Woolly Cinquefoil Woolly Lip Fern
Woolly Speedwell Woolly Sunflower
Woolly Thyme 'Coccineus' Woolly Thyme 'Highland Cream'
Woolly Thyme 'Pink Chintz' Woolly Thyme 'Purple Beauty'
Woolly Thyme: lanuginosus Woolly Thyme: pseudolanuginosus
Woolly Yarrow (spp.) Wooly Blue Violet
Wooly Hawkweed Wooly Speedwell
Worm Grass Wormwood (spp.)
Wormwood, Beach (spp.) Wormwood, Beach 'Silver Brocade'
Wormwood, Coastal Strand (spp.) Wormwood, Coastal Strand 'David's Choice'
Wormwood, Large 'Powis Castle' Wormwood, Tree 'Powis Castle'
Wormwood, Wild (spp.) Wormwood, Wild 'Oriental Limelight'
Wormwood: alba Wormwood: austriaca
Wormwood: schmidtiana (spp.) Wormwood: schmidtiana 'Silver Mound'
Woundwort 'Robusta' Woundwort (spp.)
Woundwort 'Big Ears' Woundwort 'Helen von Stein'
Woundwort, Marsh Woundwort: albotomentosa
Woundwort: officinalis (spp.) Woundwort: officinalis 'Grandiflora'
Wrinkle-Leaf Goldenrod 'Fireworks' 'Wrinkles and Crinkles' Hosta
'Xiamen Bowl' Sacred Lotus 'Yagumo' Japanese Tree Peony
'Yaku Jima' Maiden Grass Yam Bean
Yanquapin 'Yaquina Blue' Tall Bearded German Iris
Yarrow 'King Edward' Yarrow 'Pomegranate'
Yarrow 'Sunny Seduction' Yarrow, Common (spp.)
Yarrow, Common 'Apple Blossom' Yarrow, Common 'Cerise Queen'
Yarrow, Common 'Fire King' Yarrow, Common 'Great Expectations'
Yarrow, Common 'Heidi' Yarrow, Common 'Moonshine'
Yarrow, Common 'Paprika' Yarrow, Common 'Pink Deb'
Yarrow, Common 'Red Beauty' Yarrow, Common 'Snowsport'
Yarrow, Common 'Summer Pastels' Yarrow, Common 'Summerwine'
Yarrow, Common 'Terra Cotta' Yarrow, Common 'Weser River Sandstone'
Yarrow, Common 'White Beauty' Yarrow, Dwarf Golden (spp.)
Yarrow, Egyptian Yarrow, Fernleaf (spp.)
Yarrow, Fernleaf 'Credo' Yarrow, Fernleaf 'Parker's Variety'
Yarrow, Golden Yarrow, Silvery
Yarrow, The Beacon Yarrow, Woolly (spp.)
Yarrow: ageratum Yarrow: ptarmica 'Nana Compacta'
Yarrow: ptarmica 'The Pearl' Yellow Adder's Tongue
Yellow Alder (spp.) Yellow Archangel (spp.)
Yellow Archangel 'Florentinum' Yellow Archangel 'Herman's Pride'
Yellow Archangel Variegated Yellow Asphodel (spp.)
'Yellow Bird' Orchid Yellow Bulbine
Yellow Chamomile (spp.) Yellow Chamomile 'Kelwayi'
Yellow Chamomile 'Moonlight' Yellow Chamomile 'Susanna Mitchell'
Yellow Chamomile 'Wargrave' Yellow Coneflower
Yellow Corydalis (spp.) Yellow Corydalis White
'Yellow Dancing Girl' Dancing Girl Ginger Yellow Dancing Ladies 'Yellow Dancing Girl'
Yellow Flag Iris (spp.) Yellow Flag Iris 'Flore-Plena'
Yellow Flag Iris Variegated Yellow Flag (spp.)
Yellow Flag 'Flore-Plena' Yellow Flag Variegated
Yellow Floating Heart Yellow Foxtail Grass 'Aureovariegatus'
Yellow Foxtail Grass Variegated Yellow Fumitory (spp.)
Yellow Fumitory White Yellow Ginger
'Yellow Hammer' Dahlia Yellow Hardhead
'Yellow Herald' Rusty Foxglove 'Yellow' Ice Plant: brunnthaleri
Yellow Indian Grass 'Indian Steel' Yellow Lady's Slipper
Yellow Loosestrife (spp.) Yellow Loosestrife 'Alexander'
Yellow Mallow Yellow Moccasin Flower
Yellow Nutsedge Yellow Oxeye Daisy
Yellow Pitcher Plant 'Peaches & Green' Yellow Sage 'Bante Rossa'
Yellow Sage: koyamae 'Yellow Sharp' Florist's Chrysanthemum
Yellow Shrimp Plant Yellow Snowflake
Yellow Spider Lily 'Yellow Splash' Chrysanthemum Pacificum
'Yellow Splash' Hosta Yellow Star Grass
Yellow Stargrass 'Yellow Stone' Daylily
Yellow Trillium Yellow Trout Lily
Yellow Trumpet 'Peaches & Green' 'Yellow Velvet' Monkey Flower
Yellow Wakerobin Yellow Water Weed
Yellow-eyed Grass Yellow-flowered Clivia