Index / Search / Allium tolmiei

§1 Plant

Allium tolmiei (Hook.) Baker ex S. Watson

vernacular Tolmie's onion — species · Liliaceae

USDA: ALTO
GBIF: 2857235
Rank: species

Tolmie's onion (Allium tolmiei) — Platephotograph · Matt RealaCC BY-NC source · iNaturalist ↗

§2Habit & range

Growth habit: Forb/herb
Duration: Perennial
Group: Monocot
Family: Liliaceae Juss.
Genus: Allium

§2a

Native status, by region

L48 Lower 48 States Native

§2b

County-level range

· 44 counties across 5 states/territories

Legend Native · 44 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

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

§3b

Climate & soil

Cold tolerance: -33 °F minimum
Frost-free days: 120 min.
Precipitation: 8–16 in/yr
pH range: 6–8
Root depth: 8 in min.
Fertility need: Low
Soil texture: coarse, medium, fine

§3c

Form & growth

Growth form: Single Crown
Growth rate: Rapid
Lifespan: Short
Mature height: 1 ft
Foliage texture: Medium
Foliage colour: Green
Porosity (summer): Porous
Porosity (winter): Porous
Flower colour: Red
Fruit colour: Brown
Fire resistant: No
N fixation: None
Toxicity: None

§3d

Reproduction

Bloom period: Early Spring
Seed abundance: Low
Seed begins: Spring
Seed ends: Summer
Spread rate: Slow
Stratify: No
Propagation: seed, bulb

§3e

Use & availability

Commercial availability: Contracting Only
Nursery stock: No
Browse palatability: High
Graze palatability: High
Palatable, human: Yes
Protein potential: Low
Lumber: No
Christmas tree: No

§4Counties, by state

Recorded in 44 counties across 5 states/territories.

California view state ↗ 3 N ▾

Idaho view state ↗ 15 N ▾

Nevada view state ↗ 2 N ▾

Oregon view state ↗ 19 N ▾

Washington view state ↗ 5 N ▾

§5Sources & provenance

USDA PLANTS

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

plants.usda.gov/ALTO ↗

GBIF Backbone

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

gbif.org/species/2857235 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T20:46:58Z