Powdery mildew Posted on November 8, 2022August 1, 2023 by Tex Norwood Tags: Disease, Plumeria CareFine, white to gray, powdery fungal coating on leaves, stems, and flowers. Related Images:Related Articles: Plumeria Seeds and Seed QualityPowdery Mildew Chemical ControlsGlossary: Calcium CarbonatePlumeria RustMildewVisit our InfoTIP Glossary