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Purple Nutsedge Weed Killer

Cyperus rotundus Herbicide

Description of Nutsedge, Purple (Cyperus rotundus):
Purple nutsedge is a type of sedge that is very common in the lawn. It resembles normal grass, but usually grows much faster and can be seen reaching high above the otherwise even turfgrass. Purple nutsedge is called purple due to the nutlets at the top of the plant being that color.
According to the manufacturer approved labels: The following 19 weed killers, applied at the listed application rates, will control Purple Nutsedge.
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.476 ounces per gallon
Cost Effectiveness:
Makes 1 gallons
at a cost of
$11.00 per gallon
Blanket Treatment
per
Label Rate:
0.476 ounces per 1,000 sqft
Cost Effectiveness:
Covers 1000 square feet
at a cost of
$11.00 per 1,000 sqft
Safe On
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Centipedegrass, Fine Fescue, Kentucky Bluegrass, Kikuyu Grass, Perennial Ryegrass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.476 ounces per gallon
or
0.476 ounces per 1,000 sqft
CertainLabel™ Calculator for Sedgehammer 5% Halosulfuron-methyl & these grass types
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.
Blanket Treatment
Label Rate:
6.4 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 5000 square feet
at a cost of
$2.99 per 1,000 sqft
Safe On
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Fine Fescue, Kentucky Bluegrass, Kikuyu Grass, Perennial Ryegrass, Roughstalk Bluegrass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
6.4 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Ortho Nutsedge Killer Ready-To-Spray & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.016 - 0.032 ounces per gallon
Cost Effectiveness:
Makes 40.949 - 81.899 gallons
at a cost of
$0.82 - $1.63 per gallon
Blanket Treatment
per
Label Rate:
0.008 - 0.015 ounces per 1,000 sqft
Cost Effectiveness:
Covers 85800 - 171600 square feet
at a cost of
$0.39 - $0.78 per 1,000 sqft
Safe On
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Centipedegrass, Fine Fescue, Kentucky Bluegrass, Kikuyu Grass, Perennial Ryegrass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.016 - 0.032 ounces per gallon
or
0.008 - 0.015 ounces per 1,000 sqft
CertainLabel™ Calculator for Sedgehammer 75% Halosulfurion-methyl & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
2.5 fluid ounces per gallon
Cost Effectiveness:
Makes 9.6 gallons
at a cost of
$3.12 per gallon
Blanket Treatment
Label Rate:
4 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 6000 square feet
at a cost of
$4.99 per 1,000 sqft
Safe On
No safe on treatments listed. Please, review the label or contact the merchant for more information.
Ortho 0841010 Dial N Spray Hose End Sprayer
4,432
$
12.37
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 - 0.28 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 21818 - 65217 square feet
at a cost of
$1.07 - $3.21 per 1,000 sqft
Instructions:
Rates lower than 12 fl oz/acre (0.275 fl. oz/1,000 sq. ft.) will generally control sedges for at least 60 days. A rate of 12 fl oz/acre (0.275 fl oz/1,000 sq. ft.) will provide approximately 75% control for at least 60 days.
Good spray coverage is needed for optimum control of sedges. Temporary discoloration of some turfgrass species may result from use of surfactant. Use of surfactants is not recommended.
Safe On
Bahiagrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, and Zoysiagrass
Safe Rate:
0.18 - 0.28 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dismiss & these grass types
Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, and Tall Fescue
Safe Rate:
0.09 - 0.18 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dismiss & these grass types
Bentgrass
Safe Rate:
0.09 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dismiss & 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.
Blanket Treatment
Application Interval:
14 - 20 days
per
Label Rate:
0.075 - 0.23 ounces per 1,000 sqft
Cost Effectiveness:
Covers 34783 - 106667 square feet
at a cost of
$1.05 - $3.23 per 1,000 sqft
Instructions:
See green safe rates table to determine rates for specific turfgrasses. Two applications of Blindside Herbicide 14 to 20 days apart may increase control over a single application.
Safe On
Bermudagrass, Centipedegrass, St. Augustinegrass, and Zoysiagrass
Safe Rate:
0.15 - 0.23 ounces per 1,000 sqft
CertainLabel™ Calculator for Blindside & these grass types
Kentucky Bluegrass and Tall Fescue
Safe Rate:
0.075 - 0.15 ounces per 1,000 sqft
CertainLabel™ Calculator for Blindside & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.008 ounces per gallon
Cost Effectiveness:
Makes 147.654 gallons
at a cost of
$0.67 per gallon
Blanket Treatment
per
Label Rate:
0.017 ounces per 1,000 sqft
Cost Effectiveness:
Covers 72600 square feet
at a cost of
$1.36 per 1,000 sqft
Safe On
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Centipedegrass, Kentucky Bluegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, and Zoysiagrass
Safe Rate:
0.014 - 0.023 ounces per gallon
or
0.029 - 0.046 ounces per 1,000 sqft
CertainLabel™ Calculator for Certainty & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.4 - 1 fluid ounces per gallon
Cost Effectiveness:
Makes 640 - 1599.999 gallons
at a cost of
$0.12 - $0.30 per gallon
Instructions:
For use on golf courses, sod farms, and highway rights-of-way only.
