Description of Ragweed, Western (Ambrosia psilostachya):
Western ragweed is a perennial that grows between 1 and 2 feet in height. It has grayish-green leaves that are bristly or hairy. The leaves are 2 to 5 inches in length and have very deep serrations that are sometimes pointed and sometimes rounded. It flowers in the late summer through fall.
CertainLabel™
Western Ragweed Optimized Control Options Finder
Legend:
Control
Suppression
No Control
According to the manufacturer approved labels: The following 3 weed killers, applied at the listed application rates, will control Western Ragweed.
Spot Treatment
per
Label Rate:
0.113 ounces per gallon
Cost Effectiveness:
Makes 88.594 gallons
at a cost of
$1.43 per gallon
at a cost of
$1.43 per gallon
Blanket Treatment
per
Label Rate:
0.113 ounces per 1,000 sqft
Cost Effectiveness:
Covers 88594 square feet
at a cost of
$1.43 per 1,000 sqft
at a cost of
$1.43 per 1,000 sqft
Safe On
Bermudagrass, Buffalograss, Centipedegrass, St. Augustinegrass, and Zoysiagrass
Safe Rate:
Safe Rate:
0.056 - 0.113 ounces per gallon
or
0.056 - 0.113 ounces per 1,000 sqft
CertainLabel™ Calculator for Celsius WG & these grass types
or
0.056 - 0.113 ounces per 1,000 sqft
Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Blanket Treatment
per
Label Rate:
0.09 - 0.16 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 199131 - 348480 square feet
at a cost of
$0.27 - $0.48 per 1,000 sqft
at a cost of
$0.27 - $0.48 per 1,000 sqft
Safe On
No safe on treatments listed. Please, review the label or contact the merchant for more information.
Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Blanket Treatment
per
Label Rate:
1.1 - 1.47 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 217800 - 290400 square feet
at a cost of
$1.27 - $1.69 per 1,000 sqft
at a cost of
$1.27 - $1.69 per 1,000 sqft
Instructions:
The lower rate is recommended for spring if spring transition is expected within a month. Higher rates may be used if spring transition is at least 4-6 weeks away or has already occurred and also for fall.
Safe On
Bermudagrass, Centipedegrass, St. Augustinegrass, and Zoysiagrass
Safe Rate:
Safe Rate:
1.1 - 1.47 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Coastal & these grass types