Question: what is the difference between perennial ryegrass and annual ryegrass?
Answer: Annual ryegrass (Lolium multiflorum), also called Italian ryegrass, is a cool-season forage grass that grows best at temperatures below 70 degrees Fahrenheit and may go dormant and turn brown in hot summer weather. Perennial ryegrass (L. perenne L), popular for turf that gets heavy wear, grows year around.