Spring Mason Bees are perfect for fruit and nut trees, berries, and spring-blooming flowers. These super pollinators visit thousands of flowers per day with a pollination rate of 99%! For the health of the bees, we only ship mason bee cocoons on Mondays to ensure they do not get stuck in transit over the weekend. We recommend picking a shipping date that is two weeks ahead of when you expect your spring plants to bloom. Just remember, our last ship date for 2022 is April 25th (U.S. orders only). Once your bees arrive, it's up to you to provide these pollinators with healthy habitats to forage and nest to be successful. It's essential to take the time to learn how to care for your bees if you want to see healthy future generations in your yard. Fortunately, we've got you covered. We love sharing our knowledge and helping our community of bee raisers, so each month, we spend time thoughtfully crafting our BeeMail with seasonal reminders and tips to help you be as successful as possible with our bees and products! If you purchase bees, we strongly encourage you to sign up for our BeeMail! Specifications: Buy One, Get One Free. 2 x 20 mason bee cocoons, 8 female and 12 male cocoons (natural ratio of males to females) Release instructions Features: Mason bees forage in cooler and wet weather A single mason bee can do the work of 100 honey bees! Gentle and easy to raise, making them safe around kids and pets! All cocoons have been harvested and washed to prevent the spread of disease and reduce pests. Spring mason bees are common across North America. When you purchase from us, you receive bees specific to your region to give them the best chance of survival and reduce the spread of disease. NOTE: Although we do all we can to ensure mason bee health, it is natural for some bees to die during hibernation. Make sure to read our Mason Bees by Mail Instructions before your bees arrive at your doorstep! Please avoid using bamboo nesting materials. Mason bees prefer 8mm nesting material.