Q:

When should pre-emergent weed care be applied?

A:

Quick Answer

Pre-emergent weed herbicides are the first line of defense against weeds and should always be applied as early in the season as is reasonable. As their name connotes, pre-emergent weed killers are meant to be applied well before weeds begin to appear.

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Full Answer

To determine the best time to use pre-emergent weed treatments, a person should examine his lawn or garden to see when weeds typically appear and apply the pesticides two to three weeks prior to that date the following growing season. Once a garden has already been planted and weeds have appeared, it is too late to use pre-emergent herbicides and other weed control methods must be used.

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