Geranium erianthum DC.

vernacular woolly geranium — species · Geraniaceae

USDA: GEER2
GBIF: 2890394
Rank: species

woolly geranium (Geranium erianthum) — Platephotograph · margombCC BY-NC source · iNaturalist ↗

§2Habit & range

Growth habit: Forb/herb
Duration: Perennial
Group: Dicot
Family: Geraniaceae Juss.
Genus: Geranium

§2a

Native status, by region

AK Alaska Native
CAN Canada Native

§2b

County-level range

· 19 counties across 1 state

Legend Native · 19 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

Drought: None
Shade: High
Fire: None
Salinity: None
Anaerobic: None
Hedging: None

§3b

Climate & soil

Cold tolerance: -20 °F minimum
Frost-free days: 120 min.
Precipitation: 20–276 in/yr
pH range: 4–7.5
Root depth: 12 in min.
Fertility need: Medium

§3c

Form & growth

Growth form: Rhizomatous
Growth rate: Moderate
Lifespan: Short
Mature height: 3 ft
Foliage texture: Coarse
Foliage colour: Green
Porosity (summer): Dense
Porosity (winter): Porous
Flower colour: Purple
Fruit colour: Brown
Fire resistant: No
N fixation: None
Toxicity: None

§3d

Reproduction

Bloom period: Early Summer
Spread rate: Slow
Stratify: No
Seeds / lb: 99,792
Propagation: seed, cuttings, bare root, container

§3e

Use & availability

Commercial availability: Routinely Available
Nursery stock: Yes
Browse palatability: Low
Palatable, human: Yes
Protein potential: Low
Lumber: No
Christmas tree: No

§4Counties, by state

Recorded in 19 counties across 1 state.

§5Sources & provenance

USDA PLANTS

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

plants.usda.gov/GEER2 ↗

GBIF Backbone

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

gbif.org/species/2890394 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T05:45:41Z