Q. What is better to use to control Bermuda grass invading the shrub border, Round-up or Poast? 

A. Round Up kills the Bermuda grass quicker but it also will kill most types of shrubs or flowers if it gets on the foliage. Poast is slower to act but only kills grasses. As it gets cooler you have to move relatively fast to control the Bermuda grass, it is going dormant.  Whichever product you use follow the label instructions. 

Weekly columnist Calvin Finch has a Ph.D. and is a retired Texas A&M Horticulturist. Send questions to calvinrfinch@gmail.com.

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