PlantsAmbrosia→Western Ragweed (Ambrosia psilostachya)

Common names:
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Give a thumbs up Perennial Ragweed
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General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Partial or Dappled Shade
Minimum cold hardiness: Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Maximum recommended zone: Zone 9b
Plant Height: 6 - 18 inches
Plant Spread: 3 - 6 inches
Leaves: Fragrant
Fruit: Edible to birds
Flowers: Inconspicuous
Bloom Size: Under 1"
Flower Time: Late spring or early summer
Late summer or early fall
Underground structures: Rhizome
Uses: Will Naturalize
Edible Parts: Fruit

credit: Krzysztof Ziarnek Kenraiz

Photo gallery:
Location: Point Mugu State Park, CaliforniaDate: 2010-09-08
By Kelli
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Location: Malibu Creek State Park, Calabasas, CaliforniaDate: 2014-01-24Young plant
By Kelli
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Discussion Threads about this plant
Thread Title Last Reply Replies
Is it an Artemisia annua? by gardenliu Oct 22, 2018 10:07 PM 12
Unknown #2 by papab Jul 18, 2018 10:25 AM 11
Western ragweed (Ambrosia psilostachya); Northern Arizona, Reservation by goldbellie Aug 13, 2015 10:56 AM 5

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