Western ragweed is a native perennial wildflower with a tall, branching form that produces dense spikes of small, wind-pollinated flowers in late summer and fall. It thrives in dry, open areas and is commonly found in prairies and disturbed areas across the western and central United States.
Overview
Form
Upright
Growth Rate
fast
Size
1.5–4′ tall × 1–3′ wide
Dormancy
deciduous
Tolerances & Soil
high
Zone 4aZone 9b
1471013
ColderWarmer
Zone range: Zone 4a to Zone 9b
Seasonality
Bloom Season
J
F
M
A
M
J
J
A
S
O
N
D
Season of Interest
SummerFall
Herb
Soft non-woody plants of the field layer.
Succession Role
pioneerearly successional
Native to the United States
Native Range
Western and central North America
Native to: Montana, Wyoming, Colorado, New Mexico, Arizona, Utah, Nevada, Idaho, Oregon, California, North Dakota, South Dakota, Nebraska, Kansas, Oklahoma, Texas, Minnesota, Iowa, Missouri, Arkansas
