Related by context. Frequent words. (Click for all words.) 76 aspen 68 Douglas fir 68 conifers 67 mountain pine beetle 65 conifer 65 bark beetles 64 pine beetle 64 hemlocks 64 aspens 63 cottonwood 61 pine trees 61 spruce trees 60 sagebrush 60 fir trees 59 hemlock 58 juniper 58 cottonwoods 58 vegetation 57 beetle 56 poplar 56 trees 56 birch 56 pines 55 elms 55 lichen 55 fir 55 pine forests 55 ash trees 54 grasses 54 forests 53 deciduous trees 53 chaparral 53 forest 52 cedars 52 maples 52 oak trees 52 willows 51 beetles 51 elk 51 prescribed burns 51 pine forest 51 grassland 51 timber 51 pine 51 evergreen trees 51 boreal forest 51 grasslands 50 hardwoods 50 evergreens 50 oaks 50 grizzly bears 50 rhododendron 50 underbrush 50 timber harvest 49 noxious weeds 49 cedar 49 deciduous 49 elm 49 shrub 49 woodlands 49 forest canopy 49 mesquite 49 seedling 49 firs 49 sycamore 49 cedar trees 49 redwood 49 foliage 48 elk herd 48 rangeland 48 shrubs 48 Vegetation 48 gypsy moth 48 redwoods 48 native grasses 48 gypsy moths 48 seedlings 48 eucalyptus trees 47 Forest Service 47 bighorn sheep 47 pine tree 47 moss 47 grizzlies 47 lichens 47 deer herd 47 tree 47 forested 47 oak 47 blue spruce 47 dogwood 46 timber harvesting 46 ferns 46 forestland 46 cattails 46 Forests 46 roadless areas 46 fungal disease 46 fungus 46 bighorns 46 fescue 46 species