Phlox Flower Leaves Turning Yellow. Check the undersides of the leaves. Tiny tan to reddish brown hard spheres and white cottony growth can be seen at the base of infected leaves or in the soil around infected plants.
Click to see full answer. This disease is spread by leaf hoppers and mites but die when the plants die. Its probably a fungal disease which means it.
The bottom leaves are starting to turn yellow.
The bottom leaves are starting to turn yellow. Healthy plants are better able to tolerate mites so make sure phlox are watered and fertilized adequately. The disease may progress to phlox yellowing and drying out as well as. Drought stress powdery mildew plant density or lack of soil nutrients.