Yarrow, Rosea
Yarrow, Walther Funcke
Yarrow, White Daisy
Yarrow, Woolly
Yellow Dietes or Fortnight Lily
Yellow Wood, Virgilia
Yellow-Edge Elaeagnus
Yew Pine
Yew, English
Yew, English 'Spreading'
Yew, Irish
Yucca, Banana or Blue / Datil
Yucca, Variegated Gloriosa
Zebra Grass
Zinnia, Common
Zinnia, Common (Profusion Series)
Zinnia, Creeping 'Gold Braid'
Zinnia, Garden
Zinnia, Red Peter Pan
Zinnia, Small World Cherry