Undesirable grass invading flower beds
Please identify this type of grass. It has appeared this year in a part of the garden where it was previously not a problem. It has now invaded a long flower bed (300 feet, dedicated to marigolds, at lawn edge) and has almost completely taken over the bed. I am now removing all parts of it as soon as possible because it is going to seed. It's also beginning to invade the lawn, and appears to easily outcompete and smother the existing grass. Any tips on managing this would be most welcome.
Wayne County Pennsylvania
This looks like (and behaves like) crabgrass, which as you can see can quickly grow right over the plants around it. You are wise to weed it out and not allow it to go to seed.
It is a summer annual that starts growing in early spring. They are much easier to pull when they are small. The most common way to prevent it is to use a pre-emergent in the spring.
Here is our page about crabgrass: http://www.extension.umd.edu/hgic/crabgrass
Thank you for your prompt reply, and the link was very helpful.
A great service - thank you!