I made my own that used irrigation valves with a Zooz Zwave dry relay, with Home Assistant to control it. It was a giant pain to find and get everything hooked up right but afterwards it works well.

I’ve since found some zigbee-based irrigation valves in AliExpress that I’ll try out this summer. I think they’re about the same price as what I built per valve (considering all the parts and the time needed). I haven’t had a chance to try them yet as I got them at the end of last summer but they worked well in testing.