Related by context. Frequent words. (Click for all words.) 79 pine beetle 77 mountain pine beetle 73 bark beetles 62 beetle 59 beetles 59 aspen 57 gypsy moths 56 fungus 56 gypsy moth 54 hemlocks 54 fungal disease 53 noxious weeds 53 emerald ash borer 53 invasive species 52 forest fires 52 insect pests 51 ash trees 51 pests 50 wildfires 50 conifers 50 fungi 49 grizzly bears 49 noxious weed 48 mites 48 nematodes 47 wildland fires 47 deer herd 47 infestations 47 lichen 47 infestation 47 pine forests 47 boreal forest 47 insects 47 aphids 47 conifer 47 prairie dog 46 spruce trees 46 prairie dogs 46 Forest Service 46 insect 46 bighorns 46 caterpillars 46 mosquito populations 46 wildfire 46 beavers 46 pine trees 46 prescribed burns 46 hantavirus 46 grizzlies 45 cougars 45 grasshoppers 45 milfoil 45 elk 45 lynx 45 nematode 45 lichens 44 rangeland 44 hemlock 44 termites 44 cane toads 44 aphid 44 mosquitos 44 cottonwoods 44 vegetation 44 feral hogs 44 grasses 44 bee colonies 44 coyotes 44 ragweed 44 mule deer 44 poison ivy 43 zebra mussels 43 wildland fire 43 forests 43 prolonged drought 43 elms 43 honeybees 43 wasps 43 squirrels 43 bed bugs 43 wolves 43 Douglas fir 43 trees 43 mosquitoes 43 moose 43 nose syndrome 43 weevils 43 caribou 43 honey bees 42 beneficial insects 42 West Nile virus 42 pronghorn 42 deciduous trees 42 wasp 42 locusts 42 moth 42 gophers 42 locust 42 pathogen 42 herbicides 41 weevil