Related by context. Frequent words. (Click for all words.) 60 purple loosestrife 60 Phytophthora 60 anthracnose 59 Poison ivy 59 spotted knapweed 58 leaf blight 58 Emerald ash borer 57 fireweed 57 beetle infestations 57 tansy 57 invasive insect 57 hackberry 57 serviceberry 57 Invasive plants 57 hogweed 57 deciduous forests 56 Phragmites 56 cankers 55 Aphids 55 oak wilt 55 root rot 55 loosestrife 55 leafy spurge 55 giant hogweed 55 cordgrass 55 downy mildew 55 invasive weed 54 forbs 54 Scotch broom 54 grasses 54 barberry 54 spider mites 54 tent caterpillars 53 noxious weed 53 soybean aphid 53 deciduous tree 53 fungus 53 mealybug 53 flowering shrub 53 mealybugs 53 viburnum 53 fungal diseases 53 coniferous forests 53 Japanese knotweed 53 liriope 53 fungal pathogens 53 adelgids 52 spartina 52 tick borne 52 dieback 52 phragmites 52 powdery mildew 52 vetch 52 Gypsy moths 52 woody plants 52 hemlock trees 52 mold fungi 52 pampas grass 52 beetle infestation 52 invasives 52 bagworms 52 cheatgrass 52 viburnums 52 jack pine 51 ash borers 51 chickweed 51 garlic mustard 51 horsetail 51 Rhododendrons 51 skunk cabbage 51 defoliate 51 winterkill 51 urushiol 51 ragwort 51 knapweed 51 superweeds 51 fungal spores 51 Soybean rust 51 oxalis 51 groundcovers 51 woody stems 51 Botrytis 51 sawfly 51 vinca 51 invasive species 51 poison ivy 51 foxtail 51 shade tolerant 51 lupines 51 European corn borer 51 understory 51 apple scab 51 insect pests 51 lodgepole 51 evergreen shrub 51 ornamental shrubs 51 buckthorn 51 river birch 50 apple moth 50 herbaceous plants 50 coniferous trees