You can cut off the dried blooms and dead areas. A light shearing into green shoots followed by some watering and fertilizing will promote fresh new growth. The plants may be suffering from spider mites, a common problem in hot dry conditions. If you do have mites a spraying may be in order with an appropriate miticide. Mites tend to decline in numbers in the fall so repeated spraying may not be needed.
Thanks for the question. Please stop in again soon!
Q&A Library Searching Tips