Related by context. Frequent words. (Click for all words.) 64 spores 63 fungal spores 58 Aphids 54 Fungus 53 Larvae 53 whiteflies 53 spore 53 Fungal 52 larvae 52 microorganism 51 mites 51 Bacteria 51 fungi 50 Parasites 50 Pathogen 50 aphids 50 fungus 49 Aspergillus 49 Infestation 49 Pathogens 49 weed seeds 49 mold spores 49 Viruses 49 Microorganisms 49 Cicadas 49 whitefly 49 insects 49 bacteria 48 Didymo 48 pupae 48 Clostridium 48 Insects 48 nematodes 48 microbes 48 Canker 48 protozoan 48 insect pests 48 Skunks 47 Mosquitos 47 urushiol 47 Allergens 47 E.Coli 47 Phytophthora 47 Bacterial 47 larval stage 47 pathogen 47 organisms 47 Plants 47 Toxins 47 Salmonella bacteria 47 pustules 47 pyrethroids 47 rhizomes 46 adelgid 46 sucking insects 46 Poison ivy 46 spider mites 46 infestations 46 fungal diseases 46 psyllids 46 pollen 46 Hantavirus 46 Mosquitoes 46 microorganisms 46 downy mildew 46 Sudden Oak 46 thrips 46 Staphylococcus 46 beetles 46 chytrid fungus 46 Fungi 46 organism 46 Grasses 46 Herbicides 46 Earthworms 46 bugs 45 virulent strains 45 chiggers 45 Germs 45 insect populations 45 Infested 45 Rodents 45 Prions 45 pathogens 45 forbs 45 pollen grains 45 caterpillars 45 bacterial 45 microscopic organisms 45 fungal 45 protozoa 45 Organisms 45 knapweed 45 seedpods 45 naturally occurring bacteria 45 Bacillus 45 bacterial strains 44 Infected 44 Nests 44 ragwort 44 Dandelions