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
Could you please let us know which zone is newly planted and we can help check the smart zone settings for you.
Thanks,
Netro Support
The customized mode may not meet your watering needs. We suggest creating programs for your zone 1 to water for 15 mins four or five times.
Thanks,
Netro Support
If you want to create a program for zone 1 to water for 15 mins four times, you will have to create 4 programs.
For example, program 1: select zone 1 to water during 5:00~5:15.
Program 2: select zone 1 to water during 5:20~5:35.
Program 3: select zone 1 to water during 5:40~5:55.
Program 3: select zone 1 to water during 6:00~6:15.