Index / Search / Eriogonum umbellatum
§1 Plant — species · Polygonaceae
Eriogonum umbellatum Torr.
vernacular sulphur-flower buckwheat
§2Habit & range
Habit and range
- Growth habit
- Forb/herb, Shrub, Subshrub
- Duration
- Perennial
- Group
- Dicot
- Family
- Polygonaceae Juss.
- Genus
- Eriogonum
§2a
Native status, by region
- CAN Canada Native
- L48 Lower 48 States Native
§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- High
- Shade
- High
- Moisture use
- Low
- Fire
- Low
- Salinity
- High
- Anaerobic
- None
- CaCO₃
- High
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- 7 °F minimum
- Frost-free days
- 140 min.
- Precipitation
- 8–18 in/yr
- pH range
- 6.5–9
- Root depth
- 20 in min.
- Fertility need
- Low
- Soil texture
- coarse, medium
§3c
Form & growth
- Growth form
- Multiple Stem
- Growth rate
- Slow
- Lifespan
- Long
- Mature height
- 1 ft
- Height @ 20 y
- 1 ft
- Foliage texture
- Coarse
- Foliage colour
- Gray-Green
- Porosity (summer)
- Dense
- Porosity (winter)
- Moderate
- Flower colour
- Yellow
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Early Summer
- Seed abundance
- Medium
- Seed begins
- Summer
- Seed ends
- Fall
- Spread rate
- Slow
- Stratify
- No
- Seeds / lb
- 209,500
- Propagation
- seed, bare root, container
§3e
Use & availability
- Commercial availability
- Routinely Available
- Nursery stock
- Yes
- Browse palatability
- Medium
- Graze palatability
- Low
- Palatable, human
- No
- Protein potential
- Low
- Lumber
- No
- Christmas tree
- No
§4Montana distribution
Recorded in 32 of 56 Montana counties.
Native · 32 counties
- Beaverhead 30001
- Big Horn 30003
- Broadwater 30007
- Carbon 30009
- Cascade 30013
- Fergus 30027
- Flathead 30029
- Gallatin 30031
- Glacier 30035
- Golden Valley 30037
- Granite 30039
- Hill 30041
- Jefferson 30043
- Judith Basin 30045
- Lake 30047
- Lewis and Clark 30049
- Liberty 30051
- Lincoln 30053
- Madison 30057
- Meagher 30059
- Missoula 30063
- Musselshell 30065
- Park 30067
- Phillips 30071
- Powell 30077
- Ravalli 30081
- Silver Bow 30093
- Stillwater 30095
- Sweet Grass 30097
- Teton 30099
- Toole 30101
- Wheatland 30107
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/ERUM ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/2889574 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-25
fetched 2026-05-25T16:28:53Z