I live in central South Carolina and have Centipede grass, which requires more water than normal in summer, and has shallow (6") roots, but which turns brown and goes dormant in the winter. It’s starting to turn now (we had a 31 degree night time temperature last night).
It is normally accepted by homeowners here (not landscapers or horticulturalists, but homeowners) that no irrigation is necessary in the winter. Grass is supposed to be tan/brown anyhow, right? Plus, SC usually gets a good amount of precipitation in the winter. But I’m reading some sources that indicate that during dry periods, even in winter, it is best to irrigate some. Well, the last rain we had was 5 days ago, there’s no rain forecast for 6 days, and not much then.
So, should I water? I use Flex Daily and like it, but can’t imagine putting down almost a half inch of water at once like I do in the summer. I was considering reducing my root depth to result in less water, maybe to half or even a fourth of it’s normal value. But with the ET running about .05 to .06, a fourth would water every other day, and that really seems like too much/often. People are going to think I’m crazy. I’ve also considered halving my Crop Coefficient so as only to require half the water. I don’t know. Right now I’m watering everything with 0.1" water manually because my graph says it’s down to 17%.
For those living in similar climates with grass that goes dormant, do you water during winter? What are your thoughts? IF I’m going to water at all, I like the idea of letting Rachio handle it; just not sure what to change for this non-standard applications.