Ryegrass (Lolium) is a type of grass that is used for lawns, pastures, and forage. A cool-season grass, so it grows best in cool climates. Because ryegrass is a fast-growing grass that is tolerant of a variety of soils and conditions, it is often categorized as a grassy weed. While ryegrass is a good choice for lawns because it is low-maintenance and requires less water than other types of grasses, it can also completely take over your lawn, as it outcompetes other turf grasses for nutrients.
The two most common types of ryegrass are perennial and annual ryegrass. If you are looking for a long-lived grass tolerant of various conditions, perennial ryegrass is a good choice. If you are looking for a fast-growing grass that is a good choice for temporary cover crops or overseeding, annual ryegrass is a good choice. Below is a chart showing the main differences between these two types of grasses:
Feature
Perennial Ryegrass
Annual Ryegrass
Lifespan
Several years
One year
Growth rate
Fast
Faster
Drought tolerance
Good
Excellent
Heat tolerance
Fair
Good
Cold tolerance
Excellent
Fair
Disease resistance
Good
Fair
Pest resistance
Good
Fair
Palatability to livestock
Good
Excellent
Cost
Higher
Lower
Perennial ryegrass (Lolium perenne) is a grassy weed that is also considered a cover crop. It is a fast-growing weed that can be difficult to identify because it resembles healthy turfgrass. Perennial ryegrass outcompetes healthy turfgrass for water and nutrients, so it is important to identify and remove it from your lawn as soon as possible.
Here are some features of perennial ryegrass that can help you identify it:
Annual ryegrass (Lolium multiflorum) is a winter annual grass that is found throughout the United States. It has a fibrous root system and can reach heights of up to 3 feet. Annual ryegrass is a popular turfgrass and is often used for overseeding lawns during cold winter months. Farmers and ranchers also use it as a cover crop to provide food for grazing cattle.
Here are some features of annual ryegrass that can help you identify it:
The life cycle of ryegrass is as follows:
If ryegrass has invaded your lawn, taking care of it immediately is crucial, as this fast-growing grass spreads quickly. The best treatment for ryegrass that invaded your lawn is prevention.
Here are some tips for preventing and controlling perennial ryegrass: