Index / Search / Helenium autumnale
§1 Plant — species · Asteraceae
Helenium autumnale L.
vernacular common sneezeweed
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Perennial
- Group
- Dicot
- Family
- Asteraceae Bercht. & J. Presl
- Genus
- Helenium
§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
- Low
- Shade
- High
- Moisture use
- Medium
- Fire
- None
- Salinity
- Low
- Anaerobic
- Low
- CaCO₃
- High
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -43 °F minimum
- Frost-free days
- 100 min.
- Precipitation
- 10–60 in/yr
- pH range
- 4–7.5
- Root depth
- 6 in min.
- Fertility need
- Low
- Soil texture
- coarse, medium, fine
§3c
Form & growth
- Growth form
- Single Stem
- Growth rate
- Rapid
- Lifespan
- Moderate
- Mature height
- 4.9 ft
- Foliage texture
- Fine
- Foliage colour
- Green
- Porosity (summer)
- Moderate
- Porosity (winter)
- Porous
- Flower colour
- Yellow
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- Severe
§3d
Reproduction
- Bloom period
- Fall
- Seed abundance
- Medium
- Seed begins
- Fall
- Seed ends
- Fall
- Spread rate
- Rapid
- Stratify
- No
- Seeds / lb
- 1,464,516
- Propagation
- seed, bare root
§3e
Use & availability
- Commercial availability
- Routinely Available
- Nursery stock
- No
- Browse palatability
- Low
- Graze palatability
- Low
- Palatable, human
- No
- Lumber
- No
- Christmas tree
- No
§4Montana distribution
Recorded in 10 of 56 Montana counties.
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/HEAU ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/5401877 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-25
fetched 2026-05-25T16:28:53Z