Index / Search / Tragopogon pratensis
§1 Plant — species · Asteraceae
Tragopogon pratensis L.
vernacular Jack-go-to-bed-at-noon
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Biennial
- Group
- Dicot
- Family
- Asteraceae Bercht. & J. Presl
- Genus
- Tragopogon
§2a
Native status, by region
- CAN Canada Introduced
- L48 Lower 48 States Introduced
§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- Medium
- Shade
- Medium
- Moisture use
- Medium
- Fire
- Low
- Salinity
- None
- Anaerobic
- None
- CaCO₃
- High
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -33 °F minimum
- Frost-free days
- 105 min.
- Precipitation
- 14–55 in/yr
- pH range
- 5.2–8
- Root depth
- 10 in min.
- Fertility need
- Medium
- Soil texture
- coarse, medium
§3c
Form & growth
- Growth form
- Single Crown
- Growth rate
- Rapid
- Lifespan
- Short
- Mature height
- 4 ft
- Foliage texture
- Coarse
- Foliage colour
- Green
- Porosity (summer)
- Porous
- Porosity (winter)
- Porous
- Flower colour
- White
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Mid Spring
- Seed abundance
- Low
- Seed begins
- Spring
- Seed ends
- Summer
- Spread rate
- Rapid
- Stratify
- No
- Seeds / lb
- 30,000
- Propagation
- seed
§3e
Use & availability
- Commercial availability
- No Known Source
- Nursery stock
- No
- Palatable, human
- Yes
- Lumber
- No
- Christmas tree
- No
§4Montana distribution
Recorded in 22 of 56 Montana counties.
Introduced · 22 counties
- Beaverhead 30001
- Big Horn 30003
- Carbon 30009
- Carter 30011
- Chouteau 30015
- Deer Lodge 30023
- Flathead 30029
- Gallatin 30031
- Glacier 30035
- Judith Basin 30045
- Lake 30047
- Lewis and Clark 30049
- Madison 30057
- Meagher 30059
- Mineral 30061
- Missoula 30063
- Park 30067
- Phillips 30071
- 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/TRPR ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/5386897 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-25
fetched 2026-05-25T16:28:53Z