Ortho WeedClear Lawn Weed Killer (North) (2024)

FAQs

How long does it take Ortho WeedClear to work? ›

This product takes a minimum of 3 weeks to completely kill weeds.

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. Thank you for your feedback!

Answer: You must wait at least 30 days to seed after applying weed controls. Seeding too soon after applying weed control can prevent your new seedlings from germinating.

It's rainproof 1 hour after applying it, and it kills over 200 weeds at their roots. Weeds also are notorious for showing up in hard-to-grow places like driveway cracks, between bricks, and through decks.

Time of Day: Spraying weed killer at the right time of day significantly impacts its effectiveness. Early morning or late afternoon are often the best times, offering optimal conditions for absorption and avoiding the harsh midday sun.

You want to choose a weed killer which has been engineered to kill the weed but not that the grass you have. Selective means it won't kill all plants it's applied to. 2,4-D is the more common selective herbicide. Using it properly has minimal risks and is extremely effective at killing weeds without killing your grass.

Glyphosate is one of the strongest weed killer chemicals available on the market. If you're hoping to achieve total weed control on your site and have some stubborn or excessive weed growth, using a product with this active ingredient is highly recommended.

The best means of controlling creeping Charlie is with a postemergence broadleaf herbicide. As with any pesticide, always read and follow label directions. The best choice for homeowners is a weed killer containing salt of dicamba (3, 6-dichloro-o-anisic acid) or triclopyr.

Sometimes, the lawn will recover, he says, but if it's really bad, you'll need to re-seed. “Some herbicides have a reseeding interval of several weeks,” he says, “so it's important to check the label before just throwing down seed after this type of incident.”

You will need to seed again, as there is not enough grass to fill the lawn in.

Should you overseed or weed control first? ›

If your lawn has a large number of weeds, then it might be in your best interest to tackle them first and worry about seeding later. This is especially true if you have a little time left in the primary grass sprouting season. Post-emergent weed sprays are less likely to disrupt seed germination and grass growth.

If the weeds are mature (have produced a seed head), then it is important to mow before the lawn is treated. This will cause the weeds in your lawn to want to grow faster and so when the products are applied to control them it can go to work almost instantly.

Cooler or fluctuating temperatures may slow weed control, but the product will still work. Although visible results may be seen after 24 hours, this product takes a minimum of 3 weeks to completely kill weeds.

Yes, you want your grass damp before applying a weed and feed product. You can either water the lawn briefly or use the product right after a rain. The leaves must be wet so the product sticks to the foliage and can start working. How soon can I water my lawn after applying weed and feed?

Weeds will begin to show signs of wilting and yellowing within 1 hour of the application under ideal conditions. Complete control may take up to 2 weeks. For best results, temperatures should be consistently above 60 degrees; nighttime temperatures below 40 will slow results.

Use Remedy and Surface Non-Ionic Surfactant It will take about 10 days to get the full effect, but the results are spectacular! See Clear Pasture, Triclopyr 61.6% for a more economical choice.

Wilting or yellowing will occur in 2 to 6 weeks. Hard to kill weeds may require a repeat application if regrowth occurs.