Horseweed (Marestail) Weed Killer

Erigeron canadensis Herbicide

Description of Horseweed (Marestail) (Erigeron canadensis):
Horseweed, also known as marestail, is a winter and summer annual. It grows as a rosette of leaves and goes dormant in the wintertime. It primarily emerges in the fall. A single plant can produce 200,000 seeds that float on "parachutes" similar to that of a dandelion, making it very capable of spreading quickly.
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.75 - 1.8 fluid ounces per gallon
Cost Effectiveness:
Makes 11.11 - 26.67 gallons
at a cost of
$1.27 - $3.06 per gallon
Broadcast Treatment
Label Rate:
0.735 - 1.837 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 10890 - 27225 square feet
at a cost of
$1.25 - $3.12 per 1,000 sqft
Safe On
Bermudagrass, Zoysiagrass, Buffalograss Safe Rate:
0.75 - 1.5 fluid ounces per gallon
or
0.735 - 1.469 fluid ounces per 1,000 sqft
Annual Ryegrass, Colonial Bentgrass, Kentucky Bluegrass, Bluegrass, Annual, Perennial Ryegrass, Tall Fescue, Red Fescue, Fine Fescue, Bentgrass Safe Rate:
1.1 - 1.8 fluid ounces per gallon
or
1.102 - 1.837 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% mixture
Cost Effectiveness:
Makes 25 gallons
at a cost of
$1.08 per gallon
Broadcast Treatment
Label Rate:
0.735 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43560 square feet
at a cost of
$0.62 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:
1.7 - 2.125 lbs per 1,000 sqft
Cost Effectiveness:
Covers 23529 - 29412 square feet
at a cost of
$4.17 - $5.21 per 1,000 sqft
Instructions:
Half rate application.
Broadcast Treatment
Label Rate:
3.4 - 4.25 lbs per 1,000 sqft
Cost Effectiveness:
Covers 11765 - 14706 square feet
at a cost of
$8.34 - $10.42 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:
1.47 fluid ounces per gallon
Cost Effectiveness:
Makes 43.54 gallons
at a cost of
$1.54 per gallon
Broadcast Treatment
Label Rate:
1.47 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43537 square feet
at a cost of
$1.54 per 1,000 sqft
Instructions:
Not for use to control this weed in California.
Safe On
Bentgrass Safe Rate:
0.5 - 1 fluid ounces per 1,000 sqft
Bluegrass, Roughstalk, Chewings Fescue, Fine Fescue, Hard Fescue, Red Fescue, Bermudagrass, Bluegrass, Annual, Kentucky Bluegrass, Buffalograss, Tall Fescue, Annual Ryegrass, Perennial Ryegrass, Zoysiagrass Safe Rate:
1.47 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:
0.092 - 0.161 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
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
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