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
· 8 counties across 5 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 8 counties across 5 states/territories.
Alaska view state ↗ 1 I ▾
Massachusetts view state ↗ 4 N ▾
New Hampshire view state ↗ 1 N ▾
New York view state ↗ 1 N ▾
Pennsylvania 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 2026-05-26T05:45:41Z