Plant Growing Guides

OAC Thunder Oat

Avena sativa

Oakington Blue Eyes

Veronica chamaedrys subsp. chamaedrys

Oakleaf Candytuft

Iberis sempervirens

Oak Park Blue Phlox

Phlox divaricata subsp. laphamii 'Oak Park Blue'

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

Obedient Plant

Physostegia virginiana

Oberkulmer Rotkorn

Triticum aestivum subsp. spelta

Oberkulmer Spelt

Triticum dicoccum

Oblong-leaved Sundew

Drosera intermedia

Oblong Sundew

Drosera intermedia

Obtuse Sedge

Carex obtusata

October Skies

Aster novi-belgii 'October Skies'

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

Evening Primrose

Oenothera biennis

Oklahoma Dwarf Pansy

Viola × wittrockiana 'Oklahoma Dwarf'

Oklahoma Pink

Dianthus chinensis × barbatus

Oklahoma Scarlet

Rosa oklahoma

Old Fashioned Bleeding Heart

Dicentra spectabilis

Olney threesquare

Scirpus olneyi

Oncocyclus Iris

Iris oncocyclus

On Parade

Dahlia × hybrida 'On Parade'

Opening Night Petunia

Petunia × hybrida 'Opening Night'

Japanese Mondo Grass

Ophiopogon japonicus

Alpine Bee Orchid

Ophrys alpina

Opium Poppy Picotee

Papaver somniferum 'Picotee'

Opium Poppy White Cloud

Papaver somniferum 'White Cloud'

Orange Beauty

Calibrachoa × hybrida 'Orange Beauty'

Orange Bouquet

Asclepias tuberosa

Orange Calendula

Calendula officinalis

Orange Glow

Asclepias tuberosa

Orange Hawkweed

Hieracium aurantiacum

Orange Impression

Tulipa × gesneriana 'Orange Impression'

Orange King

Calendula officinalis 'Orange King'