Related by context. Frequent words. (Click for all words.) 75 pollens 63 ragweed 62 Pollen 59 spores 58 aphids 57 mold spores 57 allergens 56 aphid 55 spore 55 fungi 55 beetles 55 fungus 55 insects 55 hay fever 54 mites 54 allergy sufferers 53 mosquitoes 53 insect 53 stink bugs 51 midge 51 allergen 51 fungal 51 larvae 50 allergy symptoms 50 fruiting 50 moisture 50 mosquito populations 50 bacteria 50 caterpillars 49 insect pests 49 acorns 49 pheromone 49 pollinate 49 water vapor 49 mosquitos 48 pollinating 48 bees 48 wasps 48 pollination 48 beetle 48 powdery mildew 47 wasp 47 moths 47 dust mites 47 blooms 47 fungal disease 47 airborne particles 47 larva 46 allergies 46 pests 46 sunlight 46 secretions 46 dust particles 46 mosquito larvae 46 pollutants 46 nematodes 46 allergist 46 IgE 46 seed pods 45 seasonal allergies 45 bacterial 45 poison ivy 45 toxins 45 flowering plants 45 gypsy moth 45 pathogen 45 toxin 45 gypsy moths 45 pollinated 45 weevils 44 defoliation 44 ants 44 frost 44 mildew 44 beneficial insects 44 milkweed 44 mosquito 44 lichens 44 Allergies 44 moth 44 nematode 44 particulates 44 lichen 44 warmer temperatures 44 pollinators 44 Mosquitoes 44 allergy 44 pheromones 44 ladybugs 43 frosts 43 fleas 43 deciduous trees 43 flowering 43 aerosols 43 flower buds 43 organisms 43 pollutant 43 blossoms 43 UV radiation 42 midges 42 chlorophyll