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Sunday - May 15, 2011

From: Schertz, TX
Region: Southwest
Topic: Grasses or Grass-like
Title: Keeping Bermuda out of Native Turfgrass
Answered by: Stephen Scace


We live on zip code 78154. Sadly our yard has bermuda grass–we are using solarization to kill the bermuda and plant seeds of buffalograss/bluegrama/curly-mesquite. All the neighbors have bermuda and I am not sure how to kept the bermuda seed out of my yard after I plant the new native grasses seeds. Do you have any suggestions? It will be terrible that after all work we see bermuda growing in our yard again. Thank you.


Mr. Smarty Plants agrees it would be terrible, and so he is very happy to pass on what he has seen in the Wildflower Center's research lawns. The idea here is to stack the deck in the natives' favor.

First, of course, you should be very thorough with your efforts to remove your existing Bermuda lawn. Root nodes that remain in your soil would likely be even more bothersome than wind-borne seeds from next door.

Second, seed your new native mix lawn heavily. The denser your new stand of grasses, the harder it will be for unwanted seeds to get started. 

Third, water as little as possible. Mr. Smarty Plants has seen for himself that one of the most weed-free patches of native turf mix grass in our research area was one that had been abandoned after the project ended. Bermuda needs more water than the native mix, so watering less frequently gives the native grasses a competitive advantage.

Fourth, mow tall and infrequently. Bermuda needs sun, so much so that it thrives best when kept at 1.5 inches, while the native mix does best at three to four inches, or even more. The taller native mix forces the Bermuda to grow leggy and thin, up and over the turf, where it is easy to find and remove.

Finally, be diligent in caring for your lawn. Look at it closely and often. Mr. Smarty Plants likes to do this early while the morning is still sweet and cool, and the doves are just waking to call to each other, or in the long summer evenings when shadows finally stretch out and the colors return to the landscape; ah yes, to roll on the lawn with tall cold drink and hunt down the straying, unwelcome Bermuda grass stolons and pluck them out mercilessly–what better way to wind down from a stressful day?


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