'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 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 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 Greenhouse Cyclamen
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
'Guernsey Cream' Hybrid Clematis 'Guizhou' White Mugwort
'Gulang Red' Sacred Lotus