Related by context. Frequent words. (Click for all words.) 60 arid climates 56 temperate climates 55 alkaline soils 55 tropical climates 54 harsh climates 54 Spider mites 54 humid climates 54 subtropical climate 54 acidic soils 54 periodic droughts 53 cold climates 53 warm climates 53 pasture grasses 52 drained soils 51 alkaline soil 51 photoperiod 51 hotter drier 51 tropics 51 humid tropical 51 moist soils 51 Aphid 50 cooler climates 50 epiphytes 50 temperate zones 50 tuberous begonias 50 subtropics 50 prolonged droughts 50 salt tolerant 50 Dust mites 49 temperate regions 49 overwatered 49 warmer climates 49 warmer drier 49 humid summers 49 colder climates 49 micro climates 49 subtropical regions 49 drier summers 49 perennial grasses 48 sunny climates 48 Subtropical 48 cucurbits 48 subterranean termites 48 fescues 48 Fruit flies 48 wetter winters 48 Migrating birds 48 desiccation 48 turfgrasses 48 cold hardiness 48 La Ninas 47 tropical climes 47 inoculants 47 severe droughts 47 pollen allergies 47 Raised beds 47 Cyanobacteria 47 Powdery mildew 47 nitrogen fixing 47 climatic conditions 47 zoysia 46 leafhoppers 46 Succulents 46 Petunias 46 photosynthesize 46 climates 46 Flowering plants 46 shelterbelts 46 cacao trees 46 milkweeds 46 flowering annuals 46 hardier 46 Temperate 46 herbaceous perennials 46 deciduous shrubs 46 temperate forests 46 drought tolerant 46 forbs 46 lantanas 46 tall fescue 45 temperature inversions 45 Nitrogen oxides 45 windblown dust 45 hotter summers 45 El Niños 45 mold fungi 45 herbicide resistant crops 45 corn borers 45 refugia 45 cooler wetter 45 tropical 45 Ice Ages 45 pest infestation 45 waterhemp 45 colder winters 45 funguses 45 corn earworm 45 coniferous forests 45 caladiums 45 pigeon pea 45 soil salinity