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'

Oasis Melon

Cucumis melo var. reticulatus

Ochlockonee Blueberry

Vaccinium ashei

October Daphne Sedum

Sedum sieboldii 'October Daphne'

Sweet Osmanthus

Osmanthus fragrans var. odoratissima

Oklahoma

Physalis pubescens

Oklahoma Blaze

Rosa 'Oklahoma Blaze'

Oklahoma Rose

Rosa 'Oklahoma'

Old Blush

Rosa × odorata 'Pallida'

Old Gold

Juniperus x media 'Old Gold'

Old Green Gage

Prunus domestica subsp. italica

Oleander

Nerium oleander

Oleander 'Pink Petite'

Nerium oleander 'Pink Petite'

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

Olga Mezitt

Rhododendron 'Olga Mezitt'

Olallieberry

Rubus × loganbaccus var. ollaliensis

Olympia Strawberry

Fragaria × ananassa 'Olympia'

O'Neal Blueberry

Vaccinium corymbosum 'O'Neal'

O'Neal Rabbiteye Blueberry

Vaccinium ashei 'O'Neal'

Onslow Blueberry

Vaccinium corymbosum 'Onslow'

Opuntia (High Altitude Species)

Opuntia spp. (alpine/montane varieties)

Orange Honeydew

Cucumis melo var. inodorus

Orange Pixie

Solanum pseudocapsicum × Solanum lycopersicum

Orange Queen Heather

Erica cinerea 'Orange Queen'

Orange Quince

Cydonia oblonga 'Orange'

Oregon Evergreen

Rubus laciniatus

Oregon Grape

Mahonia aquifolium

Oregon Grape Holly

Mahonia aquifolium

Orient Pear

Pyrus pyrifolia 'Orient'

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 Blue Star

Juniperus squamata 'Blue Star'

Ornamental Juniper Gold Coast

Juniperus horizontalis 'Gold Coast'

Ornamental Juniper

Juniperus spp.