Build a Mason Bee House

Parent Supervision Recommended. 

1. On the widest side of your wood block, draw 1-inch intervals in a grid. 

2. Mark your drill bit 3 1/2 inches from the bottom and then drill holes at each intersection. 

3. Use sandpaper to smooth out the holes. 

4. Hang on a fence or tree roughly 3-6 inches from the ground. Sheltered from the wind and facing south. 

Directions from Bea Johnson’s Zero Waste Home book.