Related by context. Frequent words. (Click for all words.) 64 algae 59 Hydrilla 58 hydrilla 57 naturally occurring bacteria 57 cattail 57 aquatic weeds 56 phragmites 56 mosquito larvae 56 moss 56 water hyacinth 55 alga 55 insect larvae 54 fungal 54 Eurasian milfoil 54 loosestrife 54 bacteria 54 whitefly 54 skunk cabbage 54 micro organism 54 fungus 54 whiteflies 53 cattails 53 Eurasian watermilfoil 53 fungi 53 anaerobic bacteria 53 inoculum 53 milfoil 52 nematodes 52 algal 52 microscopic algae 52 microorganisms 52 purple loosestrife 52 microorganism 52 sea squirts 52 spider mites 52 milkweed 52 cyanobacteria 52 larvae 52 weeds 52 Japanese knotweed 51 hyacinth 51 Algae 51 aquatic vegetation 51 pigweed 51 sphagnum moss 51 microbes 51 bacterial 51 aphid 51 aphids 51 insects 51 bacterium 50 horsetail 50 protozoan 50 brine shrimp 50 mycobacteria 50 ponds 50 eel grass 50 earthworms 50 Poison ivy 50 nematode 50 organisms 50 seaweeds 50 Bti 50 eelgrass 50 larvacide 50 pathogen 50 caterpillars 50 microbe 50 parasitic worms 50 chickweed 50 weed seeds 50 larva 50 copepods 49 mealybugs 49 rock snot 49 groundcover 49 kudzu 49 insect 49 fungal spores 49 sucking insects 49 sedge 49 freshwater mussels 49 vetch 49 knotweed 49 Bacteria 49 cutworms 48 pond scum 48 seaweed 48 Bacillus thuringiensis 48 Didymo 48 Aphids 48 invasive weed 48 purslane 48 crabgrass 48 butterfly bush 48 red wigglers 48 Miscanthus 48 stink bugs 48 root rot 48 micro organisms 48 mites