I have just installed a low cost scheme to modify an existing irrigation system to make it controllable under Vera using Z-Wave. Info contained in attached PDF. $20 to do the whole thing.
This is exactly what I was looking for instead of buying Etherrain or IrrigationCaddy.
If I understand this correctly you don't touch the Toro timers at all via Vera. You control the valves via Power on or off from Z-wave. So if Power is off the valve doesn't water but Toro will say please water and it is completely unaware of the valve not functioning as it is powered off unless you tell it otherwise.
Do I get this right?
Vera 3, RFWC5AW, 2 x LFM-20, FS20Z, 3 x YRD220ZW619KWKD, 2 x FI9826W, FI9828P, 2 x NEST Gen2, EVL-3CG, 11 x BR30, 3 x A19 Hue, Media Srv, 18 x ZW4004, 8 x ZW3003, 12 x ZW2002, IP2IR Cache, 2 x DSC24, ZWN-SC7, 4 x PIR-ZWAVE2, DSB05-ZWUS, RS100-HC, ECO-TILT-US, Ribu1C, 3 x GE12721, 2 x Echo, ZW078-A