Crabgrass Weed Killer

Digitaria spp. Herbicide

Description of Crabgrass (Digitaria spp.):
Crabgrass is a pervasive weed in the lawn. It's very noticable alongside regular green turf varieties due to the fact that it's yellowish to light green in color. It has an annoying habit of tillering and spreading low, also making it stand out and avoid being cut by a mower.

Pre-emergent herbicides are the only way to prevent crabgrass because it is spread by seed. This type of herbicide kills the young and weak plant as it tries to germinate. The seeds growing conditions are well known: when the soil temperature is 55 degrees or more for 4 to 5 consecutive days. If you put down a pre-emergent herbicide before then, you can beat the problem before it takes over the lawn.

If it has already emerged, an herbicide containing mesotrione is one of the only options to kill it and leave your regular grass unharmed.

Control Options for Crabgrass

Legend:
Control
Suppression
No Control
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.11 ounces per gallon
Cost Effectiveness:
Makes 88.59 gallons
at a cost of
$1.37 per gallon
Instructions:
Large crabgrass (Digitaria sanguinalis) is best controlled in early growth stages. Sequential applications of Celsius WG herbicide may be necessary.
Broadcast Treatment
per
Label Rate:
0.11 ounces per 1,000 sqft
Cost Effectiveness:
Covers 88594 square feet
at a cost of
$1.37 per 1,000 sqft
Instructions:
Large crabgrass (Digitaria sanguinalis) is best controlled in early growth stages. Sequential applications of Celsius WG herbicide may be necessary.
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
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Broadcast Treatment
Label Rate:
1.15 - 1.7 lbs per 1,000 sqft
Cost Effectiveness:
Covers 29412 - 43478 square feet
at a cost of
$3.31 - $4.90 per 1,000 sqft
Instructions:
Half rate application.
Broadcast Treatment
Label Rate:
2.3 - 3.4 lbs per 1,000 sqft
Cost Effectiveness:
Covers 14706 - 21739 square feet
at a cost of
$6.63 - $9.80 per 1,000 sqft
Instructions:
Full rate application.
Safe On
Bentgrass, Kentucky Bluegrass, Fine Fescue, Tall Fescue, Perennial Ryegrass, Bahiagrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, Zoysiagrass Safe Rate:
2.3 - 4.25 lbs per 1,000 sqft
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
2.5 fluid ounces per gallon
Cost Effectiveness:
Makes 9.6 gallons
at a cost of
$2.62 per gallon
Broadcast Treatment
Label Rate:
4 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 6000 square feet
at a cost of
$4.19 per 1,000 sqft
Safe On
No safe on treatments listed. Please, review the label or contact the merchant for more information.
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.08 fluid ounces per gallon
Cost Effectiveness:
Makes 96 gallons
at a cost of
$0.63 per gallon
Broadcast Treatment
Label Rate:
0.09 - 0.18 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43560 - 87120 square feet
at a cost of
$0.70 - $1.39 per 1,000 sqft
Safe On
St. Augustinegrass Safe Rate:
0.09 fluid ounces per 1,000 sqft
Kentucky Bluegrass, Centipedegrass, Buffalograss, Tall Fescue Safe Rate:
0.09 - 0.18 fluid ounces per 1,000 sqft
Perennial Ryegrass, Fine Fescue, Red Fescue, Chewings Fescue, Hard Fescue Safe Rate:
0.11 fluid 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:
Fall Applications for Spring Crabgrass Control in Cool-Season Grasses: In those areas where the ground freezes in the winter, Prodiamine 65WDG can be applied in the fall at rates of 1.0-1.15 lbs./acre after the soil temperature falls below 50°F but before the ground freezes. This application will control crabgrass the following spring.
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
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
Application Interval:
Early Spring
Label Rate:
2 lbs per 1,000 sqft
Cost Effectiveness:
Covers 5000 square feet
at a cost of
$3.70 per 1,000 sqft
Instructions:
Apply when lawn is dry.
Safe On
Kentucky Bluegrass, Perennial Ryegrass, Centipedegrass, Tall Fescue, St. Augustinegrass, Zoysiagrass, Kikuyu Grass, Bermudagrass, Bahiagrass, Buffalograss Safe Rate:
2 lbs per 1,000 sqft
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
Label Rate:
0.08 fluid ounces per gallon
Cost Effectiveness:
Makes 96 gallons
at a cost of
$0.68 per gallon
Broadcast Treatment
Label Rate:
0.09 - 0.18 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43560 - 87120 square feet
at a cost of
$0.75 - $1.49 per 1,000 sqft
Safe On
St. Augustinegrass Safe Rate:
0.09 fluid ounces per 1,000 sqft
Chewings Fescue, Hard Fescue, Perennial Ryegrass, Fine Fescue, Red Fescue Safe Rate:
0.11 fluid ounces per 1,000 sqft
Kentucky Bluegrass, Centipedegrass, Buffalograss, Tall Fescue Safe Rate:
0.11 - 0.18 fluid ounces per 1,000 sqft
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