Related by context. Frequent words. (Click for all words.) 82 invasive species 70 noxious weeds 66 milfoil 64 pests 61 zebra mussels 61 gypsy moth 60 weeds 59 insect pests 58 hydrilla 58 emerald ash borer 56 beetles 55 beetle 55 conifers 55 species 54 ash trees 53 vegetation 53 poison ivy 53 nematodes 53 grasses 53 weevils 53 beneficial insects 53 pest 52 insects 52 infestations 52 pine beetle 51 herbicides 51 aphids 51 bark beetles 51 invasive 51 mussels 51 elms 50 shrubs 50 ornamentals 50 insect 50 fungi 50 wetlands 50 fungus 49 cormorants 49 pathogens 49 lionfish 49 Asian carp 49 nonnative 49 cattails 49 honeysuckle 49 rhododendron 48 dandelions 48 weed 48 infestation 48 carp 48 ornamental plants 48 fungal disease 48 critters 48 native grasses 47 EAB 47 wildlife 47 wetland 47 waterways 47 wasps 47 pathogen 47 perennials 46 aphid 46 borer 46 ferns 46 marsh 46 pollinators 46 herbicide 46 soil erosion 46 aspen 46 mollusks 46 mosquito larvae 46 prairie dogs 46 Invasive 46 kudzu 46 beavers 45 algae 45 mountain pine beetle 45 caterpillars 45 ladybugs 45 milkweed 45 seedlings 45 seagrass 45 habitats 45 microorganisms 45 wildlife habitat 45 cane toads 45 nesting birds 45 biodiversity 45 ecosystems 45 lake trout 44 snails 44 flora 44 estuaries 44 habitat 44 fern 44 soybean rust 44 hostas 44 DNR 44 deer herd 44 foresters 44 organisms 44 turfgrass