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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.
According to the manufacturer approved labels: The following 12 weed killers, applied at the listed application rates, will control Horseweed (Marestail).
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:
2.86 lbs per 1,000 sqft
Cost Effectiveness:
Covers 5000 square feet
at a cost of
$4.80 per 1,000 sqft
Safe On
Annual Ryegrass, Bahiagrass, Bermudagrass, Buffalograss, Centipedegrass, Chewings Fescue, Fine Fescue, Hard Fescue, Kentucky Bluegrass, Kikuyu Grass, Perennial Ryegrass, Red Fescue, Tall Fescue, and Zoysiagrass
Safe Rate:
2.86 lbs per 1,000 sqft
CertainLabel™ Calculator for Scotts Turf Builder Weed and Feed & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
of
Label Rate:
1% mixture
Cost Effectiveness:
Makes 25 gallons
at a cost of
$0.91 per gallon
Blanket Treatment
Label Rate:
0.73 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43560 square feet
at a cost of
$0.52 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:
5 lbs per 1,000 sqft
Cost Effectiveness:
Covers 4000 square feet
at a cost of
$6.87 per 1,000 sqft
Safe On
Bahiagrass, Bermudagrass, Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, and Tall Fescue
Safe Rate:
5 lbs per 1,000 sqft
CertainLabel™ Calculator for Scotts Turf Builder Triple Action & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.75 - 1.8 fluid ounces per gallon
Cost Effectiveness:
Makes 11.111 - 26.667 gallons
at a cost of
$1.21 - $2.91 per gallon
Blanket Treatment
Label Rate:
0.73 - 1.84 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 10890 - 27225 square feet
at a cost of
$1.19 - $2.97 per 1,000 sqft
Safe On
Annual Bluegrass, Annual Ryegrass, Bentgrass, Colonial Bentgrass, Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, Red Fescue, and Tall Fescue
Safe Rate:
1.1 - 1.8 fluid ounces per gallon
or
1.1 - 1.84 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for SpeedZone & these grass types
Bermudagrass, Buffalograss, and Zoysiagrass
Safe Rate:
0.75 - 1.5 fluid ounces per gallon
or
0.73 - 1.47 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for SpeedZone & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
1.47 fluid ounces per gallon
Cost Effectiveness:
Makes 43.537 gallons
at a cost of
$1.45 per gallon
Blanket Treatment
Label Rate:
1.47 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43537 square feet
at a cost of
$1.45 per 1,000 sqft
Instructions:
Not for use to control this weed in California.
Safe On
Annual Bluegrass, Annual Ryegrass, Bermudagrass, Buffalograss, Chewings Fescue, Fine Fescue, Hard Fescue, Kentucky Bluegrass, Perennial Ryegrass, Red Fescue, Roughstalk Bluegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
1.47 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Drive XLR8 & these grass types
Bentgrass
Safe Rate:
0.5 - 1 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Drive XLR8 & Bentgrass
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:
2.86 lbs per 1,000 sqft
Cost Effectiveness:
Covers 5000 square feet
at a cost of
$4.37 per 1,000 sqft
Safe On
Annual Ryegrass, Bahiagrass, Bermudagrass, Buffalograss, Centipedegrass, Chewings Fescue, Fine Fescue, Hard Fescue, Kentucky Bluegrass, Kikuyu Grass, Perennial Ryegrass, Red Fescue, Tall Fescue, and Zoysiagrass
Safe Rate:
2.86 lbs per 1,000 sqft
CertainLabel™ Calculator for Scotts Turf Builder WinterGuard Fall Weed and Feed & these grass types
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.
Blanket Treatment
Label Rate:
0.09 - 0.16 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 199131 - 348480 square feet
at a cost of
$0.28 - $0.49 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:
0.085 ounces per gallon
Cost Effectiveness:
Makes 118.125 gallons
at a cost of
$1.10 per gallon
Blanket Treatment
per
Label Rate:
0.085 ounces per 1,000 sqft
Cost Effectiveness:
Covers 118125 square feet
at a cost of
$1.10 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
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Spot Treatment
Label Rate:
0.08 fluid ounces per gallon
Cost Effectiveness:
Makes 96 gallons
at a cost of
$0.68 per gallon
Blanket 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 - $1.50 per 1,000 sqft
Safe On
Chewings Fescue, Fine Fescue, Hard Fescue, Perennial Ryegrass, and Red Fescue
Safe Rate:
0.11 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Tenacity & these grass types
Buffalograss, Centipedegrass, Kentucky Bluegrass, and Tall Fescue
Safe Rate:
0.11 - 0.18 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Tenacity & these grass types
Bermudagrass
Safe Rate:
0.08 fluid ounces per gallon
or
0.11 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Tenacity & Bermudagrass
St. Augustinegrass
Safe Rate:
0.09 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Tenacity & St. Augustinegrass
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
$0.57 per gallon
Blanket Treatment
Label Rate:
0.09 - 0.18 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43560 - 87120 square feet
at a cost of
$0.62 - $1.25 per 1,000 sqft
Safe On
Chewings Fescue, Fine Fescue, Hard Fescue, Perennial Ryegrass, and Red Fescue
Safe Rate:
0.11 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Primesource Meso 4 SC Select & these grass types
Buffalograss, Centipedegrass, Kentucky Bluegrass, and Tall Fescue
Safe Rate:
0.09 - 0.18 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Primesource Meso 4 SC Select & these grass types
St. Augustinegrass
Safe Rate:
0.09 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Primesource Meso 4 SC Select & St. Augustinegrass
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 - 2.12 lbs per 1,000 sqft
Cost Effectiveness:
Covers 23529 - 29412 square feet
at a cost of
$4.53 - $5.67 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
$9.06 - $11.33 per 1,000 sqft
Instructions:
Full rate application.
Safe On
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Fine Fescue, Kentucky Bluegrass, Kikuyu Grass, Perennial Ryegrass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
2.3 - 4.25 lbs per 1,000 sqft
CertainLabel™ Calculator for Dimension 270G & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
of
Label Rate:
0.5 - 1% mixture
Cost Effectiveness:
Makes 100 - 200 gallons
at a cost of
$0.25 - $0.51 per gallon
Blanket Treatment
Label Rate:
0.73 - 1.1 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 116160 - 174240 square feet
at a cost of
$0.29 - $0.44 per 1,000 sqft
Safe On
No safe on treatments listed. Please, review the label or contact the merchant for more information.