Spring Inserts for Mason Bees - 8mm

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  • Inserts with box
  • Chalet Bee House w/ BeeTubes + Inserts and Bee Wayfinders - Lifestyle
  • Inserts right angle view
  • Bulk inserts
  • Inserts front view
Frequently bought together:


Spring Inserts for Mason Bees - 8mm. Place inserts inside drilled blocks of wood or Cardboard BeeTubes. Inserts protect developing mason bee larvae from parasitic wasps and other pests.

Lifestyle photos may not accurately depict what is included with this product. Please make sure to read the specifications below. 


  • Spiral wound glacine paper insert: Outside diameter - 8mm, inside diameter - 7mm, length - 6"
  • 60 count
  • 250 count

Product Features

  • Inserts easily fit within our 8mm BeeTubes. 
  • Combined thickness of both BeeTubes and Inserts stop the majority of parasitic wasp attacks.
  • To harvest cocoons in the fall, remove inserts and drop them into a bath of lukewarm water. Within 10 minutes the glue dissolves and the paper and cocoons are easily separated. Learn more about harvesting mason bees here.
  • For DIY Bee Houses, ensure roof is a minimum of 3” longer than BeeTubes & Inserts.
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3 Reviews

  • 1
    spring inserts

    Posted by Robyn Kruppa on Jun 27th 2022

    Our mason bees would not use these inserts. They filled almost all the other tubes, cardboard and reed, but not even one of the white inserts. Will not buy again. ***Crown Bees Response*** We're sorry to hear this, Robyn. We've received thousands of filled inserts from our Bee Buy Back Program participants across the country, so they work well for many bee raisers. It looks like your mason bees preferred the cardboard and natural reeds over the paper tubes — a fun experiment with various products to see what works best in your yard and garden!

  • 5
    Spring Inserts for Mason Bees

    Posted by Carolyn L Winters on Mar 7th 2022

    Just love these inserts! Makes setting out the nesting tubes in the spring so easy and then, in the fall, easy to pull out and harvest the cocoons. Thank you Crown Bees for providing such great products and information to support these wonderful, gentle bees!

  • 5
    spring inserts for mason bees

    Posted by Sally White on Mar 3rd 2022

    WOW - super product and got the day after I ordered! Can't beat that!

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