Related by context. Frequent words. (Click for all words.) 66 hemlocks 66 beetles 65 beetle 62 gypsy moths 62 gypsy moth 62 invasive weed 61 purple loosestrife 61 ash borer 60 insect 60 stink bug 60 bark beetle 59 fungus 59 aphid 58 spider mites 58 psyllid 58 aphids 57 weevil 57 beetle infestation 57 insect pests 57 phragmites 57 invasives 57 invasive species 56 borers 56 nematodes 56 fungal disease 56 emerald ash borer 56 insects 55 infestation 55 caterpillars 55 pine beetles 55 stink bugs 55 borer 55 tamarisk 55 species 54 pests 54 infestations 54 kudzu 54 dieback 54 deer ticks 53 gray squirrel 53 lodgepole pine 53 bark beetles 53 nematode 53 cheatgrass 53 weevils 52 barred owl 52 pine beetle 52 defoliation 52 nonnative species 52 beneficial insects 52 Emerald Ash Borer 52 mites 52 hydrilla 52 didymo 52 feral pigs 52 wasp 52 thrips 52 woody plants 51 defoliated 51 garlic mustard 51 sea lamprey 51 conifers 51 mosquito populations 51 Zebra mussels 51 zebra mussel 51 milfoil 51 pathogen 51 larvae 50 cane toads 50 wasps 50 Asian soybean rust 50 ash trees 50 Invasive species 50 zebra mussels 50 root rot 50 gray squirrels 50 understory 50 barred owls 50 moth 50 hardwood trees 50 pest 50 rhododendron 49 deer herd 49 fungi 49 larval stage 49 ants 49 chestnut trees 49 noxious weed 49 invasive weeds 48 amphibian species 48 boll weevil 48 insect infestation 48 nonnative 48 soybean rust 48 aspen trees 48 poison ivy 48 hardwood forests 48 hemlock 48 bird species 48 Africanized bees 48 eelgrass