Herbs & Plants

Allium douglasii

Botanical NameĀ : Allium douglasii
Family: Amaryllidaceae
Subfamily: Allioideae
Genus: Allium
Species: A. douglasii
Clade: Angiosperms
Clade: Monocots
Order: Asparagales

Synonyms : A. hendersonii. A. nevii.

Common Names: Douglas onion

Habitat :Allium douglasii is native to Western N. America – Washington to Oregon and Idaho. It grows on low hills in shallow soil that is wet in winter but dry in summer.
Allium douglasii is a perennial herb, growing to a BULB growing 6–16 inches in height.Erect to upright flowering stem, 2 grooved leaves. Plant particularly strong-smelling. Leaves shorter than flower stem, staying green through flowering.

It is in flower from Jul to August. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees, insects. Flowers numerous, tiny, star-shaped, in upright, tightly clustered flower head. Flowers are up to 10 mm across; tepals pink or purple with green midribs; anthers blue; pollen white or light gray. Often abundant populations of deep pink to white grow in spring-moist areas in steppe.

Allium douglasii produces egg-shaped bulbs up to 3 cm long. Scapes are round in cross-section, up to 40 cm tall..
Prefers a sunny position in a light well-drained dry to moist soil. The bulbs should be planted fairly deeply. Grows well with most plants, especially roses, carrots, beet and chamomile, but it inhibits the growth of legumes. This plant is a bad companion for alfalfa, each species negatively affecting the other. Members of this genus are rarely if ever troubled by browsing deer.

Seed – sow spring in a cold frame. Prick out the seedlings into individual pots when they are large enough to handle – if you want to produce clumps more quickly then put three plants in each pot. Grow them on in the greenhouse for at least their first winter and plant them out into their permanent positions in spring once they are growing vigorously and are large enough. Division in spring. The plants divide successfully at any time in the growing season, pot up the divisions in a cold frame or greenhouse until they are growing well and then plant them out into their permanent positions.
Edible Uses:
Edible Parts: Flowers; Leaves; Root

Bulb – raw or cooked. A mild and sweet flavour, it can be sliced and used in salads or used as a vegetable or flavouring in cooked foods. The bulb is up to 3cm long and 2cm wide. Leaves – raw or cooked. Flowers – raw. Used as a garnish on salads.

Medicinal Uses:
Although no specific mention of medicinal uses has been seen for this species, members of this genus are in general very healthy additions to the diet. They contain sulphur compounds (which give them their onion flavour) and when added to the diet on a regular basis they help reduce blood cholesterol levels, act as a tonic to the digestive system and also tonify the circulatory system.

Other Uses: ...Repellent….The juice of the plant is used as a moth repellent. The whole plant is said to repel insects and moles.
Known Hazards: Although no individual reports regarding this species have been seen, there have been cases of poisoning caused by the consumption, in large quantities and by some mammals, of certain members of this genus. Dogs seem to be particularly susceptible.
Disclaimer : The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplement, it is always advisable to consult with your own health care provider.