Plant Growing Guides

Obedient Plant

Physostegia virginiana

Oblong Sundew

Drosera intermedia

October Skies

Aster novi-belgii 'October Skies'

Odontioda Bictoniense

Odontioda bictoniense

Odontoglossum Orchid

Odontoglossum spp.

Odorata Nana Water Lily

Nymphaea odorata var. minor

Oklahoma Scarlet

Rosa oklahoma

Oncidium Alliance Orchids

Oncidium alliance (genus Oncidium and related genera)

Oncidium Hybrid

Oncidium × hybridum

Opium Poppy Picotee

Papaver somniferum 'Picotee'

Optimara Freya

Saintpaulia ionantha 'Optimara Freya'

Orange Bottlebrush Ginger

Zingiber spectabile

Orange Hawkweed

Hieracium aurantiacum

Orange Impression

Tulipa × gesneriana 'Orange Impression'

Orchid Cactus

Selenicereus anthonyanus

Dendrobium Orchid

Dendrobium spp.

Oncidium Orchid

Oncidium spp.

Oriental Breeze

Chrysanthemum morifolium 'Oriental Breeze'

Oriental Hybrid Lily 'Mona Lisa'

Lilium 'Mona Lisa'

Oriental Hybrid Lily 'Muscadet'

Lilium 'Muscadet'

Oriental Hybrid Lily 'Siberia'

Lilium 'Siberia'

Oriental Hybrid Lily Sorbonne

Lilium 'Sorbonne'

Oriental Hybrid Lily Stargazer

Lilium 'Stargazer'

Oriental Hybrid Lily

Lilium orientalis hybrids

Orientalis Hybrid Lily 'House of All Hallows'

Lilium × orientalis 'House of All Hallows'

Orientalis Hybrid Lily

Lilium × orientalis

Oriental Lily Hybrid 'Sorbonne'

Lilium orientalis 'Sorbonne'

Oriental Lily 'Muscadet'

Lilium orientalis 'Muscadet'

Oriental Lily Siberia

Lilium 'Siberia'

Oriental Lily 'Sorbonne'

Lilium orientalis 'Sorbonne'

Oriental Lily Stargazer

Lilium 'Stargazer'

Oriental Nights

Lilium 'Oriental Nights'

Oriental Poppy 'Beauty of Livermere'

Papaver orientale 'Beauty of Livermere'

Oriental Splendour Lily

Lilium 'Oriental Splendour'

Ornamental Allium

Allium spp.

Ornamental Ginger

Alpinia, Hedychium, Curcuma, and related genera

Ornamental Onion

Allium spp.

Arabian Star of Bethlehem

Ornithogalum arabicum

Sun Star, Yellow Star of Bethlehem

Ornithogalum dubium 'Yellow'

Narbonne Star of Bethlehem

Ornithogalum narbonense

Drooping Star of Bethlehem

Ornithogalum nutans

Pyrenean Star-of-Bethlehem

Ornithogalum pyrenaicum

Chincherinchee

Ornithogalum thyrsoides

Oroya

Oroya peruviana

Other aquatic bladderworts

Utricularia species (aquatic)

Other Caladenia Species

Caladenia spp.

Calochortus

Calochortus species

Compact Orchids

Orchidaceae (various genera)