Oriental arborvitae
Oriental Poppy
Otto Quast Spanish Lavender
Our Lord's Candle
Owl's Clover
Paleleaf Yucca
Palmer's Agave
Palo Brea
Palo Verde Desert Museum
Palo Verde Thornless Hybrid
Paper Spine Cactus
Paperflower
Paprika Red Common Yarrow
Parry's Agave
Parry's Penstemon
Pecan
Perennial Hybrid Blanket flower
Perennial Marigold, Copper Canyon D