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Bransford, W.D. and Dolphia
Allium validum S. Wats.
Pacific onion, Swamp onion, Tall swamp onion
USDA Symbol: ALVA
USDA Native Status: Native to U.S.
From vigorous rhizomes occur large patches of flat, upright leaves, and flowering stalks to 1-3 ft. in height. Purple-pink flowers occur in tight clusters.
Plant CharacteristicsDuration: Perennial Habit: Herb Leaf Complexity: Simple Leaf:
Green Fruit: Size Class:
Bloom InformationBloom Color: Pink
Bloom Time: Jun , Jul , Aug , Sep
CA , ID , NV , OR , WA Canada: BC Native Distribution:
Mts. from Lake Co., CA to s. B.C., e. to w. ID & n.e. NV Native Habitat:
Swampy meadows at medium & high elevations USDA Native Status: L48(N), CAN(N)
Growing ConditionsWater Use: High
Light Requirement: Sun
Soil Moisture: Moist
CaCO3 Tolerance: Medium
Soil Description: Moist soils.
Conditions Comments: Not Available
BenefitConspicuous Flowers: yes
PropagationDescription: Seed is easy to germinate using a gritty medium. Bulbs can be thinned in two or three years. Offsets may also be used to obtain new plants.
Seed Collection: Not Available
Seed Treatment: No treatment.
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:
Santa Barbara Botanic Garden
- Santa Barbara, CANative Seed Network
- Corvallis, OR
Recommended Species Lists
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Record Modified: 2007-01-01
Research By: TWC Staff