Common Plant Names beginning with O

O Isami Maple ( Acer japonicum )	O Niji Camellia ( Camellia japonica )
O Sole Mio Fuchsia ( Fuchsia )	O Taki Maple ( Acer japonicum )
OConnor Juniper ( Juniperus virginiana )	OHenry Peach ( Prunus persica )
OOdham Dipper White Flowered Gourd ( Lagenaria Siceraria )	OOdham Small Bilobal White Flowered Gourd ( Lagenaria Siceraria )
OSpring Holly ( Ilex cornuta )	Oachs ( Ilex opaca )
Oadi Begonia ( Begonia Oadi )	Oak Grove No 1 ( Ilex opaca )
Oak Grove No 2 ( Ilex opaca )	Oak Hill No 1 ( Ilex opaca )
Oak Leaf Acanthus ( Acanthus mollis )	Oak Leaf Common Laburnum ( Laburnum anagyroides )
Oak Leaf Lettuce ( Lactuca sativa )	Oakington Jewel Coral Flower ( Heuchera brizoides )
Oakland Fuchsia ( Fuchsia )	Oaklea Red Penstemon ( Penstemon )
Oakleaf Hydrangea ( Hydrangea quercifolia )	Oakleaf Tiarella ( Tiarella wherryi )
Oaxacan Green Dent Corn ( Zea mays )	Oban Iris ( Iris )
Obconica Primrose ( Primula obconica )	Obdam Narcissus ( Narcissus )
Obelisk Chinese Juniper ( Juniperus chinensis )	Obelisk Gladiolus ( Gladiolus )
Obergdrtner Nietner Mollis Hybrid Azalea ( Rhododendron )	Oberon Freesia ( Freesia )
Oberon Fuchsia ( Fuchsia )	Oberon Prairie Mallow ( Sidalcea malviflora )
Oberon Torch Azalea ( Rhododendron kaempferi )	Obliqua Begonia ( Begonia obliqua )
Obovata Firedragon ( Acalypha wilkesiana )	Obovata Peony ( Paeonia obovata )
Obscura Begonia ( Begonia obscura )	Obscura Marginata Hosta ( Hosta )
Ocala Begonia ( Begonia Ocala )	Ocampoi Cactus ( Parodia ocampoi )
Occidentale Lily ( Lilium occidentale )	Occold Lagoon Geranium ( Pelargonium )
Ocean Beach Fuchsia ( Fuchsia )	Ocean Gold Western Azalea ( Rhododendron occidentale )
Ocean Mist Western Azalea ( Rhododendron occidentale )	Ocean Spray Maidenhair Fern ( Adiantum raddianum )
Oceanas Summer Pole Bean ( Phaseolus vulgaris )	Oceanside Begonia ( Begonia Oceanside )
Ochroleuca Ghent Hybrid Azalea ( Rhododendron hybrida )	Ochroleuca Potentilla ( Potentilla fruticosa )
Ocmulgee Crapemyrtle ( Lagerstroemia indica )	Oconee Azalea ( Rhododendron flammeum )
Oconee Bells ( Shortia galacifolia )	Oconee Sweetgum ( Liquidambar styraciflua )
Octavia Hill Rose ( Rosa )	Octavian Robin Hill Azalea ( Rhododendron hybrida )
October Brilliance Red Maple ( Acer rubrum )	October Glory Flowering Dogwood ( Cornus florida )
October Glory Red Maple ( Acer rubrum )	October Glow ( Ilex opaca )
Octopus Agave ( Agave vilmoriniana )	Octopus Tree ( Schefflera actinophylla )
Odalisque Hardy Water Lily ( Nymphaea )	Odalisque Tulip ( Tulipa pulchella )
Odawa Indian Bush Bean ( Phaseolus vulgaris )	Odd Ball Fuchsia ( Fuchsia )
Odd Beauty Fuchsia ( Fuchsia )	Oddity Hens and Chicks ( Sempervivum tectorum )
Ode to Beauty African Violet ( Saintpaulia ionantha )	Odessa Zucchini Summer Squash ( Cucurbita pepo )
