'Oso Easy® Cherry Pie' Rose 'Oso Easy® Honey Bun' Rose
'Oso Easy® Lemon Zest' Rose 'Oso Easy® Mango Salsa' Rose
'Oso Easy® Strawberry Crush' Rose 'Oso Easy™ Paprika' Rose
'Oso Easy™ Peachy Cream' Rose 'Oso Easy™ Fragrant Spreader' Rose
'Oso Happy® Candy Oh!' Rose 'Oso Happy® Petit Pink' Rose
'Oso Happy® Smoothie' Rose 'Ospring' Chinese Holly
'Ostbo Red' Mountain Laurel 'Oto hime' Japanese Maple
'Otome' Azalea 'Otome zakura' Japanese Maple
'Otto Luyken' Cherry Laurel 'Otto Quast' French Lavender
'Otto's Dissectum' Japanese Cutleaf Maple Outeniqua Pincushion
Oval Kumquat Oval-leaf Mintbush
Oval-leaved Viburnum 'Oxfordshire' Rose
Oyama Magnolia Ozark (spp.)
'Ozark Spring' Crapemyrtle: indica Ozark 'Autumn Embers'
Ozark 'Carnea' Ozark 'Purpurea'
Ozark 'Sandra' 'P.G. Pee Wee' Panicle Hydrangea
Pacific Mountain Ash Pacific Ninebark
Pacific Rhodendron 'Pacific Sunset' Flannel Bush
'Paeonyflora' Rose of Sharon Pagoda Dogwood 'W Stackman'
Pagoda Flower 'Borneo Sunset' Painkiller
'Painted Lady' Rhododendron: hybrid Painted Leaf (spp.)
Painted Leaf 'Peterstar Silver Bells' Painted Leaf 'V-14 Pink'
Painted Leaf 'V-17 Angelika White' Painted Leaf 'Winter Rose'
Pajaro Manzanita Pale Fan Flower
Pale Lidflower Pale Pea Bush
'Palibin' Dwarf Lilac 'Pallida' Chinese Witchhazel
Palm Lily 'Red Star' Palm Lily: gloriosa (spp.)
Palm Lily: gloriosa Variegated Palm, False 'Red Star'
Palm, Fern Palm, Grass 'Red Star'
Palm, Japanese Sago Palm, King Sago
Palm, New Zealand Cabbage 'Red Star' Palm, Queen Sago
Palm, Sago Palm: revoluta, Sago
Palmer's Indian Mallow 'Palmetto Sunrise' Rose
Palo Colorado Palo Verde, Mexican
Panama, Orange 'Tiger' Panicle Hydrangea (spp.)
Panicle Hydrangea 'Barbara' Panicle Hydrangea 'Bobo®'
Panicle Hydrangea 'Burgundy Lace' Panicle Hydrangea 'Fire Light®'
Panicle Hydrangea 'Grandiflora' Panicle Hydrangea 'Green Spire'
Panicle Hydrangea 'Kyushu' Panicle Hydrangea 'Limelight'
Panicle Hydrangea 'Little Lime®' Panicle Hydrangea 'P.G. Pee Wee'
Panicle Hydrangea 'Pee Wee' Panicle Hydrangea 'Praecox'
Panicle Hydrangea 'Quick Fire®' Panicle Hydrangea 'Saw Tooth'
Panicle Hydrangea 'Tardiva' Panicle Hydrangea 'The Swan'
Panicle Hydrangea 'Unique' Panicle Hydrangea 'White Lace'
Panicle Hydrangea 'White Moth'