Theodore Payne California Native Plant Database

Ambrosia psilostachya

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Ambrosia psilostachya
Ambrosia psilostachya

Botanical Name: Ambrosia psilostachya
Common Name: Western Ragweed

Very drought tolerant. Good in many soils. Fragrant foliage can cause allegries.

Plant Family: Asteraceae
Plant Type: Shrub
Height by Width: 2-4' H x 2-4' W
Growth Habit: Upright
Deciduous/Evergreen: Semi-evergreen
Growth Rate: Moderate to fast
Sun Exposure: Sun to part shade
Soil Preference: Well-draining
Water Requirements: Infrequent to moderate
Cold Hardy to: 15 degrees F
Flower Season: Summer
Flower Color: Grey-green
Endangered?: No
Distribution: Throughout California
Natural Habitat: Common. Roadsides, dry fields

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