'Gravetye' Lilac Cranesbill Gray Clubawn Grass 'Spiky Blue'
Graybeard Grass Grayleaf Cranesbill: cinereum 'Ballerina'
'Graziella' Maiden Grass Greasewood: apiana
Great Blue Lobelia (spp.) Great Blue Lobelia 'Blue Selection'
Great Coneflower 'Great Expectations' Common Yarrow
'Great Expectations' Hosta Great Leopard's Bane 'Gold Bunch'
Great Lobelia (spp.) Great Lobelia 'Blue Selection'
Great Masterwort Great Ragweed
Greater Bladderwort Greater Celandine
Greater Creeping Spearwort Greater Masterwort (spp.)
Greater Masterwort 'Shaggy' Greater Musk Mallow (spp.)
Greater Musk Mallow 'Fastigiata' Greater Periwinkle (spp.)
Greater Periwinkle 'Even Steven' Greater Periwinkle 'Gold Vein'
Greater Periwinkle Variegated Greater Wood Rush Grass (spp.)
Greater Wood Rush Grass Golden Grecian Windflower (spp.)
Greek Anemone (spp.) Greek Valerian (spp.)
Greek Valerian: reptans Green Aloe 'Mediopicta'
Green and Gold (spp.) Green and Gold 'Pierre'
'Green Apple' Sweet Scented Geranium Green Arrow Arum (spp.)
'Green Cape' Saltbush Green Carpet
'Green Carpet' Japanese Pachysandra Green Cockscomb
Green Flowered Milkweed 'Green Flutter' Daylily
'Green Gold' Hosta Green Headed Coneflower (spp.)
Green Headed Coneflower 'Goldquelle' Green Hellebore
'Green Lady' Chinese Evergreen Green Leopard Plant (spp.)
Green Leopard Plant 'Aureo-maculata' Green Leopard Plant 'Crispata'
'Green on Green' Swedish Ivy: forsteri Green Pea 'Royal Mix'
Green Ripple Pepper 'Green Sheen' Japanese Pachysandra
Green Taro (spp.) Green Taro 'Fontanesii'
Green Taro 'HawaiianŽ Black Coral' Green Taro 'Imperial'
Green Trillium Greenbrier, Common
Greenbrier, Roundleaf 'Greenheart Orange' Pot Marigold
Greenhouse Cyclamen Greens, Mustard 'Osaka Purple'
Greens, Mustard 'Red Giant' 'Greenstone' Raoulia
Gregg's Mistflower Greig's Tulip 'Red Reflexion'
'Grete Pungel' Astilbe Grey Heath 'Atropurpurea'
Grey-Head Coneflower Griffith's Spurge 'Fireglow'
Grinnell's Beardtongue Ground Cherry
Ground Clematis 'Purpurea' Ground Cover Comfrey (spp.)
Ground Elder (spp.) Ground Elder Variegated
Ground Ivy (spp.) Ground Ivy Variegated
Ground Laurel Ground Lemon
'Ground Master' Hosta Ground Morning Glory
Ground Plum Ground Spotted Aloe
Groundsel Groundsel, Barberton
Groundsel, Silver (spp.) Groundsel, Silver 'Cirrus'
Groundsel, Silver 'New Look' Groundsel, Silver 'Silver Lace'
Groundsel, Silver 'Silverdust' Groundsel, Silver 'Snowstorm'
Groundsel: hallianus 'Guacamole' Hosta
Guadalupe Mountain Penstemon 'Guardsman' Flax