University of Minn.  Department of Horticultural Science LED vs. High Pressure Sodium Test Results (2006)

The following graph shows results obtained at the University of Minnesota, Department of Horticultural Science comparing our LED lights and high pressure sodium (HPS) lights. Mean plant height  of Capsicum annuum ‘Hungarian’ and Bellis perennis ‘Monstrosa’was measured over seven weeks grown under LED and HPS HID lamps.