Plant Growing Guides

Oakington Blue Eyes

Veronica chamaedrys subsp. chamaedrys

Oakleaf Candytuft

Iberis sempervirens

Oba

Hyptis suaveolens

Oculatus Basil

Ocimum basilicum 'Oculatus'

Odorata Pink Water Lily

Nymphaea odorata var. rosea

Odorata Sulphurea Water Lily

Nymphaea odorata sulphurea

Odorata White Water Lily

Nymphaea odorata var. alba

Evening Primrose

Oenothera biennis

Oenothera deltoides

Oenothera deltoides

Oklahoma Dwarf Pansy

Viola × wittrockiana 'Oklahoma Dwarf'

Oklahoma Pink

Dianthus chinensis × barbatus

On Parade

Dahlia × hybrida 'On Parade'

Opal Basil

Ocimum basilicum var. purpurascens

Opal Basil

Ocimum basilicum 'Opal'

Opening Night Petunia

Petunia × hybrida 'Opening Night'

Opium Poppy White Cloud

Papaver somniferum 'White Cloud'

Optica Rubra

Ocimum basilicum var. purpurascens 'Optica Rubra'

Optima Basil

Ocimum basilicum 'Optima'

Orange Bedder

Impatiens walleriana (hybrid cultivar)

Orange Bouquet

Asclepias tuberosa

Orange King

Calendula officinalis 'Orange King'

Orange Queen

Asclepias tuberosa

Orange Star

Ornithogalum dubium

Orange Sun

Heliopsis helianthoides var. scabra 'Orange Sun'

Orange Zest

Ocimum basilicum 'Orange Zest'

Orbit Rose

Rosa × hybrida 'Orbit'

Orchid Companion Plants

Various species (Orchidaceae family companions)

Oregano

Origanum vulgare

Oregano and Marjoram

Origanum vulgare (oregano) and Origanum majorana (marjoram)

Oregano and Marjoram

Origanum vulgare (Oregano) and Origanum majorana (Marjoram)

Oregano Sedum

Sedum oreganum

Oriental Hybrid Lily 'Casa Blanca'

Lilium 'Casa Blanca'

Oriental Lily

Lilium orientalis hybrids

Ornamental Basil

Ocimum basilicum var. ornamentale

Ornamental Cabbage

Brassica oleracea var. acephala

Ornamental Cabbage Coral Queen

Brassica oleracea var. acephala

Ornamental Cabbage Dynasty Pink

Brassica oleracea var. acephala

Ornamental Cabbage Nagoya Red

Brassica oleracea var. acephala

Ornamental Cabbage 'Pigeon Purple'

Brassica oleracea var. acephala

Ornamental Foliage Plants

Various genera and species

Ornamental Plants (General Category)

Various species

Ornamental Sage

Salvia nemorosa (Meadow Sage) and related ornamental Salvia species

Ornamental Salvia

Salvia spp.

Ornamental Sunflower

Helianthus annuus

Ornamental Verbena

Verbena × hybrida

Star of Bethlehem

Ornithogalum umbellatum

Star of Bethlehem

Ornithogalum dubium

Star of Bethlehem 'White'

Ornithogalum dubium 'White'