I have a hedge of 43 waxleaf plants. Around 6 of those plants all next to each other haven't been doing too well within the past 2 months. Leaves started falling out and turning yellow with brown spots. Branches with no leaves easily break off. Could this be disease or just the 108° heat waves we've been having? What can I do to fix this?
The area of concern
A sample of a "sick" plant. No brown spots yet.
A sample of a healthy plant
