Southeastern Arizona plant common names that begin with Y.
- Yellow Bells
- Yellow Bird of Paradise
- Yellow Columbine
- Yellow Desert Evening Primrose
- Yellow Elder
- Yellow Indian Mallow
- Yellow Linanthus
- Yellow Menodora
- Yellow Oxalis
- Yellow Paloverde
- Yellow Sweet Clover
- Yellow Sweetclover
- Yellow Thimblehead
- Yellow Trefoil
- Yellow Trumpet Bush
- Yellow Trumpet-flower
- Yellow Trumpetbush
- Yellow Waterlily
- Yellow Wood Sorrel
- Yellow Zinnia
- Yellow-flower Indian-mallow
- Yellow-spine Thistle
- Yellowflower Indian Mallow
- Yellowspine Thistle
- Yerba de Venado
- Yerba Mansa
- Yerba Porosa
- Yucca, Banana
- Yucca, Datil
- Yucca, Mountain
- Yucca, Sierra Madre
- Yucca, Soaptree
- Yuma Sandmat
- Yuma Spurge