GURU GARDENERS — PLANT DOCTOR
Check for powdery mildew

What this suggests
White powdery patches can be a fungal coating. Mineral residue, normal leaf markings, and waxy insects can look similar.

Confirm the clues
• Use a hand lens to distinguish surface powder from individual insects.
• Compare the pattern with a guide for your plant species.

What to do now
1. Improve spacing and airflow without stripping healthy foliage.
2. Remove badly affected small leaves where practical; if treatment is needed, confirm the disease and use a product labeled for that plant.

Hold off on
Skip homemade detergent or baking-soda sprays; they can injure leaves.

What to watch for
Photograph a marked leaf and check for new patches over the next several days.

Read more
https://gurugardeners.com/guides/may-tasks
Maryland Extension · Leaf spots on flowers: https://extension.umd.edu/resource/fungal-leaf-spot-disease-flowers
Minnesota Extension · Managing plant diseases: https://extension.umn.edu/garden-and-home/yard-and-garden/yard-and-garden-problems/managing-plant-diseases-in-the-home-garden

A guided check, not a confirmed diagnosis. Seek plant-specific help if symptoms worsen.
https://gurugardeners.com/plant-doctor