Updated: October 23, 2024

The photos below are to help with identification of the pests listed on the Pest Predictive Calendar that is part of the commercial ornamental horticulture IPM program.

Spiny witchhazel flower bud galls
Spiny witchhazel gall aphid flower bud galls
Spiny witchhazel gall aphid damage on birch leaves
Damage on birch leaves caused by spiny witchhazel gall aphids
Lady bird beetle eggs on birch leaf infested with spiny witchhazel gall aphids
Lady bird beetle eggs on birch leaves with a high spiny witchhazel gall aphid population
Lady bird beetle adults on birch with spiny witchhazel gall aphids
Lady bird beetle adults on birch leaves with a high spiny witchhazel gall aphid population