Related by context. Frequent words. (Click for all words.) 75 fungus 65 fungal diseases 65 powdery mildew 65 root rot 61 stem rust 61 infestation 61 pests 61 fungal infection 60 dieback 60 infestations 59 spider mites 59 beetle 59 citrus greening 58 insect 58 insect pests 58 Fusarium 58 nematode 58 beetle infestation 57 aphid 57 pest 57 aphids 56 mites 56 invasive weed 56 nematodes 56 fungal 55 weevil 55 stink bug 55 Asian soybean rust 55 disease 55 ash borer 55 Colony Collapse Disorder 55 psyllid 55 beetles 54 pathogen 54 Ug# 54 thrips 54 bark beetle 54 Dutch elm disease 54 moth 54 Aphids 54 borers 54 armyworms 54 emerald ash borer 54 pine beetles 54 borer 53 insects 53 gypsy moths 53 canker 53 bark beetles 53 fungi 53 weevils 52 Fungus 52 gypsy moth 52 parasitic disease 52 Japanese knotweed 52 soybean rust 52 defoliation 51 knapweed 51 resistant varieties 51 fungal infections 51 frosts 51 insect populations 51 stink bugs 50 invasive species 50 parasite 50 insect infestations 50 Emerald Ash Borer 50 hemlocks 50 citrus canker 50 frost 50 insect infestation 50 noxious weed 49 midge 49 bacterial infection 49 caterpillars 49 Pests 49 horse chestnut 49 defoliated 49 bacterium 49 pine beetle 48 mosquito populations 48 overwintering 48 didymo 48 viral diseases 48 wasp 48 bee populations 48 ash trees 48 elm trees 48 fungal spores 48 Lyme disease 48 invasives 48 elms 48 purple loosestrife 48 walnut trees 48 mosquito borne disease 48 Disease 48 citrus trees 48 spores 47 Chagas disease 47 poison ivy 47 spp