Index / Search / Perideridia gairdneri
§1 Plant — species · Apiaceae
Perideridia gairdneri (Hook. & Arn.) Mathias
vernacular Gardner's yampah
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Perennial
- Group
- Dicot
- Family
- Apiaceae Lindl.
- Genus
- Perideridia
§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
- Low
- Moisture use
- High
- Fire
- Medium
- Salinity
- None
- Anaerobic
- Low
- CaCO₃
- Low
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -18 °F minimum
- Frost-free days
- 140 min.
- Precipitation
- 14–24 in/yr
- pH range
- 6–7.5
- Root depth
- 12 in min.
- Fertility need
- Medium
- Soil texture
- medium, fine
§3c
Form & growth
- Growth form
- Single Crown
- Growth rate
- Moderate
- Lifespan
- Moderate
- Mature height
- 4 ft
- Foliage texture
- Fine
- 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
- Medium
- Seed begins
- Spring
- Seed ends
- Summer
- Spread rate
- Slow
- Stratify
- No
- Seeds / lb
- 400,000
- 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 23 of 56 Montana counties.
Native · 23 counties
- Big Horn 30003
- Carbon 30009
- Cascade 30013
- Fergus 30027
- Flathead 30029
- Gallatin 30031
- Glacier 30035
- Granite 30039
- Hill 30041
- Judith Basin 30045
- Lake 30047
- Lewis and Clark 30049
- Madison 30057
- Meagher 30059
- Mineral 30061
- Missoula 30063
- Park 30067
- Petroleum 30069
- Phillips 30071
- Ravalli 30081
- Sanders 30089
- Stillwater 30095
- Teton 30099
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/PEGA3 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/3034543 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-25
fetched 2026-05-25T16:28:53Z