Related by context. Frequent words. (Click for all words.) 69 phragmites 65 knotweed 64 eelgrass 64 milfoil 64 invasives 63 purple loosestrife 63 invasive weed 63 invasive weeds 62 hydrilla 60 invasive species 59 salt cedar 59 Willapa Bay 59 Japanese knotweed 58 aquatic vegetation 58 invasive aquatic 57 garlic mustard 57 Didymo 57 tamarisk 57 gypsy moths 56 invasive pest 56 noxious weed 56 hemlock trees 56 noxious weeds 56 buckthorn 55 gypsy moth 55 sedge 55 marsh 55 water hyacinth 55 cattail 55 Invasive species 54 hardwood trees 54 weevil 54 whitefly 54 weeds 54 hyacinth 54 seagrass 54 knapweed 54 marsh grasses 54 sea squirts 54 weevils 53 seagrass beds 53 shellfish beds 53 alga 53 didymo 53 dieback 53 zebra mussel 53 pigweed 53 oyster reefs 53 nutrient runoff 53 whiteflies 52 tidal wetlands 52 root rot 52 rotenone 52 giant hogweed 52 woody debris 52 salt tolerant 52 mussel 52 intertidal 52 mussels 52 oyster beds 52 woody plants 52 duckweed 51 brookies 51 bark beetle 51 Canker 51 cattails 51 Zebra mussels 51 powdery mildew 51 spider mites 51 riparian habitat 51 salt marsh 51 psyllid 50 zebra mussels 50 chickweed 50 insect pest 50 nematode 50 shellfish 50 aphid 50 bullhead 50 kelp 50 varroa 50 understory 50 crab fishery 50 nonnative species 50 borers 50 bivalve 50 gill nets 50 forbs 50 bivalves 50 shorelines 50 tall fescue 49 aquatic invasive species 49 estuary 49 grasses 49 Invasive Species 49 hemlocks 49 nutria 49 armyworms 49 pests 49 salt marshes 49 underwater grasses