Related by context. Frequent words. (Click for all words.) 70 emerald ash borers 68 ash borer 67 emerald ash borer 66 Emerald Ash Borer 64 hemlock woolly adelgid 63 ash trees 62 gypsy moths 62 invasive pest 62 infestations 61 infestation 61 borer 61 Infestations 60 Asian longhorned beetle 60 Soybean rust 60 oak wilt 59 beetle 59 adelgid 59 gypsy moth 59 hemlock trees 58 soybean aphid 58 fungus 58 invasive weed 58 invasive species 57 psyllid 57 Sudden Oak 57 psyllids 57 spotted knapweed 57 Eurasian watermilfoil 56 pests 56 beetles 56 purple loosestrife 56 fungal disease 56 gypsy moth caterpillars 56 knapweed 56 giant hogweed 55 soybean aphids 55 mealybugs 55 stink bug 55 tiger mosquito 55 insect pest 55 viral hemorrhagic septicemia 55 feral pigs 55 Zebra mussels 55 insect 55 Japanese knotweed 55 Hydrilla 55 deer ticks 54 anthracnose 54 mountain pine beetles 54 borers 54 weevils 54 Phytophthora 54 insect pests 54 whitefly 54 whiteflies 54 Invasive species 53 invasives 53 lady beetles 53 zebra mussels 53 insects 53 Asian citrus psyllid 53 chicken flocks 53 Feral hogs 53 Didymo 53 EAB 53 invasive aquatic 53 buckthorn 52 downy mildew 52 mosquito populations 52 Eurasian milfoil 52 Chronic wasting disease 52 garlic mustard 52 cutworms 52 knotweed 52 weevil 52 stink bugs 52 aphid 52 varroa mite 51 glassy winged sharpshooter 51 honeybee colonies 51 zebra mussel 51 Poison ivy 51 leafy spurge 51 hemlocks 51 parasitic wasps 51 carpenter ants 51 spider mites 51 sucking insects 51 deciduous tree 51 fungal spores 51 nematodes 50 chytrid fungus 50 hardwood trees 50 Canker 50 bark beetle 50 mites 50 beetle larvae 50 invasive pests 50 pest 50 beetle infestation 50 moth