or sheltered outdoor space.

Add a damp (not dripping) sponge and crack the lid slightly for airflow. Monitor conditions daily with a humidity gauge.

Development Timing

84°F / 30°C → emergence in ~20 days
70°F / 21°C → emergence in ~42 days

Pro Tip: Leafcutter cocoons cannot regulate internal heat above 90°F / 32°C. If your incubation area exceeds this temp, move cocoons to a cooler spot and release adults as they emerge.

Some native Leafcutter species develop more quickly. Check your container every few days during warm periods. Release early emergers near your bee house to keep them local.

Releasing Adult Bees

When adults begin emerging, place cocoons into a hatchery and set it inside your bee house. Choose from:

Cocoon Hatchery Tube — compact & easy
Chalet or Tower Hatchery — larger capacity

Watch for Parasitic Wasps

Important: Pteromalus parasitic wasps emerge in about 9 to 14 days and attack developing Leafcutter bees. Check the container often and kill any wasps you find.

Need More Leaf Options?

Pea Plant for Leafcutter Bee Nesting Material

Female Leafcutter bees cut small circles from soft, flexible leaves to build their leafy cocoons. If your yard doesn’t naturally provide suitable foliage, or you want specific planting suggestions, see our guide:

Providing Leaves for Leafcutter Bees

Pro Tip: Plant peas, beans, or strawberries when you begin incubation as they provide ideal cutting material for Leafcutter bees.