Biological Name:

Elymus repens (Quackgrass)

Natural Habitat:

Quackgrass is a perennial grass that is often considered a weed. It has long, narrow leaves and grows in a dense, tufted manner.


Quackgrass is a perennial grass with creeping underground stems and long narrow

Frequently Asked Questions (FAQs)

Q: Is quackgrass the same as crabgrass?
A: Quackgrass and crabgrass look somewhat alike, but they are very different. For one thing, quackgrass is a cool-season perennial (note its ability to grow in the high mountains) where crabgrass is a warm-season annual. They have different ways of spreading and the short-term solutions for eradication are different.

Q: Can you get rid of quackgrass?
A: method of controlling Quack grass is to apply a non-selective herbicide that contains the active ingredient Glyphosate (Round Up). Be careful because Glyphosate kills desirable grasses as well as weeds. Apply the herbicide only on the Quack grass patches.

Q: Can you pull out quackgrass?
A: Pull up as much quackgrass as you can, being careful not to spread seeds by bagging the weeds in paper or plastic. Check the soil carefully for any traces of the quackgrass root system and remove. Treat the affected area with a non-selective herbicide. Wait a week, then treat the soil again.

Q: Does quackgrass come back every year?
A: Quackgrass is a perennial, storing sugar in roots and rhizomes in the late summer and fall to ensure winter survival. In the following spring the plant has a ready supply of energy, giving it a competitive advantage over many crops that start from seed.

Q: How do you control quack grass?
A: To prevent infestations from spreading, spot treat with an effective herbicide to control isolated patches of quackgrass in fields, along fencerows and roadsides, and in noncrop areas. Clean and remove rhizome fragments from plows, disks, and harrows to avoid introducing fragments or seeds into other areas.

Q: Can you overseed quackgrass?
A: Unlike Crabgrass, Quackgrass is a perennial that does not die each season. The best way to handle Quackgrass organically is to overseed the area with desirable grasses, mow regularly, and fertilize organically to encourage the healthy grasses to outcompete the Quackgrass.

Q: Is quack grass good?
A: Uses and Management: Quackgrass provides fairly good spring forage, spreads rapidly, and quickly stabilizes moist, erodible soils. It is designated a noxious weed in the State of Utah, however, and is not recommended for seeding.

Q: Is there another name for quack grass?
A: Quackgrass is a weed worthy of many names. In Latin its name is Elymus repens, but is also referred to by a previous name, Agropyron repens. It has an abundance of common names across the country, including: couchgrass, dog grass, quickgrass, quitch, scotch, twitch and witchgrass.

Q: Does Roundup work on quack grass?
A: Several postemergent herbicides can control quackgrass in broadleaf crops. The main advantage of using in-crop herbicides is that quackgrass may be suppressed while spraying for annual grass weeds and volunteer cereals. However, Roundup (glyphosate) is still the most effective herbicide on quackgrass.

Q: What causes quackgrass?
A: What Causes Quackgrass to Grow in Lawns? Quackgrass seeds are a tasty treat for small birds, such as sparrows. Often these birds lose the seeds in your lawn, causing the weed to grow. Additionally, straw bales often contain quackgrass seeds that can get into your lawn.

Q: How long does quack grass last?
A: A quackgrass plant produces about 25 seeds on its main stem. Tiller stems are less likely to have spikes. Seeds can germinate even if they have not been harvested at full maturity, which is often only in August. They survive for up to four years in the ground.

Q: How do you prevent quackgrass?
A: Quackgrass will begin to produce new above-ground shoots in lawns in late summer and through the fall. By applying a pre-emergent herbicide in early summer and again in the fall, you can help keep your lawn healthy and strong by preventing new weed growth.

Q: What is quackgrass good for?
A: Quackgrass makes good hay, pasturage, silage, and lawns and often can be utilized more economically than it can be destroyed.

Q: How do you kill quackgrass naturally?
A: Here’s how to kill quackgrass using vinegar.Mix vinegar with orange oil well.Apply the mixture on quackgrass in your lawn at full strength of sunlight.Allow it to sit until it rains.Repeat the process if the weed does not dry and die after the first application.Steps for Killing Quackgrass With Vinegar – CG Lawnwww.crabgrasslawn.com › steps-for-killing-quackg…www.crabgrasslawn.com › steps-for-killing-quackg…

Q: How is quackgrass spread?
A: Quackgrass spreads by both seed and rhizome. Each mature plant will yield about 25 seeds, which stay menacingly viable for years once on the ground. It’s vital to pull Quackgrass before it seeds. The rhizomes sound like some insidious invention cooked up by a comic book super villain.

Q: How deep do quack grass roots go?
A: If the soil is not cultivated, the rhizomes will only develop near the soil surface, often at a depth of less than 10 cm (4 in.). The deeper a rhizome segment is buried, the less able it is to produce stems that will reach the surface.

About the author

Samuel is a gardening professional and enthusiast who has spent over 20 years advising homeowners and farm owners on weed identification, prevention and removal. He has an undergraduate degree in plant and soil science from Michigan State University.