Watering of drought-tolerant plants until established
I am having difficulty knowing how much to water drought-tolerant plants, in particular Pink Rockroses (cistus skanbergii). I planted them in the spring, along with several other drought-tolerant plants. Most of the other plants are fine, but the rockroses are dying, and I cannot determine if I am overwatering or underwatering. I have read that drought-tolerant plants can easily be overwatered. At the same time, I have read that I need to keep them moist until established. I was watering them deeply about once a week in the hot summer, but now that the weather has cooled, should I cut back on the water? They are far from established...they have not grown at all since I planted them, and a lot of the green leaves have yellowed. Help, please.