Can I Treat Weeds With Roundup® Weed & Grass Killer Products When It's About to Rain?
For best results, we recommend using Roundup® Weed & Grass Killer products on dry, warm, wind-free days. But if it’s about to rain, fear not — all of our products should dry and become rainfast within 30 minutes to 3 hours — some even faster.
The products below have a rainfast range of 10 minutes to 3 hours. Scroll down to a product to see the rainproof time.
Ideal Conditions
A wind- and rain-free day above 60° F helps speed up the drying of Roundup® Weed & Grass Killer products.
Weeds and Rain
Weeds love to sprout after it rains, which is why waiting for dry conditions is ideal. Waiting for rain-free days also ensures that Mother Nature won't wash away any of the product before it goes to work on the weed.
Landscape Weeds
ROUNDUP® READY-TO-USE WEED & GRASS KILLER III
Rainproof in 10 MINUTES.
Lawn Weeds
Roundup® For Lawns1 Ready-to-Use
Rainproof in 3 HOURS.
Concentrates
ROUNDUP® WEED & GRASS KILLER CONCENTRATE PLUS /
ROUNDUP® WEED & GRASS KILLER SUPER CONCENTRATE
Rainproof in 30 MINUTES.
Driveway & Patio Weeds
ROUNDUP® MAX CONTROL 365 PRODUCTS
Rainproof in 30 MINUTES.
ROUNDUP® EXTENDED CONTROL WEED & GRASS KILLER PLUS WEED PREVENTER PRODUCTS
Rainproof in 10 MINUTES.
Poison Ivy & Tough Brush
ROUNDUP® POISON IVY PLUS TOUGH BRUSH KILLER PRODUCTS
Rainproof in 30 MINUTES.
Recommended Products
(3 Recomended)
With Roundup® Weed amp; Grass Killer products, one application is usually all it takes to get rid of most pesky weeds.
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It depends on the Roundup® Brand Products you choose.
Roundup® For Lawns is so effective at killing weeds that you may find some bare spots in your lawn