Bulbs
Flower Basics
Flower Beds & Specialty Gardens
Flower Garden
Garden Furniture
Garden Gnomes
Garden Seeds
Garden Sheds
Garden Statues
Garden Tools & Supplies
Gardening Basics
Green & Organic
Groundcovers & Vines
Growing Annuals
Growing Basil
Growing Beans
Growing Berries
Growing Blueberries
Growing Cactus
Growing Corn
Growing Cotton
Growing Edibles
Growing Flowers
Growing Garlic
Growing Grapes
Growing Grass
Growing Herbs
Growing Jasmine
Growing Mint
Growing Mushrooms
Orchids
Growing Peanuts
Growing Perennials
Growing Plants
Growing Rosemary
Growing Roses
Growing Strawberries
Growing Sunflowers
Growing Thyme
Growing Tomatoes
Growing Tulips
Growing Vegetables
Herb Basics
Herb Garden
Indoor Growing
Landscaping Basics
Landscaping Patios
Landscaping Plants
Landscaping Shrubs
Landscaping Trees
Landscaping Walks & Pathways
Lawn Basics
Lawn Maintenance
Lawn Mowers
Lawn Ornaments
Lawn Planting
Lawn Tools
Outdoor Growing
Overall Landscape Planning
Pests, Weeds & Problems
Plant Basics
Rock Garden
Rose Garden
Shrubs
Soil
Specialty Gardens
Trees
Vegetable Garden
Yard Maintenance
Herbicides to Control Quackgrass
Herbicides to Control Quackgrass. Particularly difficult to eradicate, quackgrass invades crops, such as corn, wheat, alfalfa and vegetables, and is also a nuisance weed in turf grasses for lawns and landscapes. Growing from early spring to late fall to a height of 3 feet tall, quackgrass forms a densely matted root system that can make planting...
Particularly difficult to eradicate, quackgrass invades crops, such as corn, wheat, alfalfa and vegetables, and is also a nuisance weed in turf grasses for lawns and landscapes. Growing from early spring to late fall to a height of 3 feet tall, quackgrass forms a densely matted root system that can make planting difficult, if left unattended. Along with planting clean seed and practicing cultural controls, such as manual removal of the plant, several herbicides are available to control or completely eradicate this tough and noxious weed.
Glyphosate
Glyphosate is a broad-spectrum systemic herbicide that will attack and kill quackgrass. For this herbicide to work well the grass should be actively growing and green and is particularly effective for pre-planting clearing of soil of post-emergent quackgrass. Use glyphosate carefully around other plants, as this herbicide is very non-selective and can kill desirable plants on contact. If necessary, use a paintbrush to brush on glyphosate in garden settings for a greater level of control. Multiple applications may be necessary, as quackgrass may grow back from unaffected rhizomes after glyphosate degrades.
Fluazifop
Fluarifop is a selective herbicide that can be used more safely on quackgrass, especially around non-fruit bearing perennial plants, vines, shrubs and trees and certain vegetable crops, according to the University of Minnesota. This herbicide is best applied during a dry period on young quackgrass plants. Multiple applications may be required to eradicate the grass completely.
Sethoxydim
For treating quackgrass in alfalfa and other legume plantings, sethoxydim may be effective. This herbicide should be applied when quackgrass is young and still under 8 inches tall. Applications should not be performed within seven days of livestock grazing in a treated area or harvesting forage, or within 20 days of cutting hay from the area. Secondary treatment may be required for full control.
Sulfosulfuron
Sulfosufuron is a selective turf herbicide rated for the control of several perennial weeds, including quackgrass in lawns and plantings of certain crops, such as wheat or switchgrass. The herbicide is applied to post-emergent quackgrass in the fall and spring to suppress or control the weed, although it usually is not completely eradicated. Typically, sulfosulfuron provides 80 to 90 percent control.
