Hi there guys. Here are five of my first year blueberry plants. We've got the aphids under control right now they have diatomaceous earth on them they're watered deeply every 2 to 3 days. The days have been 55• at night and 90 during the day.
I'm noticing these brown dry patches on a few of the leaves of my plants. I looked it up and it looks most likely like a watering issue but my blueberries are evenly moist not muddy or wet, and they're in smart pots which should provide good airflow.
I looked up blueberry rust but these don't seem exactly like those spots. They just popped up though and it's definitely something that's trying to spread to the plant.
Thoughts and ways to fix it?