The main grassy weed we have is Bermuda grass. Bermuda grass is a
perennial, meaning the plant begins growing from the existing plant and roots
each season--not from seed. Pre-emergent products only work on annual plants
that are germinating from seed. A pre-emergent herbicide inhibits the seed from
germinating, thus giving you no weed. It doesn’t work on perennials. Now that
the weather has cooled off, try to eradicate as much of the grass out of your
flower beds as possible. Mulch to keep it at bay. Next spring, as your plants
begin growing, watch for grass problems. If caught early enough, they can be
hand weeded, or there is a grass-specific herbicide on the market. Poast,
Grass-b-gone or a similar product, makes short work of grass removal. It doesn’t
harm your other plants. It also won’t kill other non-grassy weeds.
My flower beds were overrun by grass this summer. It was so hot, I didn’t
pay enough attention to weeding. I see the ads for pre-emergent herbicides and
was wondering if that would work in my flower beds next year. I don’t want to
damage my flowers and shrubs, but I do need help with the grass.