Odessey Begonia ( Begonia Odessey )	Odeteiantha Begonia ( Begonia odeteiantha )
Odile Peony ( Paeonia lactiflora )	Odin Mollis Hybrid Azalea ( Rhododendron )
Odontoglossum Orchid ( Odontoglossum spectatissimum )	Odorata Crabapple ( Malus baccata )
Odyssey Corn ( Zea mays )	Oekonomierat Echtermeyer Flowering Crabapple ( Malus hybrida )
Official Magnolia ( Magnolia officinalis )	Ogallala Strawberry ( Fragaria )
Ogden Melon ( Cucumis melo )	Ogeechee Tupelo ( Nyssa ogeche )
Ogi no Odorikaraki Kurume Azalea ( Rhododendron )	Ogikasane Kurume Azalea ( Rhododendron )
Ogon False Holly ( Osmanthus heterophyllus )	Ogon Japanese Rush ( Acorus gramineus )
Ogon Spirea ( Spiraea thunbergii )	Ogon no Mai Satsuki Azalea ( Rhododendron hybrida )
Ogon no Tsuki Satsuki Azalea ( Rhododendron hybrida )	Oh Boy Fuchsia ( Fuchsia )
Oh My Satsuki Azalea ( Rhododendron hybrida )	Oh No Begonia ( Begonia Oh No )
Oh Razzberries Begonia ( Begonia Oh Razzberries )	Ohio Buckeye ( Aesculus glabra )
Ohio King ( Ilex opaca )	Ohio MR 13 Pink Tomato ( Lycopersicon esculentum )
Ohio Queen ( Ilex opaca )	Ohlendorffii American Arborvitae ( Thuja occidentalis )
Ohlendorffii Norway Spruce ( Picea abies )	Oimatsu Kurume Azalea ( Rhododendron )
Oino Mezame Kurume Azalea ( Rhododendron )	Ojai Begonia ( Begonia Ojai )
Ojo de Cabro Bean ( Phaseolus vulgaris )	Okame Nandina ( Nandina domestica )
Okina Nishiki Satsuki Azalea ( Rhododendron hybrida )	Okinawa Peony ( Paeonia lactiflora )
Oklahoma Delaware Blue Corn ( Zea mays )	Oklahoma Delaware White Corn ( Zea mays )
Oklahoma Eastern Redbud ( Cercis canadensis )	Oklahoma Zinnia ( Zinnia elegans )
Okrent ( Ilex opaca )	Okusankichi Asian Pear ( Pyrus pyrifolia )
Olaf Tulip ( Tulipa )	Olbrichii False Cypress ( Chamaecyparis lawsoniana )
Old Black Rose ( Rosa )	Old Blush China Rose ( Rosa )
Old Candy Pink Penstemon ( Penstemon )	Old Del Monte Fuchsia ( Fuchsia )
Old Double White Camellia ( Camellia japonica )	Old Faithful ( Ilex opaca )
Old Faithful Gable Hybrid Azalea ( Rhododendron )	Old Faithful Peony ( Paeonia lactiflora )
Old Fashioned Soldier Bush Bean ( Phaseolus vulgaris )	Old Field Birch ( Betula populifolia )
Old Glory Rose ( Rosa )	Old Gold ( Ilex opaca )
Old Gold Chinese Juniper ( Juniperus chinensis )	Old Gold Exbury Azalea ( Rhododendron )
Old Heavy Berry American Holly ( Ilex opaca )	Old Lace Begonia ( Begonia Old Lace )
Old Lace Fuchsia ( Fuchsia )	Old Lace Maidenhair Fern ( Adiantum raddianum )
Old Lace Peony ( Paeonia lactiflora )	Old Leather Leaf ( Ilex opaca )
Old Maid ( Catharanthus roseus )	Old Mans Bones Sedum ( Sedum divergens )
Old Master Rose ( Rosa )	Old Mexico Zinnia ( Zinnia haageana )
Old Port Camellia ( Camellia japonica )	Old Port Catawba Rhododendron ( Rhododendron catawbiense )
