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Phacelia tanacetifolia Benth.
Lacy phacelia, Lacy scorpion-weed
USDA Symbol: PHTA
USDA Native Status: Native to U.S.
This is a 1-3 ft., annual phacelia with divided, feathery, clasping, tansy-like leaves covered with short, stiff hairs. The lavender-blue, bell-shaped flowers occur in fiddlehead clusters near the tops of the stems. Long stamens and styles extend well beyond the flowers.
Plant CharacteristicsDuration: Annual Habit: Herb Leaf:
Fruit: Size Class:
Bloom InformationBloom Color: Blue
Bloom Time: Mar , Apr , May
AZ , CA , KS , MA , ME , MI , NV , OR Native Distribution:
Much of CA to AZ Native Habitat:
Open flats & slopes below 4000 ft. USDA Native Status: L48(N),
Growing ConditionsWater Use: Medium
Light Requirement: Sun
Soil Moisture: Dry
CaCO3 Tolerance: Medium
Soil Description: Rocky or sandy soils.
Conditions Comments: Not Available
BenefitWarning: Some Phacelia species produce a skin irritation in sensitive people, similar to that of poison oak or poison ivy.
Conspicuous Flowers: yes
PropagationDescription: Propagated only from seeds. Sow on top of soil as light is needed for germination.
Seed Collection: Not Available
Seed Treatment: While no stratification is needed, germination is enhanced by scarifying the seeds. Scratch or nick the seed coat then soak in water overnight.
Commercially Avail: yes
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Native Seed Network
- Corvallis, OR
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Record Modified: 2007-01-01
Research By: TWC Staff