Related by context. Frequent words. (Click for all words.) 59 pine beetle infestation 56 beetle infestation 56 pine beetle 56 mountain pine beetles 56 lodgepole pines 55 pine beetles 54 hemlock trees 54 lodgepole pine 54 aspen 53 clearcuts 53 insect infestations 53 jack pine 53 aspen trees 53 beetle 53 hardwood trees 52 fireweed 52 bark beetle 52 ponderosa pines 52 pine forests 52 oak wilt 52 emerald ash borers 51 Mountain Pine Beetle 51 pine plantations 51 pine trees 51 mountain pine beetle 51 manzanita 51 leafy spurge 51 buckthorn 51 Japanese knotweed 51 ash borer 51 Douglas fir 50 knapweed 50 invasive weed 50 pine plantation 49 invasives 49 walnut trees 49 ash trees 49 birch trees 49 knotweed 49 beetles 49 juniper 49 beech trees 49 bark beetle infestation 49 eucalypts 49 poplar trees 49 Prescribed burns 48 hemlock woolly adelgid 48 Emerald Ash Borer 48 noxious weed 48 forests 48 conifer 48 aspens 48 Douglas firs 48 reforested 48 juniper trees 48 trees 48 ponderosa pine 48 spruce trees 48 conifers 48 insect infestation 48 bark beetles 48 noxious weeds 48 hemlocks 48 virgin forests 48 fungus 48 balsam fir 48 reforesting 47 woody debris 47 sequoias 47 forest 47 wood chips 47 emerald ash borer 47 invasive weeds 47 junipers 47 poplars 47 salt cedar 47 barrens 47 Eurasian watermilfoil 47 cottonwood 47 forest thinning 47 infestation 47 pine 47 oak woodlands 47 berry bushes 47 fir 47 ragwort 46 horsetail 46 pines 46 longleaf pine 46 barberry 46 Sudden Oak 46 clearcutting 46 mesquite 46 red cockaded woodpecker 46 timber 46 prairie grasses 46 elm trees 46 gypsy moths 46 cheatgrass 46 timber harvests 46 morel mushrooms