Bermuda grass in lawns & gardens
Bermuda grass is a common weed in many Colorado lawns. It is frequently confused with crabgrass because their seed heads are similar.
Bermuda grass can develop from seed, but is usually spread during the winter through runners from other plants. Runners allow this weedy grass to spread rapidly through gardens and lawns. These underground runners can be several feet long and put down roots every few inches to produce a new plant. Each plant develops runners and produces seeds.
Garden areas invaded by Bermuda grass can be sprayed with an herbicide containing fluazifop, like Grass-B-Gone. This herbicide kills only grass, and is most effective when applied while grass is small. It can be sprayed over shrubs and flowers beginning in the early spring when Bermuda grass starts to thrive. Numerous applications over several years are usually needed for control.
Products containing the herbicide glyphosate can be used to treat Bermuda grass in lawns and spot treat Bermuda grass in gardens. Glyphosate is a non-selective herbicide, which means it will kill most plants. It is absorbed by leaves and other green portions of the plant and moves into the roots several inches. Bermuda grass may continue to grow from deep roots in areas treated by this herbicide that receive water and fertilizer. When new growth appears, it will again need to be treated. Treatments may be necessary for two or three years before Bermuda grass is eliminated.
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Updated Tuesday, July 22, 2014