Old Siwash Peony ( Paeonia lactiflora )	Old Smokey Begonia ( Begonia Old Smokey )
Old Smoky Fuchsia ( Fuchsia )	Old Spanish Rose Rose ( Rosa )
Old Spice Geranium ( Pelargonium )	Old Time Sanguinea Begonia ( Begonia Old Time Sanguinea )
Old Westbury Yew ( Taxus media )	Old White Egg Eggplant ( Solanum melongena )
Old Witch Begonia ( Begonia Old Witch )	Old Woman Begonia ( Begonia Old Woman )
Old Yellow Dusty Miller Primrose ( Primula )	Old mans beard ( Chionanthus virginicus )
Old-Fashioned Fuchsia ( Fuchsia )	Old-fashioned Weigela ( Weigela florida )
Olde Fragrance Rose ( Rosa )	Oldhams Bamboo ( Bambusa oldhamii )
Ole Pepperpot Capsicum Pepper ( Capsicum annuum )	Ole Sorenson Begonia ( Begonia Ole Sorenson )
Oleander ( Nerium oleander )	Olearia Combers Pink ( Olearia phlogopappa )
Oleifera Camellia ( Camellia oleifera )	Oleosus Bamboo ( Pleioblastus oleosus )
Olfri Begonia ( Begonia Olfri )	Olga Crabapple ( Malus )
Olga Holly ( Ilex cornuta )	Olga Mezitt P.J.M. Rhododendron ( Rhododendron )
Olga Niblett Robin Hill Azalea ( Rhododendron hybrida )	Olga Orchid ( Odontonia )
Olga Teupel Begonia ( Begonia Olga Teupel )	Olia Pear ( Pyrus communis )
Olive Bailey Langdon Daylily ( Hemerocallis hybrida )	Olive Coleus ( Solenostemon scutellarioides )
Olive Jackson Fuchsia ( Fuchsia )	Olive Milliman Begonia ( Begonia Olive Milliman )
Olive Smith Fuchsia ( Fuchsia )	Olive Squash ( Cucurbita maxima )
Oliver Brussels Sprout ( Brassica oleracea )	Oliver Wyatt Lily ( Lilium parryi )
Olivette Blanche Grape ( Vitis vinifera )	Olivier de Serres Common Lilac ( Syringa vulgaris )
Ollioules Tulip ( Tulipa )	Olmeca Bamboo ( Olmeca recta )
Olmsted Norway Maple ( Acer platanoides )	Olympia Red Begonia ( Begonia Olympia Red )
Olympia Spinach ( Spinacia oleracea )	Olympiad Fuchsia ( Fuchsia )
Olympiad Rose ( Rosa )	Olympiad Tall Bearded Iris ( Iris )
Olympic Fire Mountain Laurel ( Kalmia latifolia )	Olympic Flame Tulip ( Tulipa )
Olympic Gold Narcissus ( Narcissus )	Olympic Hybrids Lily ( Lilium )
Olympic Lass Fuchsia ( Fuchsia )	Olympic Tomato ( Lycopersicon esculentum )
Olympic Wedding Mountain Laurel ( Kalmia latifolia )	Olympica Bellflower ( Campanula rotundifolia )
Olympus Sweet Cherry ( Prunus )	Omaha Japanese Plum ( Prunus salicina )
Omar Pasha Fuchsia ( Fuchsia )	Omarana Tropical Water Lily ( Nymphaea )
Omars Cup Siberian Iris ( Iris sibirica )	Omars Touch Arilbred Bearded Iris ( Iris )
Omati Begonia ( Begonia Omati )	Omega Lily ( Lilium )
Omega Phlox ( Phlox maculata )	Omei Rose ( Rosa omeiensis )
Omen Glenn Dale Azalea ( Rhododendron hybrida )	Omeomy Fuchsia ( Fuchsia )
Omoi no Maku Satsuki Azalea ( Rhododendron hybrida )	Omoine Kurume Azalea ( Rhododendron )
On Target Begonia ( Begonia On Target )	Onahama Peony ( Paeonia lactiflora )
Onaveno Corn ( Zea mays )	Onaway Potato ( Solanum tuberosum )
