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Grassy Weed Control

Grassy Weed Control

Grassy weed control can be very difficult and require a lot of attention and preventative steps. It is important to distinguish these from broadleaf weeds.  Here are some characteristics that separate grassy weeds from broadleaf weeds:

  • long, narrow leaves
  • parallel running veins (do not form a net-like pattern)
  • no colorful or extravagant flowers
  • similar leaf shapes among species
  • seed heads tend to be more spiked and can help differentiate between species.

The first step, however, is identifying the type of grassy weed you have and then understanding how to treat and prevent it. There are 3 major types of grassy weeds: winter annual weeds, summer annual weeds, and perennial weeds.

  • Winter Annual Weeds
  • Summer Annual Weeds
  • Perennial Weeds.

Grassy Winter Annual Weeds

Characteristics

  • These weeds germinate in late summer and early fall.
  • They can survive through the winter and will aggressively grow in the spring and die off by late spring/early fall
  • Click here to see examples of some winter annual weeds

Examples Annual Bluegrass (Poa Annua)

Prevention

  • The most effective treatment of winter annual weeds prevention by using pre-emergent herbicides.  You want to apply this in late summer/early fall to prevent them from germinating.  Mulitple applications may be necessary because winter annual seeds can survive years without germinating.
  • Click here to for pre-emergent herbicides

Treatment

Grassy Summer Annual Weeds

Characteristics 

  • Germination begins early to mid-spring depending on your location.  These grassy weeds will flower throughout the summer into the early fall where they are killed off on with the first frost.
  • Produce seed in mid to late summer

Examples: Crabgrass, Goosegrass

Prevention

  • The most effective treatment for summer annual weeds is the same for winter annual weeds: prevention.
  • Apply pre-emergents in early to mid spring.  A good indication to when to apply is when the temperature is 50-60 degrees for about 1-2 weeks

Treatment

Grassy Perennial Weeds

Characteristics

  • Season-long life cycles.  The cycles will vary from species to species so it is very important to properly identify before treatment.
  • Vigorous, invasive growth habits.
  • Could be a desired grass in an undesired around such as unwanted bermudagrass in your zoysia lawn

Examples: Dallisgrass, Quackgrass, and Bermuda grass

Treatment

 

 

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  1. Dimension Ultra 40 WP

    For a more economical alternative, with Dithiopyr - 40%, compare: Quali Pro's Dithiopyr 40 WSB

    Dimension Ultra 40 WP is known as an excellent herbicide for pre-emergent and post emergent crabgrass control. It will also control other annual grasses and broadleaf weeds such as goosegrass, chickweed, Poa annua, and spurge for season-long control. According to its label, it will suppress or control 45 different broadleaf weeds and annual grasses. Dimension Ultra 40 WP as an over the top application label for nursery ornamental plants.

    Except for crabgrass control (up to tillering stage of development), this product should be used as a pre-emergent only. Use this pre-emergent herbicide prior to germination of target weeds in spring, summer or fall. Half inch or more of rainfall or irrigation is needed to activate Dimension Ultra 40 WP.

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  2. Prodiamine 65 WDG

    Prodiamine 65 WDG is a wettable dispersible granule ( WDG ) . As a pre-emergent herbicide, the versatility of Prodiamine 65 WDG allows applications both in spring and fall seasons for year long control .This Quali-Pro herbicide is particularly effective against many of the hard-to-kill grassy weeds such as crabgrass and annual bluegrass.

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  3. Dithiopyr 40 WSB

    Compare Dithiopyr 40WSB Herbicide to Dimension Ultra 40 WP, ( both contain Dithiopyr 40.0%). Dithiopyr 40 WSB is more economical.

    Dithiopyr 40 WSB is an excellent herbicide for pre-emergent control of crabgrass. Other important grasses include kikuyugrass, goosegrass, chickweed, annual bluegrass, barnyard grass, oxalis, ryegrass, spurge. See the product label for all the listed annual grasses and broadleaf weeds. It may be used on established turf, field-grown nurseries, golf courses, landscape ornamentals and more listed locations.

