Perennial ryegrass is a short-lived, cool-season perennial bunchgrass with a shallow, fibrous root system. Cool, moist winters and warm, dry summers of the Pacific Northwest (PNW) are suitable for seed production of many crops, including perennial ryegrass and other cool-season grass species. The PNW currently produces about 85 percent of the perennial ryegrass seed used in the United States and about 40 percent of the world supply.
Organization |
Oregon State University Extension |
Publisher |
Oregon State University |
Published |
November, 2013 |
Material Type |
Written Material |