2021 Guardian Upgrade Kit

*** PLEASE NOTE: Sales of 2021 Guardian Kits/Upgrade Kits are currently paused while we prepare for this year's cocoon delivery. Our last remaining Kits will be available to purchase from 21st March 2021. ***


If you already own some solitary bee nesting equipment and you're just looking for the buzz of releasing your own cocoons into the wild this Spring, our Guardian Upgrade Kit is the perfect option for you!


 Each Upgrade Kit includes:

  • 1 x Cocoon Release Box
  • 1 x Cocoon Storage Tub & Breathable Lid
  • 1 x Cocoon Starter Stock * Approx. 40 Red Mason bees, (O. bicornis).
  • 2 x 'Seasoned' Nesting Tubes *
  • Access to 2021 Guardian perks, including:
    • FREE occupied equipment returns and exchange service
    • Exclusive Discounts
    • Guardian Newsletters


* Red Mason Bee cocoons & Seasoned Nesting Tubes dispatched seperately, in March 2021.


Important Shipping Information:

We only dispatch our Mason bee cocoons once a year, so your Upgrade Kit will arrive in two separate deliveries....

  • The first package containing the Release Box will be dispatched at the time of purchase.
  • The second, containing the stock of Red Mason cocoons and Seasoned Tubes, will be dispatched in Spring, when the bees are almost ready to be released outdoors.


Easy-to-follow instructions are provided with the equipment and your first 'Guardian's Guardian' Newsletter will also be sent by email before the season begins. With our help. you'll be a solitary bee expert by the time your cocoons arrive!


Further information about Red Mason bees and our cocoon-sharing project can be found on the Guardian page. Terms and conditions apply.

2021 Guardian Upgrade Kit


    Please visit our Bee Guardian page for more information.


    No problem! Use the 'Comments/Notes' form in your shopping basket to include a free gift message with your purchase.

    You can also use the 'Comments/Notes' form to provide us with additional information relevant to the order, such as a delivery date request, or the contact details of a Guardian Kit gift recipient.

MasonBees Ltd.

5 Melrose Drive, Shrewsbury,

Shropshire, SY2 6QS, 



Est. 2011 |  Registered in England: 9859472