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iOS: Try Homebridge to expose your devices to Apple Home. Works kinda nice, but requires a local computer up and running 24/7 (I use my Mac Mini, but a Raspberry Pi should do well, too), plus needs caretaking every now and then, and setting up watering schedules is not at all comfortable. But if you have some time left and always wanted to learn more about NodeJS operated stuff, you should give it a try.
We can of course hope for Orbit to start supporting Matter one day. Not sure if their current devices could handle that though.