Oncidium Orchid ( Oncidium pusillum )	Oncocyclus Bearded Iris ( Iris iberica )
Oncocyclus bearded Iris ( Iris iberica, subsp. elegantissima )	One in the Ring Fuchsia ( Fuchsia )
One-O-One Exbury Azalea ( Rhododendron )	One-leaved Ash ( Fraxinus excelsior )
Oneda Lake Begonia ( Begonia Oneda Lake )	Oneida Linden Viburnum ( Viburnum dilatatum )
Onetia Holland Camellia ( Camellia japonica )	Onion ( Allium affatunense )
Onland Blue Common Periwinkle ( Vinca minor )	Onna Fuchsia ( Fuchsia )
Onondaga Peony ( Paeonia lactiflora )	Onondaga Sargent Viburnum ( Viburnum sargentii )
Onsho Satsuki Azalea ( Rhododendron hybrida )	Ontario Grape ( Vitis )
Ontario Hybrid Red 775 Tomato ( Lycopersicon esculentum )	Onward Pear ( Pyrus communis )
Oodham Pink Bean ( Phaseolus vulgaris )	Oogata Fukuyu Tomato ( Lycopersicon esculentum )
Oogocho Kurume Azalea ( Rhododendron )	Oosterwijk Holly ( Ilex verticillata )
Oouchi Yama Kurume Azalea ( Rhododendron )	Opaal Hinoki False Cypress ( Chamaecyparis obtusa )
Opal Hamilton Peony ( Paeonia lactiflora )	Opalescent Fuchsia ( Fuchsia )
Opaline Begonia ( Begonia Opaline )	Opera Glenn Dale Azalea ( Rhododendron hybrida )
Opera Summer Lilac ( Buddleia davidii )	Ophelia Mollis Hybrid Azalea ( Rhododendron )
Ophelia Rose ( Rosa )	Ophelia Torch Azalea ( Rhododendron kaempferi )
Opherie Ghent Hybrid Azalea ( Rhododendron hybrida )	Ophiopogon Spicata ( Liriope spicata )
Ophrys Orchid ( Ophrys lutea )	Opipara Hosta ( Hosta )
Opium Poppy ( Papaver somniferum )	Opopeo Amaranth ( Amaranthus cruentus )
Optic Illusion Dahlia ( Dahlia )	Optica Stone Plant ( Lithops optica )
Optima Begonia ( Begonia Optima )	Optima Ghent Hybrid Azalea ( Rhododendron hybrida )
Optima Lettuce ( Lactuca sativa )	Optima Mauve Pink Camellia ( Camellia japonica )
Optima Pink Sport Camellia ( Camellia japonica )	Optima Rosea Camellia ( Camellia japonica )
Optimara Colorado African Violet ( Saintpaulia ionantha )	Optuntia Cactus ( Opuntia optuntia )
Opuntia Cactus ( Opuntia atrovirens )	Ora Wilson Begonia ( Begonia Ora Wilson )
Oracle Glenn Dale Azalea ( Rhododendron hybrida )	Oranea Mollis Hybrid Azalea ( Rhododendron )
Orange Appeal Geranium ( Pelargonium )	Orange Ball Ilam Hybrid Azalea ( Rhododendron )
Orange Beauty Kurume Azalea ( Rhododendron )	Orange Beauty Torch Azalea ( Rhododendron kaempferi )
Orange Blossom Hardy Water Lily ( Nymphaea )	Orange Bouquet Tulip ( Tulipa )
Orange Boy Tulip ( Tulipa kaufmanniana )	Orange Cassini Tulip ( Tulipa )
Orange Chimes Belgian Indian Hybrid Azalea ( Rhododendron )	Orange Cling Peach ( Prunus persica )
Orange Cocktail Fuchsia ( Fuchsia )	Orange Coral Bell Kurume Azalea ( Rhododendron )
Orange Crush Fuchsia ( Fuchsia )	Orange Cup Kurume Azalea ( Rhododendron )
Orange Delight Begonia ( Begonia Orange Delight )	Orange Drops Fuchsia ( Fuchsia )
