Related by context. Frequent words. (Click for all words.) 62 invasives 61 noxious weed 61 invasive weed 60 purple loosestrife 60 invasive weeds 59 powdery mildew 59 phragmites 59 invasive species 58 knotweed 58 noxious weeds 58 insect pest 58 hydrilla 57 spider mites 56 gypsy moths 56 weeds 56 tamarisk 56 root rot 56 kudzu 56 knapweed 56 insect pests 56 salt cedar 55 bark beetle 55 fungal disease 55 Japanese knotweed 55 ash borer 55 garlic mustard 54 pests 54 feral pigs 54 fungus 54 weevil 54 nonnative species 54 poison ivy 54 buckthorn 53 citrus greening 53 woody plants 53 gypsy moth 53 cheatgrass 53 pine beetles 53 beetle infestation 53 weevils 53 invasive alien 52 beetle 52 canker 52 insect infestations 52 armyworms 52 Emerald Ash Borer 51 pest 51 infestations 51 stink bug 51 milfoil 51 crape myrtle 51 hemlocks 50 beetles 50 emerald ash borer 50 crabgrass 50 insect 50 understory 50 Soybean rust 49 infestation 49 feral hogs 49 pine beetle 49 water hyacinth 49 vegetation 49 herbicides 49 weed 49 ash trees 49 Integrated Pest Management 49 junipers 49 wild hogs 48 aphid 48 grasses 48 soybean rust 48 insect populations 48 crape myrtles 48 mosquito borne diseases 48 tall fescue 48 poison oak 48 manzanita 48 psyllid 48 bark beetles 48 citrus canker 48 fungal diseases 48 borers 48 boll weevil 48 lady beetles 47 beneficial insects 47 honeysuckle 47 nutria 47 Aphids 47 Invasive species 47 groundcover 47 defoliation 47 aphids 47 urban forester 47 lodgepole pine 47 thrips 47 Asian soybean rust 47 hardwood trees 47 stink bugs 47 aquatic vegetation 47 herbicide