Deschampsia flexuosa (L.) Trin.

vernacular wavy hairgrass — species · Poaceae

USDA: DEFL
GBIF: 4149465 syn.
Rank: species

wavy hairgrass (Deschampsia flexuosa) — Platephotograph · Giovanni PericoCC BY-NC source · iNaturalist ↗

§2Habit & range

Growth habit: Graminoid
Duration: Perennial
Group: Monocot
Family: Poaceae Barnhart
Genus: Deschampsia

§2a

Native status, by region

AK Alaska Introduced
CAN Canada Native
GL Greenland Native
L48 Lower 48 States Native
SPM St. Pierre & Miquelon Native

§2b

County-level range

· 4 counties across 1 state

Legend Native · 4 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

Drought: Medium
Shade: Low
Moisture use: Medium
Fire: High
Salinity: None
Anaerobic: None
CaCO₃: Medium
Hedging: None

§3b

Climate & soil

Cold tolerance: -38 °F minimum
Frost-free days: 80 min.
Precipitation: 32–55 in/yr
pH range: 4.8–6.8
Root depth: 8 in min.
Fertility need: Low
Soil texture: coarse, medium

§3c

Form & growth

Growth form: Bunch
Growth rate: Moderate
Lifespan: Short
Mature height: 2.6 ft
Foliage texture: Fine
Foliage colour: Green
Porosity (summer): Porous
Porosity (winter): Porous
Flower colour: Yellow
Fruit colour: Brown
Fire resistant: No
N fixation: None
Toxicity: None

§3d

Reproduction

Bloom period: Late Spring
Seed abundance: Medium
Seed begins: Summer
Seed ends: Summer
Spread rate: Slow
Stratify: No
Seeds / lb: 668,000
Propagation: seed

§3e

Use & availability

Commercial availability: No Known Source
Nursery stock: No
Palatable, human: No
Lumber: No
Christmas tree: No

§4Counties, by state

Recorded in 4 counties across 1 state.

Rhode Island view state ↗ 4 N ▾

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/DEFL ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/4149465 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-25

fetched 2026-05-25T18:27:19Z