Orange Elite Tulip ( Tulipa )	Orange Emperor Tulip ( Tulipa )
Orange Favorite Kaempferi Hybrid Azalea ( Rhododendron kaempferi )	Orange Favorite Tulip ( Tulipa )
Orange Flame Oregon grape ( Mahonia aquifolium )	Orange Flare Fuchsia ( Fuchsia )
Orange Giant Amaranth ( Amaranthus cruentus )	Orange Giant Torch Azalea ( Rhododendron kaempferi )
Orange Globe Trollius ( Trollius cultorum )	Orange Glory Fuchsia ( Fuchsia )
Orange Glory Peony ( Paeonia lactiflora )	Orange Glow Fuchsia ( Fuchsia )
Orange Glow Mollis Hybrid Azalea ( Rhododendron )	Orange Goblet Tulip ( Tulipa )
Orange Gold Peony ( Paeonia lactiflora )	Orange Grande Capsicum Pepper ( Capsicum annuum )
Orange Jelly Turnip ( Brassica rapa )	Orange King Bougainvillea ( Bougainvillea buttiana )
Orange King Calendula ( Calendula officinalis )	Orange King California Poppy ( Eschscholzia californica )
Orange King Fuchsia ( Fuchsia )	Orange King Temple Bells ( Smithiantha )
Orange King Torch Azalea ( Rhododendron kaempferi )	Orange Lace Peony ( Paeonia lactiflora )
Orange Lantana ( Lantana montevidensis )	Orange Man Ghent Hybrid Azalea ( Rhododendron hybrida )
Orange Melon ( Cucumis melo )	Orange Mirage Fuchsia ( Fuchsia )
Orange Monarch Tulip ( Tulipa )	Orange Nassau Tulip ( Tulipa )
Orange Oxheart Tomato ( Lycopersicon esculentum )	Orange Parade Begonia ( Begonia Orange Parade )
Orange Perfection Garden Phlox ( Phlox paniculata )	Orange Pride Southern Indian Hybrid Azalea ( Rhododendron )
Orange Princess Trollius ( Trollius cultorum )	Orange Queen Daffodil ( Narcissus jonquilla )
Orange Queen Fuchsia ( Fuchsia )	Orange Queen Poppy ( Eschscholzia californica )
Orange Queen Tomato ( Lycopersicon esculentum )	Orange Queen heather ( Calluna vulgaris )
Orange Ricard Geranium ( Pelargonium )	Orange Rubra Begonia ( Begonia Orange Rubra )
Orange Sander Belgian Indian Azalea ( Rhododendron )	Orange Sensation Rose ( Rosa )
Orange Sherbet Greenwood Hybrid Azalea ( Rhododendron )	Orange Slices Tall Bearded Iris ( Iris )
Orange Star Zinnia ( Zinnia haageana )	Orange Sun Tulip ( Tulipa )
Orange Sunblaze Rose ( Rosa )	Orange Supreme Begonia ( Begonia Orange Supreme )
Orange Supreme Exbury Azalea ( Rhododendron )	Orange Sweet Apple ( Malus domestica )
Orange Tiger Standard Dwarf Bearded Iris ( Iris )	Orange Toronto Tulip ( Tulipa )
Orange Triumph Lily ( Lilium )	Orange Triumph Rose ( Rosa )
Orange Triumph Tulip ( Tulipa )	Orange Truffles Knap Hill Azalea ( Rhododendron )
Orange Wonder Tulip ( Tulipa )	Orangeade Begonia ( Begonia Orangeade )
Orangeade Knap Hill Azalea ( Rhododendron )	Orangefeuer Begonia ( Begonia Orangefeuer )
Oranges and Lemons Rose ( Rosa )	Orania Begonia ( Begonia Orania )
Oranje Boven Fuchsia ( Fuchsia )	Oranje Van Os Fuchsia ( Fuchsia )
