Home
Advanced Search Map Locator
View Settings
Nurseries Carrying this Plant Add Current Plant To List Edit Current Plant
Show all Photos

Butterflies Garden Planner My Plant Lists Nurseries Planting Guide Contact Calscape About Calscape
Tap map to see plants native to location
Order by Popularity Order by Common Name Order by Scientific Name Order by # of Butterflies Hosted
Show nursery cultivars Hide nursery cultivars
Show plants not in nurseries Hide plants not in nurseries
Grid view Text view
Loading....
Pacific Mountain Onion
Allium validum
  
About Pacific Mountain Onion (Allium validum) 3 Nurseries Carry This Plant Allium validum, known by several common names including swamp onion, wild onion, and Pacific onion, has been previously classified as a member of the lily family, Liliaceae; however, it is now thought of to be in the Alliaceae. Allium validum is native to California. The Allium validum bulb is three to five centimeters long, ovoid and clustered on the short end. The outer coat of the stout rhizome is brown or gray in color, fibrous, and vertically lined. The stem is 50 to 100 centimeters long and angled. There are three to six leaves more or less equal to the stem and the leaves are flat or more or less keeled. There are 15 to 40 flowers with pedicels being seven to twelve millimeters in length. The flower itself is six to ten millimeters, its perianth parts are more or less erect, narrowly lance-shaped, acuminate, and entire with a rose to white color. The stamens are exerted and there is no ovary crest.
Plant Description
Plant Type
Plant Type
Perennial herb

Size
Size
2 ft tall

Form
Form
Upright

Growth Rate
Growth Rate
Moderate

Flower Color
Flower Color
Purple, Lavender, Pink

Flowering Season
Flowering Season
Spring

Wildlife Supported
 


Landscaping Information
Sun
Sun
Full Sun

Moisture
Moisture
Moderate - High

Nurseries
Nurseries

Ease of Care
Ease of Care
Moderately Easy

Soil Description
Soil Description
Prefers loamy or clay soils. Grows poorly in sandy soils.

Common uses
Common uses
Bee Gardens

Propagation
Propagation?
For propagating by seed: No treatment.

Sunset Zones
Sunset Zones?
1*, 2*, 3, 4, 5, 6*, 7, 14, 15, 16, 17*, 18, 24

Natural Setting
Site Type
Site Type
Wet meadows

Climate
Climate
Annual Precipitation: 13.0" - 158.0", Summer Precipitation: 0.37" - 6.00", Coldest Month: 20.7" - 48.6", Hottest Month: 41.2" - 69.3", Humidity: 0.95" - 19.95", Elevation: 300" - 13253"

Alternative Names
Common Names: Pacific Onion, Swamp Onion, Wild Onion


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora


Sign in to your Calscape Account X




Once signed in, you'll be able to access any previously saved plant lists or create new ones.

Email Address
Password

Sign In