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Marshelder Weed Killer

Iva annua Herbicide

Description of Marshelder (Iva annua):
Marshelder, also known as Narrowleaf sumpweed, is a very drought-tolerant warm-season annual weed. It's mostly green, including the flowers, and looks similar to ragweed.
According to the manufacturer approved labels: The following 3 weed killers, applied at the listed application rates, will control Marshelder.
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
1 - 1.5 fluid ounces per gallon
Cost Effectiveness:
Makes 21.333 - 32 gallons
at a cost of
$0.73 - $1.09 per gallon
Blanket Treatment
Label Rate:
1.1 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 29040 square feet
at a cost of
$0.80 per 1,000 sqft
Safe On
Annual Ryegrass, Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Chewings Fescue, Fine Fescue, Hard Fescue, Kentucky Bluegrass, Kikuyu Grass, Perennial Ryegrass, Red Fescue, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
1 - 1.5 fluid ounces per gallon
or
1.1 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for 2,4-d Amine & these grass types
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
of
Label Rate:
1.5% mixture
Cost Effectiveness:
Makes 16.667 gallons
at a cost of
$1.37 per gallon
Blanket Treatment
Label Rate:
2.94 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 10890 square feet
at a cost of
$2.09 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
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.