Oratorio Tulip ( Tulipa )	Orb Begonia ( Begonia Orb )
Orbec Orchid ( Odontocidium )	Orbit Magnolia ( Magnolia grandiflora )
Orcas Pear ( Pyrus communis )	Orchardgrass ( Dactylis glomerata )
Orchid ( Orchid )	Orchid Beauty Summer Lilac ( Buddleia davidii )
Orchid Cactus ( Nopalxochia )	Orchid Lights Northern Lights Azalea ( Rhododendron )
Orchid Pepper ( Capsicum baccatum )	Orchid Pericat Hybrid Azalea ( Rhododendron )
Orchid Pink Camellia ( Camellia japonica )	Orchid Rockrose ( Cistus purpureus )
Orchid Star ( Nymphaea flavovirens )	Orchid Star Pentas ( Pentas )
Orchioides Cape Cowslip ( Lachenalia orchioides )	Orchiphilla Belgian Indian Azalea ( Rhododendron )
Ordono Pepper ( Capsicum annuum )	Ore Beni Kurume Azalea ( Rhododendron )
Oregon Ash ( Fraxinus latifolia )	Oregon Boxwood ( Paxistima myrtifolia )
Oregon Crabapple ( Malus fusca var. levipes )	Oregon Crested Hinoki False Cypress ( Chamaecyparis obtusa )
Oregon Eleven Tomato ( Lycopersicon esculentum )	Oregon Fuchsia ( Fuchsia )
Oregon Giant Pole Bean ( Phaseolus vulgaris )	Oregon Giant Snow Pea ( Pisum sativum )
Oregon Grapeholly ( Mahonia aquifolium )	Oregon Maple ( Acer macrophyllum )
Oregon Pioneer Shelling Pea ( Pisum sativum )	Oregon Pride Kaempferi Hybrid Azalea ( Rhododendron kaempferi )
Oregon Pride Norway Maple ( Acer platanoides )	Oregon Pride Tomato ( Lycopersicon esculentum )
Oregon Spring Tomato ( Lycopersicon esculentum )	Oregon Star Tomato ( Lycopersicon esculentum )
Oregon State U Begonia ( Begonia Oregon State U )	Oregon Sugar Pod II Snow Pea ( Pisum sativum )
Oregon Sugar Pod Snow Pea ( Pisum sativum )	Oregon Sunset Begonia ( Begonia Oregon Sunset )
Oregon Trail Fuchsia ( Fuchsia )	Oregon Trail Shelling Pea ( Pisum sativum )
Oregon Vine Maple ( Acer circinatum )	Oregon White Oak ( Quercus garryana )
Oregon grape ( Mahonia x media )	Oreola Holly ( Ilex attenuata )
Organdy Mixture Begonia ( Begonia Organdy Mixture )	Organensis Passionflower ( Passiflora organensis )
Organza Fuchsia ( Fuchsia )	Orient Exbury Azalea ( Rhododendron )
Orient Express Cucumber ( Cucumis sativus )	Orient Express Eggplant ( Solanum melongena )
Orient Express Fuchsia ( Fuchsia )	Orient Express Tulip ( Tulipa )
Orient Pear ( Pyrus communis )	Oriental Arborvitae ( Thuja orientalis )
Oriental Beauty Tulip ( Tulipa )	Oriental Beech ( Fagus orientalis )
Oriental Gold Peony ( Paeonia lactiflora )	Oriental Lace Fuchsia ( Fuchsia )
Oriental Lantern Fuchsia ( Fuchsia )	Oriental Music Begonia ( Begonia Oriental Music )
Oriental Night Sweet Alyssum ( Lobularia maritima )	Oriental Oak ( Quercus variabilis )
Oriental Photinia ( Photinia villosa )	Oriental Poppy ( Papaver orientale )
Oriental Princess Fuchsia ( Fuchsia )	Oriental Spicebush ( Lindera benzoin )
Oriental Splendour Tulip ( Tulipa )	Oriental Spruce ( Picea orientalis )
