Plant Growing Guides

Oak

Quercus species

Oakleaf Hydrangea 'Munchkin'

Hydrangea quercifolia 'Munchkin'

Oakleaf Hydrangea Pee Wee

Hydrangea quercifolia 'Pee Wee'

Oakleaf Lettuce

Lactuca sativa var. crispa

Oak Park Blue Phlox

Phlox divaricata subsp. laphamii 'Oak Park Blue'

Oblong-leaved Sundew

Drosera intermedia

October Daphne

Sedum sieboldii

October Daphne Sedum

Sedum sieboldii 'October Daphne'

Odontioda Cracens

Odontioda Cracens

Odontoglossum Crispum Hybrid Orchid

Odontoglossum crispum × (hybrid parentage)

Odontoglossum × Wilsonara

Odontoglossum × Wilsonara

Odorata

Reseda odorata

Sweet Osmanthus

Osmanthus fragrans var. odoratissima

Oha wai

Clermontia arborescens

Ohia

Metrosideros polymorpha

Ohia Lehua

Metrosideros polymorpha

Ohia Palai

Metrosideros polymorpha

Ohi'a Wai

Syzygium sandwicense

Okinawan Amaranth

Amaranthus tricolor

Okinawan Spinach

Alternanthera sissoo

Oleander 'Sister Agnes'

Nerium oleander 'Sister Agnes'

Oleander Variegata

Nerium oleander 'Variegata'

Daisy Bush

Olearia

Holly-leaf Olearia

Olearia macrodonta

Olearia microdisca

Olearia microdisca

Daisy Bush

Olearia paniculata

Olearia stellulata

Olearia stellulata

Olga Mezitt

Rhododendron 'Olga Mezitt'

Olive Ball Sedum

Sedum burrito var. burrito or Sedum 'Olive Ball'

Excavatum Orchid

Oncidium excavatum

Oncidium 'Goldrush Sunset'

Oncidium × 'Goldrush Sunset'

O'Neal Rabbiteye Blueberry

Vaccinium ashei 'O'Neal'

Ong Choy

Ipomoea aquatica

Alpine Bee Orchid

Ophrys alpina

Oppenheimiana Cactus

Rebutia oppenheimiana

Orach

Atriplex hortensis

Orach Magenta Magic

Atriplex hortensis 'Magenta Magic'

Orange Calendula

Calendula officinalis

Orange Dream Japanese Maple

Acer palmatum 'Orange Dream'

Orange Mint

Mentha × piperita var. citrata

Orchard grass

Dactylis glomerata

Orchard Understory Trees

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

Orchid companion ferns

Polypodium species, Platycerium species, and related fern genera

Hawaiian Forest Orchid

Dendrobium orchids (native Hawaiian species)

Orchid Tree

Bauhinia variegata

Oregon Ash

Fraxinus latifolia

Oregon Grape

Mahonia aquifolium

Oregon Grape Holly

Mahonia aquifolium