Insects
- Foliage Feeding
- Bark Beetles and Phloem Boring
- Wood Boring
- Terminal, Shoot, Twig and Root
- Seed, Cone, Flower and Fruit
- Sapsucking Insects and Mites
- Gall Makers
- Other Important Insects
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Diseases
- Root and Butt Diseases
- Foliage Diseases
- Stem, Cone and Broom Rusts
- Wood Decays and Cankers
- Declines, Diebacks and Wilts
- Other Diseases
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Weeds
- Trees
- Shrubs
- Vines
- Grasses
- Ferns
- Forbs
- Parasitic Plants
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Other Agents
- Abiotic Damage
- Human Damage
- Animal Damage
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