Plant Growing Guides

Oakington Blue Eyes

Veronica chamaedrys subsp. chamaedrys

Oakleaf Candytuft

Iberis sempervirens

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

Physalis pubescens

Oklahoma Dwarf Pansy

Viola × wittrockiana 'Oklahoma Dwarf'

Oklahoma Pink

Dianthus chinensis × barbatus

Old Green Gage

Prunus domestica subsp. italica

On Parade

Dahlia × hybrida 'On Parade'

Opening Night Petunia

Petunia × hybrida 'Opening Night'

Opium Poppy White Cloud

Papaver somniferum 'White Cloud'

Orange Bedder

Impatiens walleriana (hybrid cultivar)

Orange Bouquet

Asclepias tuberosa

Orange King

Calendula officinalis 'Orange King'

Orange Pixie

Solanum pseudocapsicum × Solanum lycopersicum

Orange Queen

Asclepias tuberosa

Orange Star

Ornithogalum dubium

Orange Sun

Heliopsis helianthoides var. scabra 'Orange Sun'

Orbit Rose

Rosa × hybrida 'Orbit'

Orchid Companion Plants

Various species (Orchidaceae family companions)

Oriental Hybrid Lily 'Casa Blanca'

Lilium 'Casa Blanca'

Oriental Lily

Lilium orientalis hybrids

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'

Star of Bethlehem

Ornithogalum umbellatum

Oso Sweet Strawberry

Fragaria × ananassa 'Oso Sweet'

Osteospermum

Osteospermum ecklonis

African Daisy (Osteospermum)

Osteospermum ecklonis

Osteospermum Akila

Osteospermum ecklonis 'Akila'

Osteospermum Lemon Zest

Osteospermum ecklonis 'Lemon Zest'

Osteospermum Sunny Lado

Osteospermum ecklonis 'Sunny Lado'

Osteospermum Voltage Purple

Osteospermum ecklonis 'Voltage Purple'

Ostrich Plume

Celosia plumosa