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'

Oaxacan Blue

Salvia hispanica var. oaxacana

Ochlockonee Blueberry

Vaccinium ashei

Ocotillo

Fouquieria splendens

October Daphne

Sedum sieboldii

October Daphne Sedum

Sedum sieboldii 'October Daphne'

Oculatus Basil

Ocimum basilicum 'Oculatus'

Sweet Osmanthus

Osmanthus fragrans var. odoratissima

Common Basil

Ocimum basilicum

Oklahoma Blaze

Rosa 'Oklahoma Blaze'

Oklahoma Rose

Rosa 'Oklahoma'

Old Blush

Rosa × odorata 'Pallida'

Old Gold

Juniperus x media 'Old Gold'

Oleander

Nerium oleander

Oleander 'Pink Petite'

Nerium oleander 'Pink Petite'

Oleander 'Sister Agnes'

Nerium oleander 'Sister Agnes'

Oleander Variegata

Nerium oleander 'Variegata'

Daisy Bush

Olearia

Tree Daisy

Olearia arborescens

Henry Travers Daisy Bush

Olearia × haastii 'Henry Travers'

Holly-leaf Olearia

Olearia macrodonta

Olearia microdisca

Olearia microdisca

Daisy Bush

Olearia paniculata

Dusty Daisy Bush

Olearia phlogopappa

Olearia stellulata

Olearia stellulata

O'Neal Blueberry

Vaccinium corymbosum 'O'Neal'

O'Neal Rabbiteye Blueberry

Vaccinium ashei 'O'Neal'

Opal Basil

Ocimum basilicum var. purpurascens

Opal Basil

Ocimum basilicum 'Opal'

Optica Rubra

Ocimum basilicum var. purpurascens 'Optica Rubra'

Optima Basil

Ocimum basilicum 'Optima'

Opuntia

Opuntia ficus-indica

Opuntia Ellisiana

Opuntia ellisiana

Indian Fig Prickly Pear

Opuntia ficus-indica

Opuntia (High Altitude Species)

Opuntia spp. (alpine/montane varieties)

Opuntia megacantha

Opuntia megacantha

Orange Flowering Maple

Abutilon aurantiacum

Orange Hibiscus

Hibiscus rosa-sinensis

Orange Ixora

Ixora coccinea

Orange Mint

Mentha × piperita var. citrata

Orange Queen Heather

Erica cinerea 'Orange Queen'

Orange Zest

Ocimum basilicum 'Orange Zest'

Oregano

Origanum vulgare

Oregano and Marjoram

Origanum vulgare (oregano) and Origanum majorana (marjoram)