Plant Growing Guides

Oak

Quercus species

Oakington Blue Eyes

Veronica chamaedrys subsp. chamaedrys

Oak Leaf Lettuce

Lactuca sativa var. crispa

Oakleaf Candytuft

Iberis sempervirens

Oakleaf Lettuce

Lactuca sativa var. crispa

Oakleaf Lettuce Green Oakleaf

Lactuca sativa var. crispa

Oak Park Blue Phlox

Phlox divaricata subsp. laphamii 'Oak Park Blue'

Oat Groats Hulless Paul

Avena sativa

Oats (Nurse Crop)

Avena sativa

Oats (Nurse Crop) Marion

Avena sativa 'Marion'

Oats and Barley

Avena sativa (Oats) / Hordeum vulgare (Barley)

Obedient Plant

Physostegia virginiana

Oblong-leaved Sundew

Drosera intermedia

Oblong Sundew

Drosera intermedia

Obtuse Sedge

Carex obtusata

October Glory

Acer rubrum 'October Glory'

October Skies

Aster novi-belgii 'October Skies'

Odorata

Reseda odorata

Odorata White Water Lily

Nymphaea odorata var. alba

Evening Primrose

Oenothera biennis

Ogon

Sedum japonicum 'Ogon'

Oilseed Radish

Raphanus sativus var. oleifer

Oklahoma Dwarf Pansy

Viola × wittrockiana 'Oklahoma Dwarf'

Olga Mezitt

Rhododendron 'Olga Mezitt'

Olney threesquare

Scirpus olneyi

Opal Basil

Ocimum basilicum 'Opal'

Orach

Atriplex hortensis

Orach Magenta Magic

Atriplex hortensis 'Magenta Magic'

Orange Calendula

Calendula officinalis

Orange King

Calendula officinalis 'Orange King'

Orange Mint

Mentha × piperita var. citrata

Orchard grass

Dactylis glomerata

Orchardgrass

Dactylis glomerata

Orchard Grass Barolex

Dactylis glomerata 'Barolex'

Orchardgrass 'Latar'

Dactylis glomerata 'Latar'

Orchard Grass 'Lato'

Dactylis glomerata 'Lato'

Orchard Understory Trees

Various species (e.g., Malus, Prunus, Pyrus spp.)

Oregano

Origanum vulgare

Oriental Hybrid Lily 'Mona Lisa'

Lilium 'Mona Lisa'

Oriental Hybrid Lily Sorbonne

Lilium 'Sorbonne'

Oriental Limelight Hydrangea

Hydrangea paniculata 'Summer Crush'

Orion Blueberry

Vaccinium corymbosum 'Orion'

Ornamental Bok Choy

Brassica rapa subsp. chinensis

Ornamental Flowering Perennials

Multiple genera and species

Ornamental Flowering Plants

Various species (Angiosperms with decorative flowers)

Ornamental Foliage Plants

Various genera and species

Ornamental Grasses (Dry Climate Varieties)

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

Ornamental Grass - Carex (Sedge)

Carex species