Uinta Basin Hookless Cactus

Vinca major

( Walnut Queen Chrysanthemum )

Xmas tree

Maybe we should consider eliminating X Y and Z for this game?  After W, skip to A.  Just a thought?

At least X, but Y brings up Yellow this and that. I guess Z is also used up?
(Those are my five cents)

Yucca

Zebra Plant

Apple, Red Jonathan

Boronia

coriander

dianthus

edelweiss

(Douglas) Fir Tree

Gentia germanica

Hibiscus

Iris

juniper

Kiwi fruit

lavender

Macadamia

nasturtium

Oleander

Petunia

Quack grass

rose

Sweet pea

tulip

Uvularia (common names: bellwort, merrybells. Found only in North America.)

violet