Oleander
Opal Alum Root Hybrid
Orange Clock Vine
Orange Crush Daylily
Orange Ice Plant
Orange Sedum
Orchid or Purple Rockrose
Oregon Ash
Oregon Grape
Oriental Arborvitae
Oriental Fountain Grass
Otto Quast Spanish Lavender
Our Lord's Candle
Pacific Coast Irises
Pacific Madrone
Pacific Mist Manzanita
Pacific Sunset Flannel Bush
Pacific Wax Myrtle
Pandora's Box Hybrid Daylily
Paperbark Tree, Cajeput Tree
