[Onions: The Genus Allium in the Cascade Mountains of Oregon and Washington]

Pacific Onion, Pacific Swamp Onion, Tall Swamp Onion, Swamp Onion

Allium validum

Pacific Onion, Pacific Swamp Onion, Tall Swamp Onion, Swamp Onion: Allium validum

Swamp onion blooming in a vernally moist ditch at the High Prairie trailhead, Mount Hood National Forest.....August 5, 2025.

Swamp Onion: Allium validum - Pacific Onion, Pacific Swamp Onion, Tall Swamp Onion, Swamp Onion: Allium validum

The photo at left shows swamp onion as seen at a spring in open coniferous forest on the eastern slopes of Lookout Mt. to the east of Mt. Hood..........August 2, 2008. The photo at right shows swamp onion with maturing fruits observed at High Prairie, Badger Creek Wilderness......August 27, 2022..
Paul Slichter