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.

Control Options for Horseweed (Marestail)

Legend:
Control
Suppression
No Control
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
Label Rate:
0.08 ounces per gallon
Cost Effectiveness:
Makes 118.12 gallons
at a cost of
$1.03 per gallon
Broadcast Treatment
per
Label Rate:
0.08 ounces per 1,000 sqft
Cost Effectiveness:
Covers 118125 square feet
at a cost of
$1.03 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
| More Info | View Label
Spot Treatment
of
Label Rate:
1% mixture
Cost Effectiveness:
Makes 25 gallons
at a cost of
$0.91 per gallon
Broadcast 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
| More Info | View Label
Spot Treatment
Label Rate:
1.47 fluid ounces per gallon
Cost Effectiveness:
Makes 43.54 gallons
at a cost of
$1.58 per gallon
Broadcast Treatment
Label Rate:
1.47 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43537 square feet
at a cost of
$1.58 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
| More Info | View Label
Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Broadcast Treatment
Label Rate:
0.09 - 0.16 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 199131 - 348480 square feet
at a cost of
$0.30 - $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
| More Info | View Label
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
| More Info | View Label
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:
0.73 - 1.84 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
0.73 - 1.47 fluid ounces per 1,000 sqft
Annual Ryegrass, Bentgrass, Colonial, Kentucky Bluegrass, Bluegrass, Annual, Perennial Ryegrass, Tall Fescue, Red Fescue, Fine Fescue, Bentgrass Safe Rate:
1.1 - 1.8 fluid ounces per gallon
or
1.1 - 1.84 fluid ounces 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
$0.67 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
$0.74 - $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
Comment and Ask Questions About Horseweed (Marestail)