Perennial ryegrass has a fine to medium texture and is light green in color. Annual ryegrass is inferior to perennial ryegrass in most qualities. It is an upright bunch-type with no rhizomes or tillers. It establishes very fast and may act as a short-lived perennial in very moderate climates but has extremely low tolerance for cold temperatures. It has little tolerance for moisture or heat stress and prefers a pH of 6.0 to 7.0.
Winter ryegrass is an annual cereal sown in fall and spring for pasture, winter cover or a manure crop. It is lush, high in protein, and low in fiber.
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