Related by context. Frequent words. (Click for all words.) 66 noxious weeds 62 purple loosestrife 62 leafy spurge 61 noxious weed 61 Invasive species 61 knapweed 61 invasives 60 cheatgrass 60 invasive weeds 59 Aphids 59 forbs 59 woody plants 58 invasive weed 58 conifers 57 junipers 57 salt cedar 56 weeds 56 mountain pine beetles 56 Herbicides 56 invasive species 56 spider mites 56 tamarisk 56 whiteflies 56 aquatic weeds 55 groundcovers 55 Japanese knotweed 55 understory 55 aspen trees 55 Zebra mussels 55 phragmites 54 grasses 54 shrubs 54 herbaceous plants 54 dandelions 54 beetle infestation 54 vegetation 54 ponderosa pines 54 cutworms 54 Poison ivy 53 thistles 53 knotweed 53 garlic mustard 53 bark beetles 53 pests 53 pine beetles 53 shade tolerant 53 chickweed 52 prairie grasses 52 Prescribed burns 52 adelgid 52 hemlock trees 52 lodgepole pines 52 mountain laurel 52 evergreen shrubs 52 prairie grass 52 beetles 52 bark beetle 52 aspens 52 lodgepole pine 52 groundcover 51 buckthorn 51 giant hogweed 51 mesquite trees 51 hemlock woolly adelgid 51 cottonwoods 51 sagebrush 51 herbicides 51 feral hogs 51 weed seeds 51 insect infestations 51 native grasses 51 insect pests 51 tall grasses 50 willows 50 broadleaf weeds 50 pigweed 50 perennial grasses 50 hemlocks 50 Feral cats 50 black footed ferrets 50 bindweed 50 ornamentals 50 perennials 50 aspen 50 feral pigs 50 woody debris 50 poison oak 50 Grizzly bears 50 ragwort 50 insect pest 50 gypsy moths 50 whitefly 50 cattails 50 prairie dogs 50 species 49 walnut trees 49 deciduous trees 49 nematodes 49 invasive pests 49 oak woodlands 49 emerald ash borers