Plant Growing Guides

Oakleaf Candytuft

Iberis sempervirens

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'

Obedient Plant

Physostegia virginiana

Oblong Sundew

Drosera intermedia

Ochlockonee Blueberry

Vaccinium ashei

Ocotillo

Fouquieria splendens

October Daphne

Sedum sieboldii

October Daphne Sedum

Sedum sieboldii 'October Daphne'

October Skies

Aster novi-belgii 'October Skies'

Odontoglossum Crispum Hybrid Orchid

Odontoglossum crispum × (hybrid parentage)

Odorata

Reseda odorata

Odorata Nana Water Lily

Nymphaea odorata var. minor

Odorata Pink Water Lily

Nymphaea odorata var. rosea

Odorata Pygmaea Water Lily

Nymphaea odorata var. pygmaea

Odorata Red Water Lily

Nymphaea odorata var. rubra

Odorata Sulphurea Water Lily

Nymphaea odorata sulphurea

Odorata White Water Lily

Nymphaea odorata var. alba

Sweet Osmanthus

Osmanthus fragrans var. odoratissima

Evening Primrose

Oenothera biennis

Oenothera deltoides

Oenothera deltoides

Oklahoma Blaze

Rosa 'Oklahoma Blaze'

Oklahoma Dwarf Pansy

Viola × wittrockiana 'Oklahoma Dwarf'

Oklahoma Pink

Dianthus chinensis × barbatus

Oklahoma Rose

Rosa 'Oklahoma'

Oklahoma Scarlet

Rosa oklahoma

Old Blush

Rosa × odorata 'Pallida'

Old Fashioned Bleeding Heart

Dicentra spectabilis

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

Excavatum Orchid

Oncidium excavatum

Oncocyclus Iris

Iris oncocyclus

O'Neal Blueberry

Vaccinium corymbosum 'O'Neal'

O'Neal Rabbiteye Blueberry

Vaccinium ashei 'O'Neal'