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trussin_22

Poa Annua during bermuda's dormancy

8 years ago

Last winter, I had heavy poa annua growth during which I mulch mowed. The lawn was very green and I had to mow weekly (without supplemental irrigation). My bermuda did not seem to be adversely affected as it came out of dormancy, though perhaps poa delayed growth by shading the soil.

I'm in Central Texas and at the point when I need to apply a pre-emergent (which will likely be corn gluten meal). I don't know if CGM is effective for poa, which is by far the most extensive weed infestation on my lawn.

Since I mulch mowed poa last year, I'm doomed for additional crops in the coming years. However, the plant dies off as it warms, presumably leaving the soil slightly aerated as the roots deteriorate. Perhaps there's a further benefit of adding organic matter over winter with the additional mowing.

Is there any further benefit to a more relaxed approach with the poa, and following the same course this winter?

I'm afraid that waging war against this weed will require heavier methods than CGM.

Thanks for any opinions.

Will

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