Some weeds, in fact, are propagated when pulled by hand. Examples include field bindweed, the rubbery-leafed purslane, quackgrass and dandelion. Before selecting an herbicide, you must know the weeds you have and whether they are annual or perennial. You also need to consider their proximity to desirable plants. Take care to avoid drift if you have trees or shrubs in or adjacent to the lawns.
Spot treat problem weeds rather than broadcast applications to the entire lawn.
Because it can leach into the root zones of trees and shrubs, this product should be used sparingly as a spot treatment, wetting only the foliage of the weeds. The fumes alone can injure your plants. Several products on the market are labeled specifically for this purpose. They usually contain dachtal or surflan. Be sure to follow all label directions to avoid injury to your vegetables.