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Old World Orchid

Bulbophyllum appendiculatum
Orchid flower detail Orchid flower detail Leaves are on the left side of photo Leaves are on the left side of photo Form with roots from the Naturalis Biodiversity Center Form with roots from the Naturalis Biodiversity Center Form with roots from the Royal Botanical Gardens, Kew, UK Form with roots from the Royal Botanical Gardens, Kew, UK

Oleander

Nerium oleander
'Hardy Pink' Flowers - Sept. 15 - Wake Co., NC 'Hardy Pink' Flowers - Sept. 15 - Wake Co., NC Pink flowers with corona around the mouth of the floral tube Pink flowers with corona around the mouth of the floral tube Nerium oleander Nerium oleander Nerium oleander Leaf and Flower Nerium oleander Leaf and Flower Flower Form Flower Form Nerium oleander Form Nerium oleander Form
2 Cultivars/Varieties

Oleaster

Elaeagnus x ebbingei
Flowers Flowers Leaf closeup Leaf closeup Leaves and fruit Leaves and fruit Leaf of 'Gilt Edge' Leaf of 'Gilt Edge' Elaeagnus x ebbingei Elaeagnus x ebbingei Elaeagnus x ebbingei Elaeagnus x ebbingei
2 Cultivars/Varieties

Olive

Olea europaea
Olea europaea Olea europaea Trunk of a mature tree Trunk of a mature tree Mature fruit Mature fruit Flowers Flowers Olea europaea Olea europaea Leaf closeup Leaf closeup
5 Cultivars/Varieties

Omacha Variegated Hydrangea

Hydrangea serrata 'Omacha Variegata'
Hydrangea Serrata 'Omacha Variegated' Hydrangea Serrata 'Omacha Variegated' In bloom In bloom Bloom Bloom Lace Cap Pink Hydrangea - Flowers & Leaves Lace Cap Pink Hydrangea - Flowers & Leaves

Omacha Variegated Serrated Leaf Hydrangea

Hydrangea serrata 'Omacha Variegata'
Hydrangea Serrata 'Omacha Variegated' Hydrangea Serrata 'Omacha Variegated' In bloom In bloom Bloom Bloom Lace Cap Pink Hydrangea - Flowers & Leaves Lace Cap Pink Hydrangea - Flowers & Leaves

Oncidium Orchid

Oncidium
7 Cultivars/Varieties

One-flowered Hawthorn

Crataegus uniflora
Plant Plant Flower and leaves Flower and leaves Fruit Fruit

Oneflower Hawthorn

Crataegus uniflora
Plant Plant Flower and leaves Flower and leaves Fruit Fruit

Oneida Viburnum

Viburnum dilatatum 'Oneida'
Form in bloom Form in bloom

Oneseed Juniper

Juniperus monosperma
Juniperus monosperma Juniperus monosperma

One-seed Juniper

Juniperus monosperma
Juniperus monosperma Juniperus monosperma

Onion

Allium
Alllium Alllium Yellow flowers of A. flavum and purple flowers of A. carinatum Yellow flowers of A. flavum and purple flowers of A. carinatum Allium Allium Allium Plant Allium Plant Allium Allium Allium Allium
16 Cultivars/Varieties

Onion

Allium cepa
shallots shallots Red shallots Red shallots Allium cepa Allium cepa Allium cepa habit with inflorescence Allium cepa habit with inflorescence Allium cepa inflorescence Allium cepa inflorescence Allium cepa Allium cepa

Onion Grass

Allium vineale
Purplish flowers (Guilford County, NC)-Late Spring Purplish flowers (Guilford County, NC)-Late Spring Bulbils (Guilford County, NC)-Late Spring Bulbils (Guilford County, NC)-Late Spring Inflorescence (Guilford County, NC)-Late Spring Inflorescence (Guilford County, NC)-Late Spring Bulbils (Guilford County, NC)-Late Spring Bulbils (Guilford County, NC)-Late Spring Bulbils (Guilford County, NC)-Late Spring Bulbils (Guilford County, NC)-Late Spring Allium vineale Allium vineale

