Orange Powdery Spots
![Orange Powdery Spots](http://images.ctfassets.net/rp89vkans22z/53tQVc5KS3EahCX9n85qLs/4d02ca9a6e4f6b739d367800d07c953c/AdobeStock_456749677.jpeg)
Want to learn more about Symptoms: Orange powdery spots (Fungal Rust)
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Why are there orange powdery spots?
Orange-brown spots can form on the foliage of plants as a consequence of a fungal infection known as fungal rust disease. Fungal rust disease is usually quite simple to identify due to its characteristic rust-like spots. These spots are actually pustules that contain fungal spores and can occur on both the underside of the leaf as well as on its surface.
Symptoms
Orange-brown spots with a powdery consistency
Loss of foliage
Yellowing leaves
![Fungal Rust Disease 2](https://images.ctfassets.net/rp89vkans22z/53tQVc5KS3EahCX9n85qLs/4d02ca9a6e4f6b739d367800d07c953c/AdobeStock_456749677.jpeg)
Common causes
Fungal infections tend to develop under conditions of warmth, humidity, and low light intensity. Fungal rust is no exception to this - it's often seen when leaves are kept wet for prolonged periods of time, such as after long periods of heavy rain or if a plant has been misted too much.
![Fungal Rust Disease](https://images.ctfassets.net/rp89vkans22z/3KFtIod8tmmw1tNRzfyI80/84fed7e58315d426e27f9c37a8ad9fb5/AdobeStock_293135638.jpeg)
What to think about
Once it takes hold, it can very quickly spread. Left untreated your plant may risk dying or at least be severely stunted in growth.