Related by context. Frequent words. (Click for all words.) 61 hemlock woolly adelgid 59 beetle infestation 58 hemlock trees 58 adelgid 57 gypsy moth caterpillars 55 dieback 54 lodgepole 53 hemlocks 53 defoliation 52 hackberry 52 defoliated 52 invasive weed 51 bark beetle 51 anthracnose 51 pine beetle infestation 51 root rot 51 hickories 51 Infestations 51 insect pest 50 fungus 50 gypsy moth 50 defoliate 50 fungal disease 50 infestations 50 mountain pine beetles 50 leafy spurge 50 grassland birds 49 infestation 49 Sudden Oak 49 gypsy moths 49 salt cedar 49 Soybean rust 48 insect infestation 48 knapweed 48 hemlock 48 whiteflies 48 insect infestations 48 Eurasian milfoil 48 Phytophthora 48 bark beetle infestation 48 lodgepole pine 48 hardwood trees 48 mealybugs 48 purple loosestrife 48 aspen 48 Asian longhorned beetle 48 loosestrife 47 barrens 47 junipers 47 soybean aphid 47 insect 47 oak woodlands 47 beetle 47 jack pine 47 whitefly 47 noxious weed 47 understory 47 hibernating bats 47 pine beetles 46 tamarisk 46 juniper 46 giant hogweed 46 barberry 46 mountain laurel 46 hardwood forests 46 bark beetles 46 borers 46 Mountain Pine Beetle 46 spotted knapweed 46 fireweed 46 downy mildew 46 manzanita 46 phragmites 46 amphibian populations 46 insect borne 46 invasive pest 45 Scotch pine 45 tick borne disease 45 sedge 45 Scotch broom 45 dogwood 45 crabapple 45 poison ivy 45 rock snot 45 winterkill 45 longleaf pine 45 European corn borer 45 Poison ivy 45 Hydrilla 45 mountain pine beetle 45 kudzu 45 woody plants 45 beetles 45 ponderosa pines 45 berry bushes 45 aphid 45 cheatgrass 45 Japanese knotweed 45 corn borer 45 pine plantations 45 bee populations