Rosemary Care and Pruning
I have two established Rosemary plants planted in ground near pond. I realize after viewing your web site I have watered too, too much. How should I go about trimming back the growth that looks dead. I will turn off drip system to plants for now. Zone is central Arizona.
Certified GKH Gardening Expert
Rosemary shrubs normally do not respond well to rejuvenation pruning. That being said, be aware that there is a chance you will lose the shrub, which is possible anyway due to the overwatering. This article should help you with that: https://www.gardeningknowhow.com/edible/herbs/rosemary/pruning-rosemary.htm
In the event that the plant does not make it, you may want to take a few cuttings in order to start new plants. This article will help with that: https://www.gardeningknowhow.com/edible/herbs/rosemary/how-to-propagate-a-rosemary-plant.htm