Blanket Treatment
Label Rate:
0.4 - 1 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 640000 - 1599999 square feet
at a cost of
$0.12 - $0.30 per 1,000 sqft
Instructions:
For use on golf courses, sod farms, and highway rights-of-way.
Safe On
Kentucky Bluegrass, Perennial Ryegrass, and Tall Fescue
Safe Rate:
0.4 - 1 fluid ounces per gallon
or
0.4 - 1 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Target 6 Plus MSMA & these grass types
Bermudagrass and Zoysiagrass
Safe Rate:
0.4 - 2 fluid ounces per gallon
or
0.4 - 2 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Target 6 Plus MSMA & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
14.98 - 44.8 fluid ounces per gallon
Cost Effectiveness:
Makes 0.223 - 0.668 gallons
at a cost of
$194.61 - $582.18 per gallon
Blanket Treatment
Label Rate:
0.12 - 0.35 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 28571 - 85470 square feet
at a cost of
$1.52 - $4.55 per 1,000 sqft
Instructions:
Dismiss NXT Herbicide will control or suppress sedges (Table 3) when applied at a rate of 5.1 to 15.25 floz/acre (0.117 to 0.350 fl oz./1,000 sq. ft.). Apply the highest rate consistent with the rate needed for turfgrass safety in Table 1. Rates lower than 10.2 fl oz/acre (0.234 fl oz/ 1,000 sq. ft.) will generally control sedges for up to 60 days. Yellow nutsedge (Cyperus esculentus) is the most susceptible sedge species.
Safe On
Bahiagrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, and Zoysiagrass
Safe Rate:
0.23 - 0.35 fluid ounces per gallon
or
0.23 - 0.35 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dismiss NXT & these grass types
Fine Fescue, Kentucky Bluegrass, Roughstalk Bluegrass, and Tall Fescue
Safe Rate:
0.12 - 0.23 fluid ounces per gallon
or
0.12 - 0.23 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dismiss NXT & these grass types
Bentgrass and Perennial Ryegrass
Safe Rate:
0.12 fluid ounces per gallon
or
0.12 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dismiss NXT & 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 - 0.28 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 21780 - 65340 square feet
at a cost of
$1.00 - $3.01 per 1,000 sqft
Instructions:
Split applications give optimum control of purple nutsedge.
Safe On
Bahiagrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, and Zoysiagrass
Safe Rate:
0.18 - 0.28 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Sulfentrazone 4SC Select & these grass types
Bahiagrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, and Zoysiagrass
Safe Rate:
0.18 - 0.28 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Sulfentrazone 4SC Select & these grass types
Chewings Fescue, Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, and Tall Fescue
Safe Rate:
0.09 - 0.18 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Sulfentrazone 4SC Select & these grass types
Chewings Fescue, Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, and Tall Fescue
Safe Rate:
0.09 - 0.18 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Sulfentrazone 4SC Select & these grass types
Bentgrass
Safe Rate:
0.09 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Sulfentrazone 4SC Select & Bentgrass
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
4 - 7.9 fluid ounces per gallon
Cost Effectiveness:
Makes 12.152 - 24 gallons
at a cost of
$3.44 - $6.80 per gallon
Blanket Treatment
Label Rate:
4 - 7.9 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 12152 - 24000 square feet
at a cost of
$3.44 - $6.80 per 1,000 sqft
Instructions:
Multiple applications may be required. Second application must occur no earlier than 28 to 35 days after the first application.
Safe On
Bermudagrass, Buffalograss, Centipedegrass, Seashore Paspalum, and Zoysiagrass
Safe Rate:
4 - 7.9 fluid ounces per gallon
or
4 - 7.9 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Solitare WSL & these grass types
Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, Roughstalk Bluegrass, and Tall Fescue
Safe Rate:
4 - 6.5 fluid ounces per gallon
or
4 - 6.5 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Solitare WSL & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.75 - 1.5 ounces per gallon
Cost Effectiveness:
Makes 10.667 - 21.333 gallons
at a cost of
$6.69 - $13.38 per gallon
Blanket Treatment
per
Label Rate:
0.75 - 1.5 ounces per 1,000 sqft
Cost Effectiveness:
Covers 10667 - 21333 square feet
at a cost of
$6.69 - $13.38 per 1,000 sqft
Safe On
Bermudagrass, Buffalograss, Centipedegrass, Seashore Paspalum, and Zoysiagrass
Safe Rate:
0.75 - 1.5 ounces per gallon
or
0.75 - 1.5 ounces per 1,000 sqft
CertainLabel™ Calculator for Solitare & these grass types
Kentucky Bluegrass, Perennial Ryegrass, Roughstalk Bluegrass, and Tall Fescue
Safe Rate:
0.75 - 1 ounces per gallon
or
0.75 - 1 ounces per 1,000 sqft
CertainLabel™ Calculator for Solitare & these grass types
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:
4 lbs per 1,000 sqft
Cost Effectiveness:
Covers 500 square feet
at a cost of
$55.16 per 1,000 sqft
Safe On
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Centipedegrass, Fine Fescue, Kentucky Bluegrass, Kikuyu Grass, Perennial Ryegrass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
4 lbs per 1,000 sqft
CertainLabel™ Calculator for Vexis Granular & these grass types
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.
