Plant Growing Guides

OAC Thunder Oat

Avena sativa

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'

Oat Grass

Avena sativa

Oat Groats Hulless

Avena sativa var. nuda

Hulless Oats Marion

Avena sativa var. nuda

Oat Groats Hulless Paul

Avena sativa

Oats

Avena sativa

Common Oats

Avena sativa

Oats (Nurse Crop)

Avena sativa

Oats (Nurse Crop) Marion

Avena sativa 'Marion'

Oats and Barley

Avena sativa (Oats) / Hordeum vulgare (Barley)

Winter Cereal Rye

Secale cereale

Oberkulmer Rotkorn

Triticum aestivum subsp. spelta

Oberkulmer Spelt

Triticum dicoccum

Obtuse Sedge

Carex obtusata

October Daphne Sedum

Sedum sieboldii 'October Daphne'

Oklahoma Blaze

Rosa 'Oklahoma Blaze'

Oklahoma Rose

Rosa 'Oklahoma'

Old Blush

Rosa × odorata 'Pallida'

Old Gold

Juniperus x media 'Old Gold'

Olga Mezitt

Rhododendron 'Olga Mezitt'

Olney threesquare

Scirpus olneyi

Japanese Mondo Grass

Ophiopogon japonicus

Opuntia (High Altitude Species)

Opuntia spp. (alpine/montane varieties)

Orange Queen Heather

Erica cinerea 'Orange Queen'

Orchard grass

Dactylis glomerata

Orchardgrass

Dactylis glomerata

Orchard Grass Barolex

Dactylis glomerata 'Barolex'

Orchardgrass 'Latar'

Dactylis glomerata 'Latar'

Orchard Grass 'Lato'

Dactylis glomerata 'Lato'

Oregon Evergreen

Rubus laciniatus

Oregon Grape

Mahonia aquifolium

Oregon Grape Holly

Mahonia aquifolium

Oriental Limelight Hydrangea

Hydrangea paniculata 'Summer Crush'

Orion Blueberry

Vaccinium corymbosum 'Orion'

Ornamental Evergreens

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

Ornamental Grasses

Poaceae (family)

Ornamental Grasses (Dry Climate Varieties)

Poaceae family (various species including Bouteloua, Festuca, Stipa, Muhlenbergia)

Ornamental Grass - Feather Reed Grass

Calamagrostis × acutiflora

Ornamental Grass - Carex (Sedge)

Carex species

Ornamental Grass - Fescue

Festuca species

Festuca (Hard Fescue)

Festuca ovina subsp. duriuscula

Ornamental Grass - Blue Fescue

Festuca glauca

Ornamental Grasses (Festuca and Carex)

Festuca spp. and Carex spp.