In May, I replace a row of nesting blocks in the Cherry Creek Pollinator Habitat solitary bee house. I checked the blocks the end of July to look for nesting activity. The leaf cutter bees have been very active! Leafcutter bees will snip discs of leaf material, about a quarter inch, from ash trees or roses. They take the leaf discs and fold them to construct small tube shaped nests inside pieces of wood or holes in trees. Inside of each cell an egg is placed with some pollen.
To make a solitary bee house, read this NebGuide ‘Creating a Solitary Bee House’: https://extensionpublications.unl.edu/assets/pdf/g2256.pdf
To learn more about leaf cutter bees, visit this site: https://byf.unl.edu/topics/leaf-cutter-bees
MJ Frogge
The Buzz at Cherry Creek 