Common names: Y
- Yakushima rhododendron
- yam
- yarrow
- yellow alder
- yellow allamanda
- yellow anemone
- yellow aralia
- yellow archangel
- yellow asphodel
- yellow azalea
- yellow barleria
- yellow bedstraw
- yellow bellflower
- yellow birch
- yellow buckeye
- yellow bush lupin
- yellow catalpa
- yellow Caucasian peony
- yellow chamomile
- yellow cone flower
- yellow corydalis
- yellow cosmos
- yellow crocus
- yellow cryptantha
- yellow dog's tooth violet
- yellow drop
- yellow false indigo
- yellow figwort
- yellow flame tree
- yellow flax
- yellow foxglove
- yellow hawkweed
- yellow honeysuckle
- yellow horned poppy
- yellow iris
- yellow lady's slipper orchid
- yellow lavender
- yellow loosestrife
- yellow meadow rue
- yellow melilot
- yellow mignonette
- yellow monkey flower
- yellow monkshood
- yellow monkswort
- yellow oleander
- yellow oxeye
- yellow pea
- yellow pheasant's eye
- yellow pinwheel
- yellow pond lily
- yellow rattle
- yellow rocketcress
- yellow saraca
- yellow sarsaparilla
- yellow scabious
- yellow skunk cabbage
- yellow sneezeweed
- yellow sweet clover
- yellow tree lupin
- yellow tree peony
- yellow trumpet pitcher
- yellow wood
- yellow-vein eranthemum
- yellowhorn
- yellowwood
- yew
- Yezo spruce
- yucca