Oriental Sunrise Fuchsia ( Fuchsia )	Oriental Sweetgum ( Liquidambar orientalis )
Oriental White Oak ( Quercus aliena )	Orientale Exbury Azalea ( Rhododendron )
Orientale Fountain Grass ( Pennisetum orientale )	Oriflamme Glenn Dale Azalea ( Rhododendron hybrida )
Orin Apple ( Malus domestica )	Oriole Apple ( Malus domestica )
Oriole Capsicum Pepper ( Capsicum annuum )	Oriole Fuchsia ( Fuchsia )
Oriole Holly ( Ilex attenuata )	Orion ( Fritillaria meleagris )
Orion Fuchsia ( Fuchsia )	Orion Kurume Azalea ( Rhododendron )
Orison Glenn Dale Azalea ( Rhododendron hybrida )	Orlando Pride ( Ilex opaca )
Orlando Roberts Peony ( Paeonia lactiflora )	Orleans Reinette Apple ( Malus domestica )
Ormistron Roy Flowering Crabapple ( Malus hybrida )	Ormswell Meconopsis ( Meconopsis sheldonii )
Ornament Tulip ( Tulipa )	Ornamental Pepper ( Capsicum annuum )
Ornamental Popcorn Corn ( Zea mays )	Ornita Begonia ( Begonia Ornita )
Ornithophora Orchid ( Ornithophora radicans )	Oroma Tomato ( Lycopersicon esculentum )
Orpha C. Fox Begonia ( Begonia Orpha C. Fox )	Orphan Begonia ( Begonia Orphan )
Orpheus Glenn Dale Azalea ( Rhododendron hybrida )	Orpine ( Sedum telephium )
Orrell Begonia ( Begonia Orrell )	Ortega Capsicum Pepper ( Capsicum annuum )
Ortega Grape ( Vitis vinifera )	Ortgiesiana Alba Tropical Water Lily ( Nymphaea )
Ortgiesiana Rubra Tropical Water Lily ( Nymphaea )	Orthenburger Festival Fuchsia ( Fuchsia )
Ortley Apple ( Malus domestica )	Orville Fay Iris ( Iris )
Orwell Fuchsia ( Fuchsia )	Orwell Knap Hill Azalea ( Rhododendron )
Oryx Western Azalea ( Rhododendron occidentale )	Osage Crapemyrtle ( Lagerstroemia indica )
Osage Gladiolus ( Gladiolus primulinus )	Osage Orange ( Maclura pomifera )
Osage Peony ( Paeonia lactiflora )	Osakazuki Satsuki Azalea ( Rhododendron hybrida )
Osaraku Kurume Azalea ( Rhododendron )	Osborn Prolific Fig ( Ficus carica )
Oscar I Ghent Hybrid Azalea ( Rhododendron hybrida )	Osceola Begonia ( Begonia Osceola )
Oshio Beni Japanese Maple ( Acer palmatum )	Osiris Lotus ( Nelumbo )
Oslo Daffodil ( Narcissus )	Osman Crabapple ( Malus )
Osmarea ( Osmarea )	Osmin Sweet Basil ( Ocimum basilicum )
Osmington Narcissus ( Narcissus )	Osota Begonia ( Begonia Osota )
Osprey ( Tradescantia Andersoniana Group )	Osprey Knap Hill Azalea ( Rhododendron )
Osprey Penstemon ( Penstemon )	Osprey Plantain Lily ( Hosta )
Ossi Oswalda Tulip ( Tulipa )	Ostara Dutch Hyacinth ( Hyacinthus orientalis )
Ostbo Red Mountain Laurel ( Kalmia latifolia )	Ostfriesland or East Friesland Sage ( Salvia superba )
Ostii Peony ( Paeonia ostii )	Ostrich Fern ( Matteucia struthiopteris )
Ostrowskiana Tulip ( Tulipa ostrowskiana )	Oswald de Kerchove Mollis Hybrid Azalea ( Rhododendron )
Otahuhu Beauty Camellia ( Camellia japonica )	Otaksa Hydrangea ( Hydrangea macrophylla )
