My climate is Dallas. I run full automatic (flex daily) - I don’t manually adjust anything all year long.
One of my zones is exclusively buffalo grass. If it were not for fire concern, I’d never water it. It’s a grass that thrives on neglect (watering).
To keep it from going brown in the middle of the summer, I’ve learned it needs to be watered once every 3 - 4 weeks.
There’s no grass related zone type that allows for this infrequent of watering, that I’m aware of. You have to use ‘trees’ as the zone type.
My other settings are Rotor head Spray Head, Clay Loam Soil Type, Mostly shade Exposure, Flat Slope, 0.2 Available Water (default), 25 In. Root Depth (default), 90% Allowed Depletion, 70% Efficiency (default), 75% Crop Coefficient (default), and 1 in. Nozzles Inches Per Hour (default).
If there’s no rain, these settings will put down a good amount of water about every 28 days. It takes a good part of the day for this zone because of soaking time delays.
If anyone knows how to water about every 28 days with a grass Zone Type, I’d value the learning.
If not, then I’d suggest Rachio enhancement to include zone types more specific than ‘warm’ or ‘cool’ grass. Like ‘Buffalo grass’ (little water needed) and ‘St. Augustine’ (lots of water needed) and ‘Zoysia’ (not a lot of water needed).