Are you able to send new photos, please? The current set are too small for us to enlarge to see any detail, and there also appears to be a color filter on the images that makes them too sepia-toned for us to determine if any foliage is discolored as an important symptom for diagnosis. Do you know what the plants are? This also helps with diagnosis. They appear to be a Rhododendron, Crapemyrtle, and Nandina, but we wanted to be sure.

Are any of the plants you're concerned about being watered given our current drought? (One soaking of their root zones once a week or less might be enough.) Our Watering Trees and Shrubs page provides guidance on how to determine when watering would benefit the plants.

Miri