Windmill Palm, Hemp Palm
Winifred Gillman Blue Sage
Winter Savory
Wintercreeper
Wisley Pink Sunrose
Woolly Blue Curls
Woolly Yarrow
Wright Buckwheat
Wulfen Euphorbia
Yankee Point California Lilac
Yarrow Moonshine
Yellow Bahia
Yellow Bird Of Paradise
Yellow bulbine
Yellow Bush Lantana
Yellow Dead Nettle
Yellow Eyed Grass
Yellow Lady Banks' Rose
Yellow Lavender Cotton
Yellow Moraea, Fortnight Lily