It has been formulated specifically for the Pacific Northwest for shady areas with 3 or more hours of direct sunlight. Most seed distributors formulate mixes for a large geographic area and these blends don’t necessarily do well in our cool damp winters. The JB Select Premium Sun & Shade Lawn Seed is approximately 1/3 Perennial Ryegrass and 2/3 Chewings/Red Fescue. Chewings Fescues have been known for their fine leaf texture and to be among the most shade and drought tolerant of the cool season grasses. Its very dark green color allows mixing with today’s generation of dark green perennial ryegrasses. Red Fescue is widely planted for turf grass in the transition and Northern cool season areas. It is a fine bladed grass with medium to dark green color and its major use is for dry shaded areas in mixes, such as Perennial Ryegrass. Our Sun & Shade Mix blends well with any 100% Perennial Ryegrass lawn making it a good choice for overseeding in shady areas.