Plant Growing Guides

Oakleaf Hydrangea

Hydrangea quercifolia

Oakleaf Hydrangea 'Alice'

Hydrangea quercifolia 'Alice'

Oakleaf Hydrangea 'Munchkin'

Hydrangea quercifolia 'Munchkin'

Oakleaf Hydrangea Pee Wee

Hydrangea quercifolia 'Pee Wee'

Oakleaf Hydrangea Snowflake

Hydrangea quercifolia 'Snowflake'

Ochlockonee Blueberry

Vaccinium ashei

Ocotillo

Fouquieria splendens

October Daphne

Sedum sieboldii

October Daphne Sedum

Sedum sieboldii 'October Daphne'

Sweet Osmanthus

Osmanthus fragrans var. odoratissima

Oha wai

Clermontia arborescens

Old Blush

Rosa × odorata 'Pallida'

Old Gold

Juniperus x media 'Old Gold'

Old Man Cactus

Cephalocereus senilis

Oleander 'Sister Agnes'

Nerium oleander 'Sister Agnes'

Oleander Variegata

Nerium oleander 'Variegata'

Daisy Bush

Olearia

Holly-leaf Olearia

Olearia macrodonta

Olearia microdisca

Olearia microdisca

Daisy Bush

Olearia paniculata

Olearia stellulata

Olearia stellulata

Olga Mezitt

Rhododendron 'Olga Mezitt'

Olive Ball Sedum

Sedum burrito var. burrito or Sedum 'Olive Ball'

O'Neal Blueberry

Vaccinium corymbosum 'O'Neal'

O'Neal Rabbiteye Blueberry

Vaccinium ashei 'O'Neal'

Optica Cristata

Haworthia retusa var. obtusa 'Optica Cristata'

Optica Gibbosa

Mammillaria gibbosa var. optice

Opuntia Ellisiana

Opuntia ellisiana

Opuntia megacantha

Opuntia megacantha

Orange Hibiscus

Hibiscus rosa-sinensis

Orange Hibotan

Chamaecereus silvestrii var. orange

Orange Queen Heather

Erica cinerea 'Orange Queen'

Oregon Evergreen

Rubus laciniatus

Oregon Grape

Mahonia aquifolium

Oregon Grape Holly

Mahonia aquifolium

Oreocereus

Oreocereus (genus)

Old Man of the Andes

Oreocereus neowerdmannianus

Organ Pipe

Stenocereus thurberi

Oriental Limelight Hydrangea

Hydrangea paniculata 'Summer Crush'

Orion Blueberry

Vaccinium corymbosum 'Orion'

Ornamental Evergreens

Various species (e.g., Ilex, Taxus, Buxus, Chamaecyparis)

Ornamental Holly

Ilex spp.

Ornamental Juniper Gold Coast

Juniperus horizontalis 'Gold Coast'

Ornamental Juniper

Juniperus spp.

Ornamental Purple

Iresine herbstii

Ornamental Shrubs

Various species (Genus-dependent)

Chinese Dunce Cap, Orostachys

Orostachys boehmeri

Dunce Cap Cactus

Orostachys iwarenge