Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous Trees > Poplar > Irregular growths on leaves
Poplar > Leaves > Irregular growths on leaves
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Poplar petiole and leaf stipule galls
Pemphigus spp.
- Leaf petiole becomes round and swollen
- Leaf blade attached to petiole is also deformed by P. populicaulis
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Poplar vagabond aphid
Mordvilkoja vagabunda
- Leaf petioles swell, becoming irregularly enlarged to approximately ½ inch in length
- Development of galls seen in early spring
- More information on Poplar vagabond aphid