This species was traditionally placed in the family Hydrophyllaceae. However, research in the early 21st century has recognized its close affinity with the family Boraginaceae and has demoted its rank to a subfamily of the Boraginaceae. We have adopted this treatment here, but some authorities have maintained the family Hydrophyllaceae as distinct and there is some chance that it will be reinstated[
Phacelia commixta Greene
Phacelia tripinnata Fisch., C.A.Mey. & Avé-Lall.
Common Name: Fiddleneck
Phacelia tanacetifolia is an annual plant that can grow up to 0.60 metres tall.
The plant is grown as an ornamental in gardens and can be used as a green manure that also attracts bees.
South-western N. America - California, Baja California. Often naturalized in Europe[
Open flats and slopes below 1200 metres[
Succeeds in any moderately fertile well-drained soil in a sunny position[
]. Prefers a moist soil[
The flowers are a rich source of nectar and is occasionally grown commercially as a crop for bees[
The flowers are a rich source of nectar and the plant is occasionally grown commercially as a crop for bees[
Used as a green manure crop, but has not as yet (1980) been properly tested in Britain[
]. It is not very deep rooted.
Seed - sow in situ in late spring or late summer. The plant often self-sows.