Hawthorn > Fruit/flowers > Fruit deformed or with unusual growths
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- Fruit and stems may be swollen or distorted
- Some yellow to orange leaf spots may be present
- Tubular, white fungal spore producing structures protrude from fruit, giving it a spiky appearance; become orange when spores are released
- Bright orange powdery spores may be seen on and around infected leaves and fruit
- More information on Quince rust...