Related by context. Frequent words. (Click for all words.) 68 giant salvinia 68 Hydrilla 67 salvinia 63 aquatic weeds 62 Phragmites 62 hydrilla 61 Zebra mussels 61 water hyacinth 60 Eurasian milfoil 60 invasive insect 60 Nutria 60 Emerald ash borer 59 Formosan termites 59 Invasive plants 58 Milfoil 58 hemlock woolly adelgid 58 purple loosestrife 57 invasive weed 57 invasive species 57 Gypsy moths 57 adelgids 57 microscopic algae 57 oxalis 56 freshwater marshes 56 loosestrife 56 aquatic weed 56 stinkbugs 56 Scotch broom 56 Eurasian watermilfoil 56 Quagga mussels 56 melaleuca 55 zebra mussel 55 Lake Bistineau 55 phragmites 55 invasive mussels 55 Lionfish 55 zebra mussels 55 Japanese knotweed 55 cattail 55 salt cedar 55 freshwater shrimp 55 mussel species 54 aquatic vegetation 54 freshwater mussels 54 duckweed 54 sea lampreys 54 Feral hogs 54 round gobies 54 nutria 54 round goby 54 invasives 54 spotted knapweed 54 alga 54 invasive pest 54 northern snakehead 54 invasive weeds 53 whiteflies 53 viral hemorrhagic septicemia 53 cypress swamp 53 mealybug 53 hogweed 53 Invasive species 53 emerald ash borers 53 Didymo 53 toxic algae blooms 53 snakehead fish 53 fireweed 53 buffelgrass 53 invasive pests 53 milfoil 52 bagworms 52 spider mites 52 garlic mustard 52 mussels 52 quagga mussel 52 nonnative plants 52 mealybugs 52 Canker 52 weevils 52 Aphids 52 invasive alien 52 tamarisk 52 Algae blooms 52 fungus 52 toxic algae bloom 51 adelgid 51 Africanized honeybees 51 spoonbills 51 invasive aquatic 51 bulrush 51 Poison ivy 51 knapweed 51 cypress swamps 51 cattails 51 whitefly 51 brown marmorated stink bug 51 toxic algae 51 Infestations 51 Emerald Ash Borer 51 gizzard shad 51 Willapa Bay