RAISING MASON BEES
PCC Rock Creek Bldg. 4, Room 103 PCC Rock Creek, Building 4 (Greenhouse), Building 4, Northwest Springville Road, Portland, OR, Portland, OregonFREE. Registration NOT required. The second of three presentations on mason bees, focuses on the environmental needs of the mason bees, nesting behaviors of mason bees, nesting, and housing devices...