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](/agnr.umd.edu/sites/extension.umd.edu/files/styles/optimized/public/2022-02/IPMnet_Gall_spiny_witchhazel_aphid_SK.jpg?itok=woYQs-Iy)
![Spiny witchhazel gall aphid damage on birch leaves](/agnr.umd.edu/sites/extension.umd.edu/files/styles/optimized/public/2022-02/IPMnet_Aphid_spiny_witchhazel_gall_damage_on_River%20birch_SK.jpg?itok=jRrAkuQg)
![Lady bird beetle eggs on birch leaf infested with spiny witchhazel gall aphids](/agnr.umd.edu/sites/extension.umd.edu/files/styles/optimized/public/2022-02/IPMnet_Beetle_lady_bird_eggs_on_birch_with_spiiny_witchhazel_gall_aphids_SK.jpg?itok=Niuazrt1)
![Lady bird beetle adults on birch with spiny witchhazel gall aphids](/agnr.umd.edu/sites/extension.umd.edu/files/styles/optimized/public/2022-02/IPMnet_Beetle_lady_bird_feeding_on_witchhazel_gall_aphids_on_birch_SG.jpg?itok=iaKAoyvI)
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.