Hemizonia congesta luzulifolia
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Common Name: Hayfield Tarweed
Hemizonia congesta luzulifolia is an annual plant that can grow up to 0.45 metres tall.
It is harvested from the wild for local use as a food and source of materials.
South-western N. America - Oregon to California.
Disturbed sites, grassy slopes, valley bottoms, openings in chaparral and woodlands, often clayey soils, serpentine from sea level to 1000 metres[
We have very little information on this plant and do not know if it will succeed in Britain, though it is worthwhile trying it outdoors as a spring-sown annual.
Seed - raw or cooked. Slightly bitter, but it has a good taste after being roasted[
]. It is used as a piñole[
]. An important source of piñole[
A yellow and a green dye can be obtained from the whole plant[
Seed - we have no information on this species but suggest sowing the seed in situ in late spring or early summer, only just covering the seed and ensuring that it does not dry out. Covering the seed with a sheet of glass may help germination.