Hi Bruce,

Netro also has "new plant" mode and please go settings->zones->specific zone number->smart zone-enabled->Mode.  You can check if this mode meet your watering needs. You can also choose "customized" mode to adjust watering by providing the preferred moisture level and flow rate of your sprinklers. 

Also, you can create programs to make sure Netro water your zone for 15 minutes multiple times.

Thanks,

Netro Support