Pendimethalin can be used on all Kansas lawn species except which?

• A. Bentgrass.
• B. Bermudagrass.
• C. Zoysia.
• D. Tall fescue.

Answer: (A)

Pendimethalin works as a preemergent herbicide, creating a barrier that prevents germinating weed seeds from emerging by disrupting cell division in the developing shoots. It’s labeled for use on a wide range of Kansas lawn species, including bermudagrass, zoysiagrass, and tall fescue, making it a versatile option for many turf types. Bentgrass, however, is particularly sensitive to pendimethalin, and this turf is not listed for use with the product. Because of that sensitivity, applying pendimethalin to bentgrass can cause injury or discoloration, so the species that cannot safely receive pendimethalin is bentgrass. If bentgrass is present in a Kansas lawn, an alternative preemergent should be chosen.