Windmill Palm, Hemp Palm
Winnifred Gilman Dark Blue Sage
Winter Savory
Wisley Pink Sun Rose
Woolly Blue Curls
Woolly Yarrow
Wright Buckwheat
Wulfen Euphorbia
Yankee Point California Lilac
Yellow Bahia
Yellow Bird Of Paradise
Yellow bulbine
Yellow Bush Lantana
Yellow Cosmos
Yellow Cotton
Yellow Dead Nettle
Yellow Eyed Grass
Yellow Lady Banks' Rose
Yellow Moraea, Fortnight Lily
Yellow Stalked Bulbine