Will Herbicides Work in Cold Weather?

Applying Herbicides in Cold Weather
Ineffective herbicide burndown applications due to cold weather are more common when nighttime temperatures dip below 40°. ... Cold weather also slows weed growth and hardens cell walls. This affects uptake of the herbicide to the weed which can lead to reduced weed control.

How cold is too cold to spray weeds?

Our general suggestion is to avoid applying herbicides when nighttime temperatures are below 40 degrees. Allowing for several days of warmer weather prior to application may result in more effective control than applying on the first warm day.

How cold is too cold for Roundup?

While you may wonder if it's too cold to spray those weeds, according to the manufacturer the ideal temperature for applying Roundup is between 53 and 77 degrees Fahrenheit.

Alexander Ross

Alexander Ross

Gaming, Esports & Interactive Media Writer

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.