Yam, Chinese
Yam, Wild
Yarrow, Common
Yarrow, Western
Yellow Archangel
Yellow Bluestem
Yellow Buckeye
Yellow Corydalis
Yellow Daylily
Yellow Flower Leafcup
Yellow Foxtail
Yellow Giant Hyssop
Yellow Goatsbeard
Yellow Hawkweed
Yellow Iris
Yellow Jewelweed
Yellow King-Devil
Yellow Lady's Slipper
Yellow Nutsedge
Yellow Passionflower
Yellow Pimpernel
Yellow Pond-Lily
Yellow Rocket
Yellow Spring Bedstraw
Yellow Stargrass
Yellow Sundrops
Yellow Sweet Clover
Yellow Touch-Me-Not
Yellow Trillium
Yellow Trout Lily
Yellow Violet
Yellow Wild Indigo
Yellow Wood Sorrel
Yellowrocket, Early
Yellowrocket, Garden
Yellowroot
Yellowwood
Yellowwood, American
Yerba-de-Tajo
Yew, English
Yew, Japanese
Yucca
Zebra Grass
Zebrinus
Zigzag Goldenrod
Zigzag Spiderwort
Zinnia