6/7/2023 0 Comments F stop fungicideYou can also prune plumeria trees to open them up to good air circulation. To improve airflow around plumeria, keep the area around them weed-free and not overcrowded. Affected leaves can be removed but be sure to properly sanitize tools between plants. When plumeria rust is discovered, all fallen leaves should be cleaned up and disposed of immediately. Rust on plumeria leaves is usually controlled by proper sanitation, fungicides, and selecting disease-resistant varieties. Later, the fungus was discovered on commercial plumeria plants on Oahu, quickly spreading throughout all the Hawaiian Islands. It quickly spread across all tropical regions where plumeria grows. Plumeria rust was first discovered by botanists in 1902 on the islands of the West Indies. How to Treat Plumeria Plants with Rust Fungus It will also spread to other nearby plumerias. If left unchecked, rust on plumeria leaves can defoliate the whole tree in under two months. These leaves may curl, become distorted, turn brown-gray, and drop off the plant. These lesions are actually spore-producing pustules. When flipped over, the underside of the leaves will have correlating powdery orange lesions. Usually, the first noticeable symptom of rust on plumeria is yellow specks or spots on the upper sides of the leaves. This fungus is most prevalent in warm, humid seasons or locations. When the spores make contact with moist leaves, they stick to them, then begin to grow and produce more spores. Its spores are airborne or spread from plant to plant from the backsplash of rain or watering. Plumeria rust affects the foliage of the plant but not the stems or flowers. It is caused by the fungus Coleosporium plumeriae. Plumeria rust fungus is specific to plumeria plants. Plumeria rust fungus is a disease that is specific to plumeria. Although fungal diseases can happen anywhere, warm, humid, tropical regions are especially favorable for fungal growth. While they are attractive trees in the landscape, they are mostly grown and cultivated for their highly fragrant blooms. Plumeria, also known as frangipani or Hawaiian lei flowers, are a genus of flowering tropical trees, hardy in zones 8 through 11.
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