Ambrosia psilostachya

Western Ragweed

Plant family: Asteraceae - Sunflower


Plant type: Sub-shrub

Plant origin: N/A, California

Container Avail Qty Add to
My List
One Gallon 0   14.99

Add to My List

Flower Color Insignificant
Blooming Season Fall, Summer
Height 2-3 feet
Spread Spreading
Sun / Shade   
Monthly Water
> Learn More
Wildlife Friendliness Rating
Plant Community > Learn More

Chaparral, Coastal Sage Scrub

Best Soil Conditions > Learn More

Clay, Decomposed Granite, Adaptable

Special Characteristic

Attracts Wildlife

Plant Highlights

Western Ragweed is usually found on drier soil that contains significant amounts of clay, sand, or gravelly material. This plant is easy to grow, but it can become aggressive in situations that are well-drained and sunny.

The flowers are wind-pollinated and rarely attract pollen- or nectar-seeking insects. Caterpillars of moths feed on Western Ragweed. Grasshoppers feed on the foliage and are an important source of food to some insectivorous songbirds and upland gamebirds. The seeds are a popular source of food for many kinds of granivorous songbirds and upland gamebirds. The seeds are nutritious and remain available through the winter months. We grow this plant primarily for restoration projects and do not recommend this for a garden planting. Pollen may be an allergen.

Leave us a comment, your rating and/or your favorite picture

Please share your thoughts with us about this plant. We would like to hear about the good things and the problems. We also would appreciate seeing any photos and have you rate this plant. To leave comments or to rate a plant you must be registered.




No comments for this plant.