couch grass: meaning, definition, pronunciation and examples
Low (C2)Formal/Technical (Botany, Horticulture, Gardening); Informal in everyday gardening contexts.
Quick answer
What does “couch grass” mean?
A fast-spreading perennial grass with creeping underground stems (rhizomes), considered a tenacious weed.
Audio
Pronunciation
Definition
Meaning and Definition
A fast-spreading perennial grass with creeping underground stems (rhizomes), considered a tenacious weed.
May be used metaphorically to describe something pervasive, invasive, or difficult to eradicate.
Dialectal Variation
British vs American Usage
Differences
UK: Primarily 'couch grass'. US: More commonly 'quackgrass' (or 'quack grass'), though 'couch grass' is understood. The scientific name *Elymus repens* is standard.
Connotations
Identical in both varieties: a notorious, difficult-to-control weed.
Frequency
'Couch grass' is the standard term in the UK and Commonwealth. 'Quackgrass' is dominant in American English, especially in agricultural and gardening contexts.
Grammar
How to Use “couch grass” in a Sentence
[The garden] is INFESTED with couch grass.We need to [GET RID OF / REMOVE] the couch grass.The couch grass [SPREAD] throughout the lawn.Vocabulary
Collocations
Examples
Examples of “couch grass” in a Sentence
verb
British English
- The entire border has been couched over by that wretched grass.
- We spent the weekend trying to couch the vegetable patch.
American English
- The lawn was completely quacked over.
- They're quacking the infested field.
adjective
British English
- The couch-grass problem is worse this year.
- A couch-grass-infested lawn.
American English
- A quackgrass infestation ruined the crop.
- The quackgrass rhizomes are deep.
Usage
Meaning in Context
Business
Rare, except perhaps in landscaping/gardening business contexts.
Academic
Used in botany, ecology, agriculture, and horticulture papers.
Everyday
Common in gardening conversations and advisory content (e.g., 'How to deal with couch grass').
Technical
Precise term in plant biology, weed science, and agricultural extension guides.
Vocabulary
Synonyms of “couch grass”
Strong
Neutral
Weak
Vocabulary
Antonyms of “couch grass”
Watch out
Common Mistakes When Using “couch grass”
- Spelling: 'coach grass'. Pronunciation: Mispronouncing 'couch' as /koʊtʃ/ (like the furniture) instead of /kaʊtʃ/ or /kʊtʃ/ in this context.
FAQ
Frequently Asked Questions
Yes, they generally refer to the same species, *Elymus repens*, but 'quackgrass' is the preferred common name in North America.
Because it spreads via tough, deep rhizomes (underground stems). Pulling it often breaks these, and each piece can grow a new plant.
Historically, its rhizomes have been used in herbal medicine. It's also a pioneer species that can stabilize soil, though this is rarely a desired trait in gardens.
No, that's a coincidence. The plant name 'couch' likely comes from an old word meaning 'to live' or 'to grow', related to its vigorous nature.
A fast-spreading perennial grass with creeping underground stems (rhizomes), considered a tenacious weed.
Couch grass is usually formal/technical (botany, horticulture, gardening); informal in everyday gardening contexts. in register.
Couch grass: in British English it is pronounced /ˈkaʊtʃ ˌɡrɑːs/, and in American English it is pronounced /ˈkʊtʃ ˌɡræs/ or /ˈkaʊtʃ ˌɡræs/ (also for 'quackgrass': /ˈkwækˌɡræs/). Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[Metaphor] The corruption spread through the department like couch grass.”
Learning
Memory Aids
Mnemonic
Imagine a COUCH (sofa) made of grass in your garden; it's so heavy and rooted you can't get rid of it, just like the weed.
Conceptual Metaphor
INVASIVE/DIFFICULT PROBLEM IS A TENACIOUS WEED.
Practice
Quiz
In American English, what is the most common common name for 'couch grass'?