Related by context. Frequent words. (Click for all words.) 62 Dutch elm disease 57 elms 56 beetle infestation 54 gypsy moths 53 gypsy moth 52 bark beetle 51 emerald ash borer 51 elm trees 51 pine beetles 51 infestation 50 pine beetle 49 fungal disease 49 elm 49 beetle 49 ash borer 49 eastern equine encephalitis 49 Emerald Ash Borer 49 defoliated 48 ash trees 48 invasive weed 48 infestations 48 phragmites 46 varroa mite 46 maples 46 mountain pine beetle 46 aphid 46 noxious weed 46 fungus 45 borers 45 horse chestnut 45 beetles 45 sugar maples 45 Eastern equine encephalitis 44 invasives 44 stink bug 44 mosquito borne virus 44 lodgepole pine 44 locust 44 hemlocks 44 purple loosestrife 44 poplars 43 junipers 43 West Nile Virus 43 Japanese knotweed 43 West Nile virus 43 dieback 43 insect infestation 43 Eastern Equine Encephalitis 43 elm tree 43 armyworms 43 birches 43 mosquito borne illness 43 moth 43 invasive species 43 defoliation 43 beech trees 43 buckthorn 42 disease 42 pests 42 insect pests 42 insect 42 bark beetle infestation 42 root rot 42 blight 42 sugar maple 42 blueberry bushes 42 pear trees 42 pine trees 42 pest 42 arborists 42 forester 41 arborist 41 fern 41 birch trees 41 bark beetles 41 resistant varieties 41 West Nile 41 citrus canker 41 canker 41 sycamore 41 conifers 41 walnut trees 41 borer 41 knapweed 41 Lyme disease 41 poplar trees 41 woody plants 41 Invasive species 41 insect infestations 41 chestnut trees 41 mosquito populations 41 mosquito borne 40 tick borne diseases 40 nematode 40 weevil 40 oak trees 40 blue jay 40 fungal diseases 40 trees 40 entomologists 40 dogwood