Related by context. Frequent words. (Click for all words.) 69 hydrilla 64 phragmites 64 water hyacinth 63 aquatic vegetation 62 weevils 61 purple loosestrife 61 invasives 60 invasive species 60 milfoil 59 invasive weed 59 algae 58 invasive weeds 58 mosquito larvae 57 weeds 57 insect pests 56 marsh 56 zebra mussel 55 hyacinth 55 feral pigs 55 insects 55 eelgrass 55 caterpillars 55 tamarisk 55 didymo 54 mosquitos 54 alga 54 fungus 54 Zebra mussels 54 aphid 54 weevil 54 zebra mussels 54 mosquito populations 54 insect 54 cattails 54 borers 53 grass carp 53 grasses 53 nutria 53 lionfish 53 vegetation 53 pests 53 mosquitoes 53 kelp 53 woody plants 52 nematode 52 nematodes 52 rotenone 52 mosquito 52 spider mites 52 beetles 52 feral hogs 52 buckthorn 52 algal blooms 51 Invasive species 51 stink bug 51 noxious weed 51 larvae 51 nonnative species 51 parasite 51 algal bloom 51 noxious weeds 51 stink bugs 51 aquatic species 51 gypsy moths 50 fungi 50 gizzard shad 50 algae blooms 50 beetle 50 aphids 50 seagrass 50 weed seeds 50 saltwater intrusion 50 garlic mustard 50 larval 50 kudzu 50 algal 50 snails 50 toxic algae 50 aquatic invasive species 50 gypsy moth 50 species 50 herbicide 49 sea lamprey 49 lampreys 49 wild hogs 49 cormorants 49 aquatic insects 49 infestations 49 woody debris 49 cane toads 49 mussels 49 thrips 49 wading birds 49 saltwater 49 salinity 49 wasps 49 sediment 49 midge 49 herbicides 49 hyacinths 49 ryegrass