Dear Richard,

It's also common to have multiple type of plants in one zone. Usually, it's recommended to use the plant that needs most of water. For example, you have grass, trees and annual in a zone, it's better to use "grass" as you set. This is because other plant types can survive with more water, but your grass could die without enough water. One exception is Xeriscape, which could die with more than enough water.

Thanks,

Netro Support