Related by context. Frequent words. (Click for all words.) 59 horsetail 59 Phragmites 59 knapweed 59 salt cedar 58 alfalfa fields 58 invasive weeds 58 Invasive plants 58 Scotch broom 58 saltcedar 57 aquatic weeds 57 leafy spurge 56 whiteflies 56 spotted knapweed 56 mealybug 56 invasive weed 56 tamarisk 56 Eurasian milfoil 56 loosestrife 55 Hydrilla 55 noxious weed 55 bagworms 55 Herbicides 55 weeds 55 vetch 55 noxious weeds 54 buckthorn 54 junipers 54 acidic soils 54 carbaryl 54 defoliating 54 larvicides 54 knotweed 54 forested wetlands 54 salvinia 54 Fescue 54 Milfoil 54 melaleuca 54 Eurasian watermilfoil 54 fireweed 54 mealybugs 54 phragmites 53 hackberry 53 ragwort 53 anthracnose 53 sedge 53 sawfly 53 herbicides 53 piñon 53 Japanese knotweed 53 Bacillus thuringiensis 53 purple loosestrife 53 pigweed 53 spurge 53 hogweed 53 wheat stubble 53 foxtail 53 shrubby 52 buffelgrass 52 spider mites 52 pampas grass 52 cutworms 52 ornamental shrubs 52 aquatic weed 52 Controlled burns 52 downy mildew 52 forbs 52 bermudagrass 52 Nematodes 52 pyrethrins 52 bark mulch 52 cordgrass 52 whitefly 52 tall fescue 51 oxalis 51 cattail 51 Phytophthora 51 Ponderosa pine 51 Malathion 51 lodgepole 51 ceanothus 51 chickweed 51 brome 51 hickories 51 Weed Control 51 Rotenone 51 herbicide 51 giant salvinia 51 insect infestations 51 alkaline soil 51 Herbicide 51 barberry 51 conifer trees 51 Infestations 51 defoliate 50 Aphids 50 Bti 50 citrus orchards 50 Emerald ash borer 50 deciduous forests 50 blackberry bushes 50 multiflora rose