Weeds can be a problem wherever desirable plants grow, be it in a flower bed, garden or lawn. Many who are at war with weeds choose to use chemical herbicides because they are so easy to use and work so well.
But here’s the thing: You have to know when to apply weed killers. What happens if you apply herbicides at the wrong time? At best, they won’t work very well. At worst, they can kill your desirable plants or lawn.
Knowing when to apply weed killer can mean the difference between victory and defeat in your battle against weeds. To prevent weeds from germinating, use a pre-emergent weed killer early in the spring, late in the spring and again in late fall.
To treat weeds that pop up here and there, use a post-emergent weed killer as and when needed. Get them while they’re young, if possible.