Canada Thistle Weed Killer

Cirsium arvense Herbicide

Description of Thistle, Canada (Cirsium arvense):
Canada thistle is an extremely difficult weed to kill and remove. September is the best time of year to apply herbicide to Canada thistle. It spreads underground via rhizomes and in a system of vertical and horizontal roots. The seeds are cotton-like and spread via the wind during seeding.
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.75 - 2.4 fluid ounces per gallon
Cost Effectiveness:
Makes 6.67 - 21.33 gallons
at a cost of
$1.00 - $3.21 per gallon
Broadcast Treatment
Label Rate:
0.75 - 2.4 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 6667 - 21333 square feet
at a cost of
$1.00 - $3.21 per 1,000 sqft
Safe On
Bahiagrass, Buffalograss, Centipedegrass, St. Augustinegrass Safe Rate:
0.75 - 1.8 fluid ounces per gallon
or
0.75 - 1.1 fluid ounces per 1,000 sqft
Bermudagrass, Zoysiagrass Safe Rate:
0.75 - 1.8 fluid ounces per gallon
or
0.75 - 1.8 fluid ounces per 1,000 sqft
Perennial Ryegrass, Tall Fescue, Red Fescue, Fine Fescue Safe Rate:
1.5 - 2.4 fluid ounces per gallon
or
1.5 - 2.4 fluid ounces per 1,000 sqft
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.085 ounces per gallon
Cost Effectiveness:
Makes 118.12 gallons
at a cost of
$1.14 per gallon
Broadcast Treatment
per
Label Rate:
0.085 ounces per 1,000 sqft
Cost Effectiveness:
Covers 118125 square feet
at a cost of
$1.14 per 1,000 sqft
Safe On
St. Augustinegrass, Bermudagrass, Centipedegrass, Zoysiagrass, Buffalograss Safe Rate:
0.056 - 0.113 ounces per gallon
or
0.056 - 0.113 ounces per 1,000 sqft
Pre-Emergent
Post-Emergent
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Spot Treatment
of
Label Rate:
1.5% mixture
Cost Effectiveness:
Makes 16.67 gallons
at a cost of
$1.61 per gallon
Broadcast Treatment
Label Rate:
2.938 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 10890 square feet
at a cost of
$2.47 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
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Broadcast Treatment
Label Rate:
0.115 - 0.161 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 199131 - 278784 square feet
at a cost of
$0.34 - $0.48 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:
0.083 fluid ounces per gallon
Cost Effectiveness:
Makes 96 gallons
at a cost of
$0.62 per gallon
Broadcast Treatment
Label Rate:
0.092 - 0.184 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43560 - 87120 square feet
at a cost of
$0.69 - $1.38 per 1,000 sqft
Safe On
St. Augustinegrass Safe Rate:
0.092 fluid ounces per 1,000 sqft
Kentucky Bluegrass, Centipedegrass, Buffalograss, Tall Fescue Safe Rate:
0.092 - 0.184 fluid ounces per 1,000 sqft
Perennial Ryegrass, Fine Fescue, Red Fescue, Chewings Fescue, Hard Fescue Safe Rate:
0.115 fluid ounces per 1,000 sqft
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.083 fluid ounces per gallon
Cost Effectiveness:
Makes 96 gallons
at a cost of
$0.72 per gallon
Broadcast Treatment
Label Rate:
0.092 - 0.184 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43560 - 87120 square feet
at a cost of
$0.79 - $1.58 per 1,000 sqft
Safe On
St. Augustinegrass Safe Rate:
0.092 fluid ounces per 1,000 sqft
Chewings Fescue, Hard Fescue, Perennial Ryegrass, Fine Fescue, Red Fescue Safe Rate:
0.115 fluid ounces per 1,000 sqft
Kentucky Bluegrass, Centipedegrass, Buffalograss, Tall Fescue Safe Rate:
0.115 - 0.184 fluid ounces per 1,000 sqft
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.667 fluid ounces per gallon
Cost Effectiveness:
Makes 192 gallons
at a cost of
$0.25 per gallon
Broadcast Treatment
Label Rate:
3.2 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 40000 square feet
at a cost of
$1.20 per 1,000 sqft
Safe On
Red Fescue, Bentgrass, Centipedegrass, Carpetgrass Safe Rate:
0.333 fluid ounces per gallon
or
1.6 fluid ounces per 1,000 sqft
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