cotton grass: meaning, definition, pronunciation and examples
C2Specialist / Botanical
Quick answer
What does “cotton grass” mean?
A type of sedge plant (genus Eriophorum) found in bogs and tundra, known for its white, fluffy, cotton-like seed heads.
Audio
Pronunciation
Definition
Meaning and Definition
A type of sedge plant (genus Eriophorum) found in bogs and tundra, known for its white, fluffy, cotton-like seed heads.
Botanical term for a group of perennial herbaceous plants in the family Cyperaceae, often indicator species for wetland habitats.
Dialectal Variation
British vs American Usage
Differences
The term is identical in both varieties; differences lie in the common names of specific species (e.g., 'common cotton grass' vs. 'tall cotton grass').
Connotations
Neutral botanical term in both. In the UK, it may be more familiar due to the prevalence of moorland and bog habitats.
Frequency
More frequent in UK ecological/botanical discourse due to habitat prevalence. In the US, primarily used in contexts relating to northern/tundra regions (e.g., Alaska, Canada).
Grammar
How to Use “cotton grass” in a Sentence
The [habitat] was dotted with cotton grass.Cotton grass [verb: waved/fluttered/grew] in the bog.Vocabulary
Collocations
Examples
Examples of “cotton grass” in a Sentence
verb
British English
- The field was beginning to cotton grass in the late spring.
- The wetland cottongrasses beautifully in May.
American English
- The marsh cotton grassed profusely after the snowmelt.
adverb
British English
- [No standard adverbial use]
American English
- [No standard adverbial use]
adjective
British English
- The cotton-grass heads shimmered in the wind.
- We studied the cotton-grass ecology of the mire.
American English
- The cotton grass tufts are a key feature of the tundra biome.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Used in botany, ecology, environmental science, and physical geography papers discussing peatlands, tundra, or wetland conservation.
Everyday
Rare, except for nature enthusiasts, hikers, or gardeners describing wetland plants.
Technical
Precise botanical term for species within the genus Eriophorum.
Vocabulary
Synonyms of “cotton grass”
Watch out
Common Mistakes When Using “cotton grass”
- Treating it as a countable noun in singular form without 'a piece/clump of' (e.g., 'I saw a cotton grass' is less common than 'I saw some cotton grass').
- Confusing it with 'cotton' the crop or material.
FAQ
Frequently Asked Questions
No, it is a sedge (family Cyperaceae), not a true grass (family Poaceae). The name refers to its grass-like appearance and cotton-like seed heads.
No. The 'cotton' refers only to the visual appearance of the fluffy seed heads. The fibers are not spinnable like commercial cotton.
In acidic wetlands of the Northern Hemisphere: bogs, moors, tundra, and peatlands across Europe, Asia, and North America.
Yes. It is a key peat-forming plant, helps stabilize wetland soils, and provides food and habitat for various insects and animals.
A type of sedge plant (genus Eriophorum) found in bogs and tundra, known for its white, fluffy, cotton-like seed heads.
Cotton grass is usually specialist / botanical in register.
Cotton grass: in British English it is pronounced /ˈkɒt.ən ˌɡrɑːs/, and in American English it is pronounced /ˈkɑː.t̬ən ˌɡræs/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms for this specific botanical term]”
Learning
Memory Aids
Mnemonic
Imagine a cotton field growing not on a farm, but on a cold, soggy bog—that's cotton grass.
Conceptual Metaphor
NATURE'S COTTON: The seed heads are metaphorically 'cotton' produced by the bog environment.
Practice
Quiz
Cotton grass is most accurately described as a type of: