Common Symptoms
Distorted or twisted leaves
Leaves grow abnormally, appearing curled, blistered, twisted or unusually small on the plant.
Signs to check
- Distortion mainly affects young leaves and new shoots.
- The leaf surface may feel swollen, blistered or unusually rough.
- Leaves roll upwards or downwards, or curl in on themselves.
- Leaf structure is altered, but there are no visible holes or bite marks.
Common causes
- Aphids · Small pear-shaped insects, often clustered on new shoots.
- Mealybugs · White cottony clumps in leaf axils and on stems.
- Thrips · Tiny insects leaving silvery streaks and black dots on leaves.