Plant Growing Guides

Oak

Quercus species

Oak Leaf Lettuce

Lactuca sativa var. crispa

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'

Oakleaf Lettuce

Lactuca sativa var. crispa

Oakleaf Lettuce Green Oakleaf

Lactuca sativa var. crispa

Oak Sedge

Carex quercetorum

Oats and Barley

Avena sativa (Oats) / Hordeum vulgare (Barley)

Obedient Plant

Physostegia virginiana

Oblong Sundew

Drosera intermedia

Oca

Oxalis tuberosa

October Daphne

Sedum sieboldii

October Daphne Sedum

Sedum sieboldii 'October Daphne'

October Glory

Acer rubrum 'October Glory'

October Skies

Aster novi-belgii 'October Skies'

Odontoglossum Crispum Hybrid Orchid

Odontoglossum crispum × (hybrid parentage)

Odorata

Reseda odorata

Odorata White Water Lily

Nymphaea odorata var. alba

Sweet Osmanthus

Osmanthus fragrans var. odoratissima

Evening Primrose

Oenothera biennis

Ogon

Sedum japonicum 'Ogon'

Oilseed Radish

Raphanus sativus var. oleifer

Oka

Oxalis tuberosa

Okinawan Amaranth

Amaranthus tricolor

Okinawan Spinach

Alternanthera sissoo

Oklahoma Dwarf Pansy

Viola × wittrockiana 'Oklahoma Dwarf'

Old Fashioned Bleeding Heart

Dicentra spectabilis

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

Olive Ball Sedum

Sedum burrito var. burrito or Sedum 'Olive Ball'

Olney threesquare

Scirpus olneyi

Excavatum Orchid

Oncidium excavatum

O'Neal Rabbiteye Blueberry

Vaccinium ashei 'O'Neal'

Ong Choy

Ipomoea aquatica

Opal Basil

Ocimum basilicum 'Opal'

Japanese Mondo Grass

Ophiopogon japonicus