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.

Control Options for Johnsongrass

Legend:
Control
Suppression
No Control
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.06 ounces per gallon
Cost Effectiveness:
Makes 177.19 gallons
at a cost of
$0.68 per gallon
Broadcast Treatment
per
Label Rate:
0.06 ounces per 1,000 sqft
Cost Effectiveness:
Covers 177187 square feet
at a cost of
$0.68 per 1,000 sqft
Safe On
St. Augustinegrass, Bermudagrass, Centipedegrass, Zoysiagrass, Buffalograss Safe Rate:
0.06 - 0.11 ounces per gallon
or
0.06 - 0.11 ounces per 1,000 sqft
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.01 - 0.02 ounces per gallon
Cost Effectiveness:
Makes 55.37 - 88.59 gallons
at a cost of
$1.01 - $1.62 per gallon
Broadcast Treatment
per
Label Rate:
0.03 - 0.05 ounces per 1,000 sqft
Cost Effectiveness:
Covers 27225 - 43560 square feet
at a cost of
$2.06 - $3.30 per 1,000 sqft
Safe On
Bentgrass, Kentucky Bluegrass, Bermudagrass, Bahiagrass, Centipedegrass, Kikuyu Grass, St. Augustinegrass, Seashore Paspalum, Zoysiagrass, Buffalograss Safe Rate:
0.01 - 0.02 ounces per gallon
or
0.03 - 0.05 ounces per 1,000 sqft
Pre-Emergent
Post-Emergent
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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
Bentgrass Safe Rate:
1.8 - 2.4 lbs per 1,000 sqft
Fine Fescue, Red Fescue Safe Rate:
1.8 - 3.6 lbs per 1,000 sqft
Buffalograss, Kentucky Bluegrass, Perennial Ryegrass Safe Rate:
1.8 - 4.8 lbs per 1,000 sqft
Bermudagrass, Bahiagrass, Centipedegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, Zoysiagrass Safe Rate:
1.8 - 7.2 lbs per 1,000 sqft
Pre-Emergent
Post-Emergent
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Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Broadcast Treatment
per
Label Rate:
0.18 - 0.83 ounces per 1,000 sqft
Cost Effectiveness:
Covers 96386 - 432432 square feet
at a cost of
$0.14 - $0.64 per 1,000 sqft
Instructions:
Refer to the green safe rates table for the correct rate for your turf-type.
Safe On
Bentgrass Safe Rate:
0.18 - 0.37 ounces per 1,000 sqft
Fine Fescue Safe Rate:
0.18 - 0.42 ounces per 1,000 sqft
Buffalograss, Kentucky Bluegrass, Perennial Ryegrass Safe Rate:
0.18 - 0.55 ounces per 1,000 sqft
Bermudagrass, Bahiagrass, Centipedegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, Zoysiagrass Safe Rate:
0.36 - 0.83 ounces per 1,000 sqft
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