WebDec 14, 2024 · Diseases of azaleas and rhododendrons Botryosphaeria dieback Phytophthora dieback Ovulinia petal blight Exobasidium gall Fungal leaf spots Rust … WebThere are pest problems on rhododendron that occur almost every year in Connecticut. I. Common Problems: A. Biotic Problems (caused by living agents): 1. Diseases 2. Insects. B. Abiotic Problems (caused by nonliving agents): 1. Cultural 2. Environmental. II. Pest Control: A. Accurate Diagnosis. B. Severity of Problem: 1.
RHODODENDRONS - Washington State University
WebJul 15, 2024 · Azalea & Rhododendron Diseases Root & Crown Rot. The fungus Phytophthora species causes one of the most common disease problems in the landscape for... Petal Blight. This fungal disease, caused by Ovulinia azaleae, primarily affects the … Azaleas and rhododendrons should be inspected regularly for insects and … Control: Hand pulling is a simple, practical approach for small areas. Improve the … WebOct 27, 2024 · Too Much Water Can Cause Curled Rhododendron Leaves. Rhododendrons can suffer from root rot if they're not in well-drained soil. Putting one of these shrubs in a wet spot in the garden is always a mistake. A pathogen called phytophthera takes hold in overly damp conditions. To see if this disease is the problem, … christ church new orleans la
Azaleas and Rhododendrons: Identify and Manage Problems
WebMay 29, 2015 · Diseases of Rhododendron Diseases of Rhododendron ( Rhododendron spp.) D. M. Benson, primary collator (last update 5/29/2015) ALGAL … WebLeaf Spots. Leaf spots caused by various fungi may be seen on rhododendrons and azaleas. The color may be yellow, brown or black and the size may range from ¼" to 1" in diameter depending on the causative … WebSep 21, 2024 · Rhododendrons, like many other plants, are susceptible to a number of diseases. And most of them are caused by fungal infections. These fungi may live in the soil in your yard, or they may have been present on your rhododendron when you purchased it from the nursery. Healthy rhododendrons can resist fungal infestation. christ church new orleans