Related by context. Frequent words. (Click for all words.) 65 mountain pine beetles 63 pine beetles 61 bark beetles 60 lodgepole pines 59 pine beetle infestation 59 beetle infestation 58 lodgepole pine 57 bark beetle 57 bark beetle infestation 55 Bighorn sheep 55 mountain pine beetle 54 Feral hogs 53 whiteflies 53 aspen trees 53 pine beetle 52 Poison ivy 52 hemlock trees 52 aspen 52 leafy spurge 52 Infestations 52 Chronic wasting disease 51 fungus 51 gypsy moth caterpillars 51 cheatgrass 51 fungal disease 51 Aphids 51 spotted knapweed 50 hemlock woolly adelgid 50 Mountain Pine Beetle 50 knapweed 50 beetle 50 ponderosa pines 49 invasive weeds 49 hemlocks 49 boreal forests 49 Zebra mussels 49 aspens 49 anthracnose 49 hickories 49 cutworms 49 hibernating bats 48 stripe rust 48 mealybugs 48 conifers 48 fungal spores 48 soybean aphid 48 Grizzly bear 48 beetles 48 Freezing temperatures 48 adelgid 48 pine forests 48 Sage grouse 48 hackberry 48 Sperm whales 48 Hantavirus 47 insect infestations 47 cankers 47 Phytophthora 47 Invasive species 47 Soybean rust 47 Colder temperatures 47 spider mites 47 oak wilt 47 Douglas fir trees 47 sequoias 47 scrub oak 47 emerald ash borers 47 Staph bacteria 47 black footed ferrets 47 Gusty winds 47 elk herds 47 invasive weed 46 Controlled burns 46 borers 46 Eurasian watermilfoil 46 salt cedar 46 chytrid fungus 46 Warmer temperatures 46 tamarisk 46 Prescribed burns 46 hardwood forests 46 Warm temperatures 46 junipers 46 sagebrush 46 cattle herds 46 forbs 46 pesky insects 46 Voles 46 oak woodlands 46 jack pine 45 nematodes 45 Hydrilla 45 deer herds 45 mites 45 woody plants 45 cottonwoods 45 juniper trees 45 Fierce winds 45 psyllids 45 hardwood trees 45 Didymo