'Oklahoma' Oklahoma Redbud Oklahoma Redbud 'Oklahoma'
Oklahoma Redbud 'Texas White' 'Oklahoma' Rose
Okra (spp.) Okra 'Burgundy'
Okra 'Little Lucy' 'Okukuji nishiki' Japanese Maple
'Okushimo' Japanese Maple 'Old Fashioned Rose' Geranium: Pelargonium
Old Fashioned Weigela (spp.) Old Fashioned Weigela 'Abel Carriere'
Old Fashioned Weigela 'Boskoop Glory' Old Fashioned Weigela 'Bristol Ruby'
Old Fashioned Weigela 'Candida' Old Fashioned Weigela 'Carnaval™'
Old Fashioned Weigela 'Darts Color Dream' Old Fashioned Weigela 'Eva Rathke'
Old Fashioned Weigela 'Eva Supreme' Old Fashioned Weigela 'Evita'
Old Fashioned Weigela 'Eyecatcher' Old Fashioned Weigela 'Fine Wine®'
Old Fashioned Weigela 'Foliis Purpureis' Old Fashioned Weigela 'Ghost™'
Old Fashioned Weigela 'Java Red' Old Fashioned Weigela 'Lucifer™'
Old Fashioned Weigela 'Midnight Wine®' Old Fashioned Weigela 'Minuet'
Old Fashioned Weigela 'My Monet™' Old Fashioned Weigela 'Nain Rouge'
Old Fashioned Weigela 'Newport Red' Old Fashioned Weigela 'Olympiad'
Old Fashioned Weigela 'Pink Delight' Old Fashioned Weigela 'Pink Princess'
Old Fashioned Weigela 'Polka' Old Fashioned Weigela 'Red Prince'
Old Fashioned Weigela 'Rosea' Old Fashioned Weigela 'Rubidor'
Old Fashioned Weigela 'Ruby Kins' Old Fashioned Weigela 'Rumba'
Old Fashioned Weigela 'Samba' Old Fashioned Weigela 'Sonic Bloom® Pearl'
Old Fashioned Weigela 'Sonic Bloom® Pink' Old Fashioned Weigela 'Sonic Bloom™ Red'
Old Fashioned Weigela 'Spilled Wine®' Old Fashioned Weigela 'Sunny Princess'
Old Fashioned Weigela 'Susanne' Old Fashioned Weigela 'Tango'
Old Fashioned Weigela 'Teline' Old Fashioned Weigela Variegated
Old Fashioned Weigela Variegated Dwarf Old Fashioned Weigela 'Versicolor'
Old Fashioned Weigela 'Victoria' Old Fashioned Weigela 'White Knight'
Old Field Juniper 'Old Gold' American Holly
'Old Gold' Chinese Juniper 'Old Gold' Rockcress: ferdinandi-coburgi
'Old Gold' Swedish Begonia: Plectranthus Old Maid (spp.)
Old Maid 'First Kiss Blueberry' Old Maid 'Parasol'
Old Maid 'Pastels Mix' Old Maid 'Pretty in Rose'
Old Maid 'Raspberry Cooler' Old Maid 'Rose Carpet'
Old Maid 'Stardust Mix' Old Maid 'Stardust Orchid'
Old Man and Woman 'Mrs. Giuseppi' Old Man Banksia
Old Man Cactus Old Man of the Mountains
Old Man Palm Old Man's Beard
Old Man's Beard: virginicus Old Man's Whiskers
'Old Red Moss' Rose Old Woman Cactus
Old Woman (spp.) Old Woman 'Silver Brocade'
'Old Yella' Mallow 'Oldhamiana' Norway Spruce
'Ole' Rose Oleander Leaved Protea (spp.)
Oleander Leaved Protea 'Pink Splash' Oleander (spp.)
Oleander 'Apple Blossom' Oleander 'Calypso'
Oleander 'Isle of Capri' Oleander 'Petite Pink'
Oleander 'Petite Salmon' Oleander 'Sister Agnes'
Oleander, Mexican Oleander, Yellow
Oleaster (spp.) Oleaster 'Frederici'
Oleaster Golden Oleaster 'Yellow Edge Variegated'
Oleaster: angustifolia Oleaster: ebbingeihybrid 'Coastal Gold'