Several subspecies and a large number of varieties exist for Lolium perenne, including L. perenne subsp. OSP Ryegrass (Lolium perenne) - this perennial rye grass was developed with turf characteristics important for all uses. Lolium Lolium. Perennial ryegrass (Lolium perenne) and annual ryegrass (Lolium multiflorum) may be used to overseed dormant bermudagrass lawns in South Carolina. This cool-season grass does best in mild-cool temperatures and damp summer conditions. multiflorum, L. perenne subsp. cristatum (The Plant List, 2013). Notes on Taxonomy and Nomenclature Top of page. They provide a green cover during the winter when this warm-season grass goes dormant and turns brown after frost. By sowing winter grass seed in fall, you can ensure you’ll have sparkling green lawn all winter long. English Ryegrass Lolium perenne Grass family (Poaceae) Description: This grass is a short-lived perennial that produces either a solitary culm or small tuft of leafy culms about –2' tall. A number of species are grown as forage and lawn grasses in temperate Eurasia and Africa, and both perennial ryegrass (Lolium perenne) and annual ryegrass (L. multiflorum) … In addition, this rye grasshas superior seed quality, with a “Poa–free” tag based on extended seed testing so you are not planting your problems. Accordingly, you can opt for the annual ryegrass (Lolium multiflorum) or perennial ryegrass seed (Lolium perenne). Ryegrass, (genus Lolium), genus of about 10 species of grass in the family Poaceae. Winter grass refers to a type of ryegrass that’s used to overseed warm-season lawns. Both fertile and shorter infertile shoots are present. There are two types of winter grass used: annual ryegrass ( Lolium multiflorum ) and perennial ryegrass ( Lolium perenne ). L. perenne - L. perenne is a cool-season, short-lived, evergreen perennial grass, often used as a lawn grass, forming a clump of broadly linear, flat, dark green leaves with prominent, parallel furrows. Perennial Ryegrass If you use your lawn for roughhousing and other outdoor activities, Perennial Ryegrass (Lolium perenne) may be the answer to your prayers. Perennial ryegrass (Lolium perenne L.) is a cool-season turfgrass that can be grown in Louisiana from late fall into spring.Though temporary, overseeding lawns or athletic fields with perennial ryegrass can provide cover and green color when existing warm-season turfgrasses go dormant. https://www.crabgrasslawn.com/annual-ryegrass-vs-perennial-ryegrass With its fast germination and establishment abilities, perennial ryegrass (Lolium perenne) can easily grow to a 24-inch height if left unattended. Green flower spikelets in summer turn grey or tan with age. It prefers milder climates, but tolerates temperatures down to minus 16 to 18°C without a snow cover. With a snow cover, ryegrass can tolerate even lower temperatures. Lolium perenne L. Perennial ryegrass is the fastest establishing species of all the turfgrasses. 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