Ortho WeedClear Lawn Weed Killer (North) (2024)

FAQs

How long does Ortho WeedClear weed killer take to work? ›

RESULTS IN HOURS: This weed killer is rainproof in 1 hour and delivers visible results in hours, after just one application.

Works on a lot of weeds, but can't use it when it get above 80 degrees, it will kill your grass. Used this for the first time this year. It did a pretty good job on dandelions but not really much else but it does kill a pretty decent variety of weeds. was disappointed it did not kill crabgrass.

Southern Ag Amine 24-D Weed Killer is the best weed killer for lawns. It targets broad-leafed plants so it won't kill your grass. You can safely spray this over your lawn without worrying about killing your lush green grass. This concentrated solution goes a long way.

You can kill weeds without harming your lawn* with Ortho® WeedClear™ Weed Killer for Lawns Concentrate. This weed killer kills over 250 common weeds, including dandelions, clover, poison ivy, sumac, chickweed, and dollarweed (see product label for complete weed list).

Many companies that use these chemicals warn that people should stay away from sprayed surfaces for six to 24 hours.

It's rainproof 1 hour after applying it, and it kills over 200 weeds at their roots.

Ortho Ground Clear is as good as Roundup in terms of killing weeds. However, it is known to be the more harmful of the two because it contains both glyphosate and imazapyr. These chemicals can be quite dangerous to the environment and the user who's in contact with it regularly.

A: The major difference is this product is intended to be used on southern grass lawns only and the orange cap version is for northern grass type lawns. Helpful?

Some of the best chemicals for pre-emergent weed control include trifluralin, bensulide, DCPA, dichlobenil, oryzalin, and simazine. These are the active compounds that lawn companies use to kill weeds before they germinate.

For warm season turfgrass, Certainty, Sedgehammer, Celero, or Monument herbicides are effective. For resistance management and improved control, mix the aforementioned herbicides with Dismiss and/or Basagran T/O herbicides. For cool season turfgrass, Sedgehammer, Dismiss, or Basagran T/O works well.

What kills weeds permanently in grass? ›

To kill weeds, some amateur gardeners recommend combining salt, soap and vinegar. The gardening pros ahead their thoughts on this method. They said: “Together, these household items create a potent mixture to eliminate weeds to ensure they won't come back.

For best control, herbicide should generally be applied in September or October, and current recommendations for systemic broadleaf herbicides are to withhold mowing at least 2 days before or after an application.

Helpful? A: Pets such as cats and dogs should be removed from the area before applying Ortho Groundclear Weed and Grass Killer. Pets should stay out of treated areas until it is thoroughly dry.

Just as horticultural vinegar can be used to kill weeds on driveways, patios and walkways, it also kills poison ivy. To use, simply put the vinegar in a spray bottle, and use at full strength. Horticultural or industrial vinegar is a great way to kill poison ivy naturally.

You'll start to see results in only 24 hours. The formula is rainproof in 2 hours and kills to the root. Trust Ortho Groundclear Poison Ivy & Tough Brush Killer to take out tough weeds.

The best time of year to use weed killer is Spring, followed by Fall. Spring is an effective time for catching weeds in their pre-growth season, in order to prevent them from sprouting. Fall is similarly effective because, ahead of the Winter, this is when weeds are most vulnerable.

It is usually best to wait 24 hours before watering the grass following an application that contains weed control. Also make sure that within 7 days of the application the product has been watered into the soil either by rain or sprinkler to ensure the best results.

Your lawn will benefit from the lawn treatment and the proper frequency of mowing. If it is possible to avoid mowing 24-48 hours before and after a scheduled treatment, then we recommend doing so. Either way, just be sure to leave the clippings on the lawn for at least one mowing following a treatment.

For many herbicides, any amount of rainfall soon after spraying has the potential to reduce absorption, translocation, and subsequent weed control. If you apply herbicide and it rains before it's rainfast, herbicide performance will be reduced.

Granular weed killers should be applied when grass is damp and should not be watered for 48 hours after application. The dampness of the grass ensures the granular weed killer will "stick" to the leaf. Water applied too soon after application can wash off the weed killer before it can be absorbed.

What happens if it rains after weed killer? ›

Yes, rain affects herbicide efficacy because rainwater simply washes it away from the surfaces that need treatment. This is why it is not advised to spray weeds when it's raining or right before it's about to rain.

Glycosulphate is the strongest weed killer chemical on sale, but most gardeners won't need a product this strong as more targeted chemicals are nearly as effective.

Ortho® Weed B-gon™ Lawn Weed Killer Ready-To-Spray + Crabgrass Control kills crabgrass, dandelions and other listed common lawn weeds to the root! When used as directed, you can kill over 200+ weeds without damaging your lawn. It starts working immediately!

Be sure the daytime temperature is above 45 degrees and below 90 degrees Fahrenheit when applying, and wait an hour after application to water your lawn. Most weeds will show signs of wilting or yellowing of new growth within 24 hours of application.

Although this herbicide can be applied in the spring, summer, or fall, applications in the summer tend to be less effective. Under adequate soil moisture conditions, spring and fall treatments tend to offer best results.

For the best results, apply when weeds are small and actively growing in the spring or fall, and when daytime temperatures are between 45 and 90 degrees. Following application, bare spots may be seeded after 4 weeks.

Ortho, Gallon, Groundclear Complete Vegetation Killer, Kills Weeds and Grasses and Prevents New Growth For Up To 1 Year, Use On Driveways, Patios, Walks and Fencerows, Can Now Be Applied With A Tank Sprayer, Contains 5% Glyphosate and . 08% Imazapyr.

In fact, TruGreen uses the weed killer glyphosate (Roundup), which is identified by IARC of the World Health Organization as probably carcinogenic.

The TruGreen® TruNatural®Lawn Plan uses 100% natural fertilizer that encourages healthy grass growth. This all-natural way to care for your lawn does not use traditional weed control.

Some of the best chemicals for pre-emergent weed control include trifluralin, bensulide, DCPA, dichlobenil, oryzalin, and simazine. These are the active compounds that lawn companies use to kill weeds before they germinate.

How long does Ortho Clover killer take to work? ›

Ortho Weed B Gon Chickweed Clover & Oxalis Killer For Lawns can take a few weeks to kill target weeds, depending on the type, age and health. Repeat treatment may be needed at 2-3 weeks after first treatment.

Some herbicides need a dry, rain-free period of up to 6 or 8 hours for the solution to soak in, and these requirements should be indicated on the package. Other stronger brands like Roundup only need 30 minutes on the leaves to be effective, and rainfall after that time won't stop the product from working correctly.

This is why most weed killers are designed to evaporate within 24 to 78 hours. This means that for the most part, it is safe to plant anything, edible or non-edible, in a place where you have sprayed weed killer after three days. If you want to be extra sure, you can wait a week or two before planting.