Jump to Top

Johnsongrass Weed Killer

Sorghum halepense Herbicide

Description of Johnsongrass (Sorghum halepense):
Johnsongrass is a perennial ryegrass and is considered one of the ten worst weeds in the world. It's characterized by pyramidal, purplish flower heads and reproduces by seed and rhizome. The stems can grow from 3 to 10 feet in height and are unbranched, smooth, erect, stout, hollow, and round. It somewhat resembles corn.
According to the manufacturer approved labels: The following 4 weed killers, applied at the listed application rates, will control Johnsongrass.
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Blanket Treatment
per
Label Rate:
0.185 - 0.83 ounces per 1,000 sqft
Cost Effectiveness:
Covers 96386 - 432432 square feet
at a cost of
$0.14 - $0.65 per 1,000 sqft
Instructions:
Refer to the green safe rates table for the correct rate for your turf-type.
Safe On
Bahiagrass, Bermudagrass, Centipedegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.36 - 0.83 ounces per 1,000 sqft
CertainLabel™ Calculator for Prodiamine 65 WDG & these grass types
Buffalograss, Kentucky Bluegrass, and Perennial Ryegrass
Safe Rate:
0.185 - 0.55 ounces per 1,000 sqft
CertainLabel™ Calculator for Prodiamine 65 WDG & these grass types
Bentgrass
Safe Rate:
0.185 - 0.37 ounces per 1,000 sqft
CertainLabel™ Calculator for Prodiamine 65 WDG & Bentgrass
Fine Fescue
Safe Rate:
0.185 - 0.42 ounces per 1,000 sqft
CertainLabel™ Calculator for Prodiamine 65 WDG & Fine Fescue
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Broadcast Treatment
Label Rate:
3.1 - 7.2 lbs per 1,000 sqft
Cost Effectiveness:
Covers 2500 - 5806 square feet
at a cost of
$5.15 - $11.95 per 1,000 sqft
Safe On
Bahiagrass, Bermudagrass, Centipedegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
1.8 - 7.2 lbs per 1,000 sqft
CertainLabel™ Calculator for Pro Turf Barricade & these grass types
Buffalograss, Kentucky Bluegrass, and Perennial Ryegrass
Safe Rate:
1.8 - 4.8 lbs per 1,000 sqft
CertainLabel™ Calculator for Pro Turf Barricade & these grass types
Fine Fescue and Red Fescue
Safe Rate:
1.8 - 3.6 lbs per 1,000 sqft
CertainLabel™ Calculator for Pro Turf Barricade & these grass types
Bentgrass
Safe Rate:
1.8 - 2.4 lbs per 1,000 sqft
CertainLabel™ Calculator for Pro Turf Barricade & Bentgrass
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
Label Rate:
0.056 ounces per gallon
Cost Effectiveness:
Makes 177.187 gallons
at a cost of
$0.73 per gallon
Blanket Treatment
per
Label Rate:
0.056 ounces per 1,000 sqft
Cost Effectiveness:
Covers 177187 square feet
at a cost of
$0.73 per 1,000 sqft
Safe On
Bermudagrass, Buffalograss, Centipedegrass, St. Augustinegrass, and Zoysiagrass
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
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
Label Rate:
0.014 - 0.023 ounces per gallon
Cost Effectiveness:
Makes 55.37 - 88.592 gallons
at a cost of
$1.12 - $1.79 per gallon
Blanket Treatment
per
Label Rate:
0.029 - 0.046 ounces per 1,000 sqft
Cost Effectiveness:
Covers 27225 - 43560 square feet
at a cost of
$2.27 - $3.64 per 1,000 sqft
Safe On
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Centipedegrass, Kentucky Bluegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, and Zoysiagrass
Safe Rate:
0.014 - 0.023 ounces per gallon
or
0.029 - 0.046 ounces per 1,000 sqft
CertainLabel™ Calculator for Certainty & these grass types