Western Ragweed
| Plant Profile | |
|---|---|
| FYUSE 3d Image |
Common Name: Western Ragweed Species Name: Ambrosia psilostachya Plant Type: Forb Family Name: Asteraceae, Sunflower Family |
Examples of Western RagweedAmbrosia psilostachya
| Plant Facts | |
|---|---|
| Origin | Native |
| Duration | Perennial |
| Distribution in the U.S. | Across the continent except the Rocky Mountains and East-Central States |
| Distribution in Oklahoma | Across the state |
ID Characteristics
- Field Identification Characteristics
Vegetative
- Gray-green foliage with coarse texture
- Leaves directly attached to stem; narrow with many pointed lobes
- Similar to Sagewort but lacks the bright silvery underleaf contrast
Floral
- Columns of small green flower heads
- Leaf and Stem Characteristics
- Leaf Type: Simple
- Leaf Arrangement: Opposite at lower nodes; alternate at upper
- Leaf Shape: Deeply lobed
- Stipules: Absent
- Floral Characteristics
- Flower Color: Greenish-yellow to yellowish-white
- Flower Timing: July-September
- Fruit Type: Achene
| Habitat/Ecology | |
|---|---|
| Soil Type | All |
| Habitat | Prairie, woodlands, urban areas; density increasing with disturbance |
| Successional Stage | Mid to late |
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