Plants: Y

• Yacon Smallanthus sonchifolius Root
• Yak Rhododendron Rhododendron yakushimanum Flowering shrub
• Yam Dioscorea Root
• Yam Dioscorea villosa Root
• Yaupon Holly Ilex vomitoria Leafy
• Yellow Bells Tecoma stans Flowering shrub
• Yellow Buckeye Aesculus flava Flowering tree
• Yellow Bush Lupine Lupinus arboreus Flowering shrub
• Yellow Coneflower Echinacea paradoxa Wildflower
• Yellow Corydalis Pseudofumaria lutea Creeping perennial
• Yellow Foxglove Digitalis grandiflora Garden perennial
• Yellow Giant Hyssop Agastache nepetoides
• Yellow Horned Poppy Glaucium flavum Wildflower
• Yellow Ice Plant Delosperma nubigenum Succulent
• Yellow Lady's Slipper Cypripedium parviflorum Wildflower
• Yellow Loosestrife Lysimachia punctata Garden perennial
• Yellow Mariposa Lily Calochortus luteus Wildflower
• Yellow Monkeyflower Mimulus guttatus Wildflower
• Yellow Oleander Thevetia peruviana Flowering shrub
• Yellow Passionflower Passiflora lutea Vine
• Yellow Rabbitbrush Chrysothamnus viscidiflorus
• Yellow Rain Lily Zephyranthes citrina Bulb
• Yellow Sand Verbena Abronia latifolia Creeping perennial
• Yellow Sneezeweed Helenium amarum Garden annual
• Yellow Spider Lily Lycoris aurea Garden perennial
• Yellow Spiderflower Cleome lutea Wildflower
• Yellow Sundrops Calylophus serrulatus Wildflower
• Yellow Trillium Trillium luteum Wildflower
• Yellow Trout Lily Erythronium americanum Wildflower
• Yellow Wild Indigo Baptisia sphaerocarpa Wildflower
• Yellowwood Cladrastis kentukea Flowering tree
• Yerba Buena Clinopodium douglasii Creeping perennial
• Yerba Mansa Anemopsis californica Creeping perennial
• Yesterday Today and Tomorrow Brunfelsia pauciflora Flowering shrub
• Yoshino Cherry Prunus × yedoensis Flowering tree
• Yulan Magnolia Magnolia denudata Flowering tree
• Yunnan Meadow Rue Thalictrum delavayi Garden perennial
• Yuzu Citrus junos Tree fruit