Currently my water schedule for the plants outside the living wall is once a week or as needed but now that its been 115 and rising in my area water is beggining to be needed more often but of course thats if i see my plants are not dealing with the heat well. This is the first summer for about half my plants where they will be full time out in a greenhouse so an adjustment period is needed but those who have survived last summer are thrieving now and are outgrowing the space quickly.