[Lolium perenne L.]
ryegrass is a bunch-type grass that is used for winter overseeding on sites
where high quality and winter color are needed. The texture, color, and density
of perennial ryegrass are very similar to those of Kentucky bluegrass.
Perennial ryegrass is often utilized for winter overseeding on golf course
fairways and teeboxes, athletic fields, and high profile home lawns. Perennial
ryegrass is often confused with tall fescue and/or Kentucky bluegrass. However,
Kentucky bluegrass has a boat-shaped leaf tip and distinctive light-colored
lines on both sides of the midrib. Tall fescue has rough leaf blade margins
whereas perennial ryegrass has smooth ones. Also, tall fescue has rolled
vernation in the leaf bud and perennial ryegrass has folded vernation.
spike, with flattened spikelets along each stem
folded in the bud
collar-like to blunt, may be toothed near top, 0.02 - 0.06 inches (0.5 - 1.5
Season / Life Cycle
season turf or perennial weed
Blade Tip Shape
bright green, sharply creased, deeply ridged upper surface, lower surface
smooth and glossy, edges slightly rough
0.2 inches (2 - 5 mm) wide
by midrib, not hairy, distinct
is usually flattened, reddish at base
Note: Still not
sure this is the right turfgrass? The Turf & Weed Identification
Decision Aid may help. Check the TurfFiles glossary for definitions
of unfamiliar terms.
Need help in selecting the best
turfgrass for your particular situation? The Turf/Cultivar Selection
Decision Aid will help you sort through the options which are available.
For more information on turfgrass/cultivar selection, establishing a new lawn,
caring for a new lawn, or renovating a lawn, see AG-69,
Diseases Which May Affect This Turfgrass
© North Carolina State University. This information sheet was prepared
by Arthur H. Bruneau, Bridget R. Lassiter, Gail G. Wilkerson, Emily J.
Erickson, Casey Reynolds, Jenifer J. Reynolds, and Gregory S. Buol. Department
of Crop Science, College of Agriculture & Life Sciences, North Carolina
State University. Prepared April 29, 2008. Available
on-line at www.turffiles.ncsu.edu. This publication was made possible through a
grant provided by the Center for Turfgrass Environmental Research &
Education (CENTERE) whose purpose is to support worthwhile projects that will
benefit both the private sector and the public, and protect the environment.