Depending on when you received your bees and where you live will determine how long it will take for your leafcutters to emerge. One of the big differences between mason and leafcutter bees is their life cycle. When we send you your bees, leafcutters arrive in their larvae state, whereas, mason bees are fully grown in their cocoons. We send you a leafcutter nesting block with 3 rows of the block full of 100+ leafcutter bees snug in their leaf sleeping bags for safe and easy transport. Since your leafcutters arrive in their larvae state, it usually takes them about 6-8 weeks to grow into a fully developed adult bee and they can only do this when temperatures are a consistent 70+ degrees. Depending on where you live, this usually occurs towards the middle of July through early August. 
Once they emerge, they live for about 4-6 weeks pollinating and laying their eggs. Sometimes you can get two life cycles of leafcutter bees if the temperatures stay consistently hot for the new babies to grow.
So, when the weather warms up, keep an eye open for little bees flying around with tiny pieces of leaves and marvel at their hard work and mastery of making their nests.
WHAT DO LEAFCUTTER BEES LOOK LIKE?
LEARN MORE ABOUT LEAFCUTTER BEES:
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Greetings!
My name is Patrick Brandon. I just subscribed to your channel. I have a small YouTube Channel that deals with gardening (In The Garden With Patrick).
I am doing a video on Leaf Cutter Bees and would like to use some of your footage on YouTube video and even promote your channel / company. I found it interesting that you actually can purchase these types of bees! I just need about 1-2 minutes of video of the leaf cutter bees actually cutting leaves and putting the leaves in the tubes. Your videos are incredible. I have similar houses with tubes, but have never actually seen the bees putting the leaves into the tubes like you show on your video. I would love to give you full credit for sharing the video also.
Let me know if you would be kind enough to share some footage with me or if you would like to donate a bee house that I could use on my video.
Hi Patrick,
Thank you for your comment about our leafcutter bee video and thank you for asking if you can use it. We have a few leafcutter bee videos that you may find interesting.
You’re welcome to use our videos to educate and teach more people. Please tag our website so they can reference more information and can you email me back the YouTube link and we can share it to our group.
Thank you for teaching more people about our incredible little pollinators.