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  4. Agrisel Surflan Pro

    Starting at: $24.00

    Agrisel Surflan Pro-Oryzalin 40.4%

    Surflan Pro, with Oryzalin is a preeemergent herbicide used as a surface application on a wide spectrum of more than 100 different grasses and weeds found in ground covers, perennials, established warm-season turfgrass, ornamental plantings, non-bearing trees, non-cropland, industrial sites and Christmas tree plantations.

    Surflan Pro and be used alone or a tank mix combination with glyphosate to provide post emergence control of labeled weeds.(Do not spray tank mix with glyphosate over the top of ornamental plants, trees, foliage and other desirable vegetation.

    Surflan Pro will remain stable on the soil surface up to 21 days after application. If there is no rainfall, use irrigation to activate Surflan Pro.

    Since Oryzalin is an orange color, Surflan Plus may cause temporary discoloration of sprayed areas. Don't spray concrete or wood. Wear gloves when mixing and applying.

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  5. Surflan AS -2.5 Gallons

    Effective pre-emergent seed and weed control on a broad spectrum of weeds and grasses. Standard rate-Turf Grass - Apply now in early spring up to summer, prevents weeds from germinating. Tank can be mixed with any glyphosate, kills weeds on top of ground and prevents weeds from germinating. Please be careful with glyphosate(same active percentage as Round Up) with anything green as Glyphosate will kill it. It will take 1.5 - 2 quarts of Surflan to treat an acre for turf grass( 1.5 oz / 1 gallon of water , See label for complete instructions). Applications will vary based on the rate used during the treatment. For long growing warm regions, a stronger rate will provide a longer window of protection. At the low rate, you can expect 2-4 months of residual. Higher rates can yield 6-12 months of activity. Do not reseed for 90 - 180 days following application as seed germination may be negatively affected.

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  6. Sureguard Herbicide- 5 lbs

    Starting at: $740.50

    Out of stock

    SureGuard Herbicide - Long Lasting

    SureGuard Herbicide is a pre and post emergent herbicide for a broad spectrum of grassy and broadleaf weeds for landscape weed control. It keeps the weeds away from trees and shrubs in ornamental beds. It also may be used as a bare ground (soil sterilant) herbicide that lasts up to 8 months. As a pre-emergent herbicide, it provides suburb, long residual control of tough weeds such as spurge, bittercress, oxalis, common groundsel and crabgrass. Not only is it long lasting, but has very low use rate; I lb covers up to 2 acres.

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  7. Dithiopyr L Herbicide

    Dithiopyr L Herbicide (generic Dimension EW herbicide) from Quali-Pro is a pre-emergent and post-emergent herbicide for control of both grassy and broadleaf weeds in established turf and ornamentals. Its low mix rate and non-staining formulation make it a great alternative to prodiamine Learn More
  8. Dimension 2EW Herbicide

    Starting at: $167.50

    Dimension 2EW Herbicide with Dithiopyr 24% is speciality pre-emergent and early post-emergent herbicide for weeds such as crabgrass. Because it works as a pre-emergent and early post-emergent Dimension 2EW is the perfect choice for those parts of the country where the weather can be unpredictable. As a water based herbicide, Dimension 2EW Herbicide can be used over the top of field and container-grown nursery and landscape ornamentals, and in established lawns, golf course fairways, roughs and tee boxes, and commercial sod farms.

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  9. Hi-Yield Weed and Grass Stopper -12 lbs #33030

    Starting at: $17.15

    Hi-Yield Weed and Grass Stopper (contains Dimension Herbicide) Learn More
  10. Ecomazapyr 2SL

    Starting at: $59.95

    Allligare's Ecomazapyr 2SL with Imazapyr 27.8% can be compared to BASF's Arsenal 2 lb formula. It provides preemergent and post emergent control with residual action on listed weeds. Ecomazapyre 2 SL is labeled to control undesirable vegetation in grass pasture and undesirable emergent and floating aquatic vegetation; perfect for transitional areas between aquatic and terrestrial sites. It may also be applied as basal bark and stem procedures in noncropland areas.

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