Blanket Treatment
Label Rate:
0.22 - 0.33 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 48400 - 73364 square feet
at a cost of
$2.42 - $3.67 per 1,000 sqft
Safe On
Bahiagrass, Bermudagrass, Buffalograss, Centipedegrass, Kikuyu Grass, and Zoysiagrass
Safe Rate:
9.5 - 14.4 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dismiss South & these grass types
Bahiagrass, Bermudagrass, Buffalograss, Centipedegrass, Kikuyu Grass, and Zoysiagrass
Safe Rate:
9.5 - 14.4 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dismiss South & these grass types
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.
Blanket Treatment
Label Rate:
0.09 - 0.28 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 29040 - 87120 square feet
at a cost of
$0.63 - $1.89 per 1,000 sqft
Instructions:
Split applications are recommended for optimum control of purple nutsedge. Apply 4 - 8 ounces per acre as an initial application followed by a second application when evidence of actively growing purple nutsedge is visible. DO NOT exceed the maximum rate per acre based on the turf variety as listed in table above on tolerant grasses
Safe On
Bahiagrass, Bermudagrass, Carpetgrass, Centipedegrass, Seashore Paspalum, St. Augustinegrass, and Zoysiagrass
Safe Rate:
0.18 - 0.28 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Sulfentrazone 4F & these grass types
Fine Fescue, Kentucky Bluegrass, and Perennial Ryegrass
Safe Rate:
0.09 - 0.18 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Sulfentrazone 4F & these grass types
Fine Fescue, Kentucky Bluegrass, and Perennial Ryegrass
Safe Rate:
0.09 - 0.18 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Sulfentrazone 4F & these grass types
Bentgrass
Safe Rate:
0.09 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Sulfentrazone 4F & Bentgrass
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
Label Rate:
0.008 - 0.012 ounces per gallon
Cost Effectiveness:
Makes 72.283 - 110.231 gallons
at a cost of
$2.78 - $4.23 per gallon
Blanket Treatment
per
Label Rate:
0.008 - 0.012 ounces per 1,000 sqft
Cost Effectiveness:
Covers 72478 - 109752 square feet
at a cost of
$2.79 - $4.22 per 1,000 sqft
Safe On
Bermudagrass and Zoysiagrass
Safe Rate:
0.008 - 0.012 ounces per gallon
or
0.008 - 0.012 ounces per 1,000 sqft
CertainLabel™ Calculator for Monument 75WG & these grass types
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.
Blanket Treatment
Label Rate:
1.1 - 1.47 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 217800 - 290400 square feet
at a cost of
$1.18 - $1.58 per 1,000 sqft
Instructions:
The lower rate is recommended for spring if spring transition is expected within a month. Higher rates may be used if spring transition is at least 4-6 weeks away or has already occurred and also for fall.
Safe On
Bermudagrass, Centipedegrass, St. Augustinegrass, and Zoysiagrass
Safe Rate:
1.1 - 1.47 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Coastal & these grass types
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.
Blanket Treatment
Label Rate:
1 - 6 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 53333 - 320000 square feet
at a cost of
$1.50 - $8.97 per 1,000 sqft
Instructions:
See green safe rates boxes for specific turfgrass rates.
Safe On
Annual Ryegrass, Perennial Ryegrass, and Tall Fescue
Safe Rate:
2 - 4 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Prograss & these grass types
Annual Ryegrass, Perennial Ryegrass, and Tall Fescue
Safe Rate:
2 - 4 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Prograss & these grass types
Bentgrass and Kentucky Bluegrass
Safe Rate:
1 - 1.5 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Prograss & these grass types
Bentgrass and Kentucky Bluegrass
Safe Rate:
1 - 1.5 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Prograss & these grass types
Seashore Paspalum
Safe Rate:
1 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Prograss & Seashore Paspalum
St. Augustinegrass
Safe Rate:
3 - 6 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Prograss & St. Augustinegrass
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
Label Rate:
0.032 ounces per gallon
Cost Effectiveness:
Makes 41.894 gallons
at a cost of
$0.00 per gallon
Instructions:
Heavy infestation requires sequential applications.
Blanket Treatment
per
Label Rate:
0.032 ounces per 1,000 sqft
Cost Effectiveness:
Covers 41894 square feet
at a cost of
$0.00 per 1,000 sqft
Instructions:
Heavy infestation requires sequential applications.
Safe On
Annual Ryegrass, Bahiagrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Chewings Fescue, Colonial Bentgrass, Fine Fescue, Hard Fescue, Kentucky Bluegrass, Kikuyu Grass, Perennial Ryegrass, Red Fescue, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.032 ounces per gallon
or
0.032 ounces per 1,000 sqft
CertainLabel™ Calculator for Sedgemaster & these grass types

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