Related by context. Frequent words. (Click for all words.) 60 Gypsy moths 59 hemlock trees 58 elm trees 57 invasive insect 57 adelgids 57 beech trees 56 walnut trees 56 elms 56 species 55 deciduous forests 55 loosestrife 55 overwintered 55 vetch 55 bur oak 55 hogweed 54 jack pine 54 Emerald ash borer 54 bee populations 54 barrens 54 honeybee population 54 Phragmites 53 grassland habitat 53 hemlocks 53 giant hogweed 53 chestnut trees 53 barberry 53 fungal disease 53 melaleuca 53 beetle 53 ash borers 53 amphibian populations 53 hay meadows 53 hardwood forests 53 conifers 53 genetically pure 53 eelgrass beds 52 hickories 52 Scotch broom 52 adelgid 52 hardwood trees 52 Boreal forest 52 marten 52 Phytophthora 52 longleaf pines 52 chestnut tree 52 caribou herds 52 tallgrass prairie 52 tulip tree 52 Invasive plants 52 ash trees 52 sawfly 52 poplar trees 51 anthracnose 51 bobolinks 51 deciduous tree 51 spruce trees 51 forested wetlands 51 knotweed 51 beetles 51 piñon 51 conifer 51 oak wilt 51 gypsy moth caterpillars 51 maples 51 grassland birds 51 hemlock woolly adelgid 51 serviceberry 51 bog turtles 51 wetland habitats 51 lowland forests 51 freshwater mussels 51 insect pest 51 elm 51 Infestations 50 trees 50 berry bushes 50 beetle infestation 50 cordgrass 50 alfalfa fields 50 bald eagle nest 50 woody plants 50 sedge 50 fungus 50 bee colonies 50 blueberry crop 50 invasive pest 50 cattle herds 50 insect 50 emerald ash borers 50 purple loosestrife 50 leafy spurge 50 cedars 50 tamarack 50 muscadines 50 wetland ecosystems 50 boreal forests 50 beech tree 50 saltcedar 50 eagle nests 50 native brook trout 50 mussel species