Index / Search / Amsinckia lycopsoides
§1 Plant
Amsinckia lycopsoides Lehm.
vernacular tarweed fiddleneck — species · Boraginaceae
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Annual
- Group
- Dicot
- Family
- Boraginaceae Juss.
- Genus
- Amsinckia
§2a
Native status, by region
- AK Alaska Introduced
- CAN Canada Native
- L48 Lower 48 States Native
§2b
County-level range
· 110 counties across 18 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- High
- Shade
- High
- Moisture use
- Low
- Fire
- None
- Salinity
- Medium
- Anaerobic
- None
- CaCO₃
- Low
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -28 °F minimum
- Frost-free days
- 170 min.
- Precipitation
- 8–16 in/yr
- pH range
- 5.8–8.2
- Root depth
- 6 in min.
- Fertility need
- Medium
- Soil texture
- medium
§3c
Form & growth
- Growth form
- Single Crown
- Growth rate
- Moderate
- Mature height
- 3 ft
- Foliage texture
- Coarse
- Foliage colour
- Green
- Porosity (summer)
- Porous
- Porosity (winter)
- Porous
- Flower colour
- Yellow
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- Severe
§3d
Reproduction
- Bloom period
- Late Spring
- Seed abundance
- Low
- Seed begins
- Spring
- Seed ends
- Summer
- Spread rate
- Rapid
- Stratify
- No
- Seeds / lb
- 225,000
- Propagation
- seed
§3e
Use & availability
- Commercial availability
- No Known Source
- Nursery stock
- No
- Browse palatability
- Low
- Graze palatability
- Low
- Palatable, human
- No
- Protein potential
- Low
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 110 counties across 18 states/territories.
Alaska view state ↗ 1 I ▾
California view state ↗ 37 N ▾
- Alameda 06001
- Butte 06007
- Calaveras 06009
- Colusa 06011
- Contra Costa 06013
- Fresno 06019
- Glenn 06021
- Humboldt 06023
- Lake 06033
- Los Angeles 06037
- Madera 06039
- Marin 06041
- Mendocino 06045
- Merced 06047
- Mono 06051
- Monterey 06053
- Napa 06055
- Placer 06061
- Sacramento 06067
- San Benito 06069
- San Bernardino 06071
- San Diego 06073
- San Francisco 06075
- San Joaquin 06077
- San Luis Obispo 06079
- Santa Barbara 06083
- Santa Clara 06085
- Santa Cruz 06087
- Shasta 06089
- Siskiyou 06093
- Solano 06095
- Sonoma 06097
- Stanislaus 06099
- Tehama 06103
- Trinity 06105
- Tuolumne 06109
- Yolo 06113
Colorado view state ↗ 1 N ▾
Idaho view state ↗ 8 N ▾
Illinois view state ↗ 1 N ▾
Kansas view state ↗ 1 N ▾
Massachusetts view state ↗ 4 N ▾
Missouri view state ↗ 2 N ▾
Nebraska view state ↗ 1 N ▾
New Hampshire view state ↗ 1 N ▾
New York view state ↗ 1 N ▾
Ohio view state ↗ 2 N ▾
Oklahoma view state ↗ 1 N ▾
Oregon view state ↗ 24 N ▾
- Benton 41003
- Coos 41011
- Crook 41013
- Deschutes 41017
- Douglas 41019
- Gilliam 41021
- Grant 41023
- Harney 41025
- Hood River 41027
- Jackson 41029
- Jefferson 41031
- Josephine 41033
- Lane 41039
- Malheur 41045
- Marion 41047
- Morrow 41049
- Multnomah 41051
- Sherman 41055
- Umatilla 41059
- Union 41061
- Wallowa 41063
- Wasco 41065
- Washington 41067
- Wheeler 41069
Pennsylvania view state ↗ 1 N ▾
Washington view state ↗ 21 N ▾
Wisconsin view state ↗ 2 N ▾
Wyoming view state ↗ 1 N ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/AMLY ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/2925874 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T20:46:58Z