Orange Conebush
Orange Ice Plant
Orange Sedge
Orchid Annie Butterfly Bush
Orchid or Purple Rockrose
Oregon Grape
Oriental Fountain Grass
Ornamental Onion
Otto Quast Spanish Lavender
Our Lord's Candle
Owlswood Blue Ceanothus
Pacific Coast Irises
Pacific Madrone
Pacific Mist Manzanita
Pacific Sunset Flannel Bush
Pacific Wax Myrtle
Palo Brea
Paprika Fonos Bearded Iris