Otatea Bamboo ( Otatea fimbriata )	Othello Begonia ( Begonia Othello )
Othello Black Bamboo ( Phyllostachys nigra )	Othello Fuchsia ( Fuchsia )
Othello Kaempferi Hybrid Azalea ( Rhododendron kaempferi )	Other Fellow Fuchsia ( Fuchsia )
Otohime Rose ( Rosa )	Otome Camellia ( Camellia rusticana )
Otome Kurume Azalea ( Rhododendron )	Otome Pink Chrysanthemum ( Chrysanthemum )
Otome Satsuki Azalea ( Rhododendron hybrida )	Otome Zakura Satsuki Azalea ( Rhododendron hybrida )
Otome gokora Kyushu Azalea ( Rhododendron kiusianum )	Otome no Mai Satsuki Azalea ( Rhododendron hybrida )
Otto Alfred Begonia ( Begonia Otto Alfred )	Otto Froebel Peony ( Paeonia lactiflora )
Otto Fuchsia ( Fuchsia )	Otto Furst Fuchsia ( Fuchsia )
Otto Hacker Begonia ( Begonia Otto Hacker )	Otto Krunze Fuchsia ( Fuchsia )
Otto Lilienthal Mollis Hybrid Azalea ( Rhododendron )	Otto Luyken English Laurel ( Prunus laurocerasus )
Ottonis Begonia ( Begonia ottonis )	Ottonis Cactus ( Parodia ottonis )
Otzeniana Living Stone ( Lithops otzeniana )	Ouachita Gold Peach ( Prunus persica )
Ouchiyama Kurume Azalea ( Rhododendron )	Oudemansii Douglas Fir ( Pseudotsuga menziesii )
Ougon-Kou Chiku Bamboo ( Phyllostachys sulphurea )	Our Indian Begonia ( Begonia Our Indian )
Our Sacha Rose ( Rosa )	Our Ted Fuchsia ( Fuchsia )
Our Vanilla Rose ( Rosa )	Outback Sunset Dense-Flowered Loosestrife ( Lysimachia congestiflora )
Outpost Canadian Hemlock ( Tsuga canadensis )	Outrageous Daylily ( Hemerocallis hybrida )
Ouvrardii Cretan Brake ( Pteris cretica )	Ovalifolia Japanese Spiraea ( Spiraea japonica )
Ovata ( Strelitzia reginae )	Ovation Fuchsia ( Fuchsia )
Overcup Oak ( Quercus lyrata )	Overeynderi English Yew ( Taxus baccata )
Overeynderi False Cypress ( Chamaecyparis lawsoniana )	Owatarii Pseudosasa ( Pseudosasa owatarii )
Owens Pfitzer Chinese Juniper ( Juniperus chinensis )	Ox-eye Daisy ( Chrysanthemum leucanthemum )
Oxford Blue ( Nigella damascena )	Oxford Blue Annual Clary Sage ( Salvia viridis )
Oxford Tulip ( Tulipa )	Oxfords Elite Tulip ( Tulipa )
Oxlip Primrose ( Primula elatior )	Oxydol Exbury Azalea ( Rhododendron )
Oxypetalum Lily ( Lilium oxypetalum )	Oxyphylla Begonia ( Begonia oxyphylla )
Oyama Magnolia ( Magnolia sieboldii )	Oyez Arilbred Bearded Iris ( Iris )
Oyster Bay ( Ilex opaca )	Ozakazuki Japanese Maple ( Acer palmatum )
Ozark Beauty Peony ( Paeonia lactiflora )	Ozark Compact Pfitzer Juniper ( Juniperus chinensis )
Ozark Gold Apple ( Malus domestica )	Ozark Phlox ( Phlox pilosa )
Ozark Premier ( Prunus salicina )	Ozark Queen Hardy Water Lily ( Nymphaea )
Ozark Spring Crapemyrtle ( Lagerstroemia indica )	Ozark Sundrops ( Oenothera macrocarpa )
Ozeki Camellia ( Camellia japonica )	Ozora Kurume Azalea ( Rhododendron )

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