Ortho Weed B-Gon Lawn Weed Killer + Crabgrass Control (2024)

FAQs

How long does it take for Ortho weed B Gon to work? ›

This product takes 2-4 weeks to completely kill weeds.

Price/Ea. This item has been discontinued by the manufacturer. Please see Ferti-lome Weed Free Zone for an alternative.

Our top pick, Preen Crabgrass Control, combines both pre-emergent and post-emergent ingredients to prevent crabgrass seeds from sprouting and kill crabgrass that's already emerged. It's also safe for most common types of turf grass, including St. Augustine.

Mesotrione. Mesotrione (Tenacity) is a systemic postemergence herbicide for control of crabgrass, goosegrass, barnyardgrass, and yellow foxtail. This herbicide can also control several species of broadleaf weeds, as well as creeping bentgrass, nimblewill, and nutsedge in turf.

Our top choice for eliminating weeds is Spectracide Weed and Grass Killer Concentrate. It can be used in a variety of areas around your property, such as flower beds, sidewalks, and even around shrubs, delivering visible results in just a few hours.

TO APPLY [icon] • Spray when weeds are actively growing. Spray when temperature is below 90°F. Hard to kill weeds may require a repeat application in 2 to 3 weeks. Rain or watering 6 hours after application will not wash away effectiveness.

You should wait to mow for 24 to 48 hours post treatment. This is because it takes at least 24 hours for broadleaf weed control to translocate throughout the vascular system of the plant. If you cut the grass too soon, you're not letting the herbicide get into the plant.

Weed Stop and Xtract are long lasting weed killers and form a protective barrier in the soil which prevents most new weeds from emerging for up to 9 months after application. Use this product where total weed control is required and maintaining bare ground weed is desirable.

Herbicidal soaps are also popular Roundup alternatives that use fatty acids to kill weeds. Corn gluten meal can also kill grass weeds and broadleaf weeds.

What is best alternative to weed killer? ›

A solution of vinegar, salt and dish soap can be a cheap and effective tool against weeds. Even in the best of plots, weeds will grow. And why wouldn't they? You've provided inviting soil and the sun shines on even the most reviled plant.

Pre-emergents work by inhibiting seed germination and root development so that seeds can't become established plants. Highly effective preventers such as Pennington UltraGreen Crabgrass Preventer plus Fertilizer III 30-0-4 control crabgrass and other germinating broadleaf weeds.

Pre-emergent weed killer is the most effective and economical tool in the struggle with crabgrass. Pre-emergent herbicides interrupt the growth process, preventing complete germination. In other words, pre-emergents prevent crabgrass seedlings from ever seeing the light of day.

The safest and most effective way to kill crabgrass is by using gardening vinegar. Gardening vinegar, which is stronger than household vinegar, will put crabgrass down in 24 hours. Fill a spray bottle and spray the weed thoroughly with the vinegar.

Kills Dandelion, Chickweed, Knotweed, Plantain, Henbit, Spurge and many other broad leaf lawn weeds.

You need a bit of patience here. You'll usually see weeds curl up and die 7 to 14 days after they're treated. But some weeds take longer to disappear than others. Some tough customers really hang in there — some for as long as a month or longer.

The product produces visible results in 5 hours. This product kills broadleaf and troublesome grass weeds including dandelion, chickweed and clover as well as crabgrass, foxtail and yellow nutsedge, see product label for complete list of weed types.