Onions

Allium cepa
shallots shallots Red shallots Red shallots Allium cepa Allium cepa Allium cepa habit with inflorescence Allium cepa habit with inflorescence Allium cepa inflorescence Allium cepa inflorescence Allium cepa Allium cepa

Ookow

Dichelostemma congestum
Form in June in Lyle, Washington Form in June in Lyle, Washington Flower buds in June in Ashland, Oregon Flower buds in June in Ashland, Oregon Flowers in May in Marin County, California Flowers in May in Marin County, California Seedpods in August in Rickreall, Oregon Seedpods in August in Rickreall, Oregon

Orange

Citrus x sinensis
Blossom - March - NC Blossom - March - NC Early Fruit - March - NC Early Fruit - March - NC Thorns - March - NC Thorns - March - NC

Orange Ball Buddleia

Buddleja globosa
Buddleja globosa Buddleja globosa Buddleja globosa flower Buddleja globosa flower leaves, bark, and flowers leaves, bark, and flowers flowers with bees flowers with bees This shrub takes on a sprawling form. This shrub takes on a sprawling form. leaves, stems and flower leaves, stems and flower
4 Cultivars/Varieties

Orange Ball Tree

Buddleja globosa
Buddleja globosa Buddleja globosa Buddleja globosa flower Buddleja globosa flower leaves, bark, and flowers leaves, bark, and flowers flowers with bees flowers with bees This shrub takes on a sprawling form. This shrub takes on a sprawling form. leaves, stems and flower leaves, stems and flower
4 Cultivars/Varieties

Orangebark Stewartia

Stewartia monadelpha
Stewartia monadelpha Stewartia monadelpha Stewartia monadelpha Stewartia monadelpha Stewartia monadelpha Stewartia monadelpha
1 Cultivar/Variety

Orange Bell Lily

Lilium grayi
Native habitat Native habitat Form Form Flowers Flowers Flowers Flowers Leaf arrangment Leaf arrangment Native habitat Native habitat

Orange Bells

Tecoma fulva subsp. guarume
Tecoma alata Tecoma alata Form Form Cluster of orange tubular flowers. Cluster of orange tubular flowers.
1 Cultivar/Variety

Orange Butterfly Bush

Buddleja globosa
Buddleja globosa Buddleja globosa Buddleja globosa flower Buddleja globosa flower leaves, bark, and flowers leaves, bark, and flowers flowers with bees flowers with bees This shrub takes on a sprawling form. This shrub takes on a sprawling form. leaves, stems and flower leaves, stems and flower
4 Cultivars/Varieties

Orange Candle Flower

Arum italicum
Plant Plant Leaf Leaf Plants Plants Spathe Spathe Spathe Spathe Fruits Fruits
3 Cultivars/Varieties

Orange Cestrum

Cestrum aurantiacum
Flower and leaf Flower and leaf Cestrum aurantiacum Cestrum aurantiacum Cestrum aurantiacum Cestrum aurantiacum Cestrum aurantiacum Cestrum aurantiacum Impatiens pallida Impatiens pallida Impatiens pallida Impatiens pallida
3 Cultivars/Varieties

Orange Coneflower

Rudbeckia fulgida
Rudbeckia fulgida Rudbeckia fulgida Rudbeckia fulgida Rudbeckia fulgida Rudbeckia fulgida Rudbeckia fulgida Rudbeckia fulgida var. sullivantii 'Goldsturm' Rudbeckia fulgida var. sullivantii 'Goldsturm' Rudbeckia fulgida Rudbeckia fulgida flower and leaves (summer in Moore county) flower and leaves (summer in Moore county)
5 Cultivars/Varieties

Orange Cosmos

Cosmos sulphureus
Cosmos sulphureus Cosmos sulphureus Cosmos sulphureus Cosmos sulphureus Cosmos sulphureus Cosmos sulphureus Cosmos sulphureus Cosmos sulphureus Cosmos sulphureus Cosmos sulphureus Cosmos sulphureus Cosmos sulphureus
4 Cultivars/Varieties

Orange Daylily

Hemerocallis fulva
Hemerocalis fulva Hemerocalis fulva Hemerocalis fulva Hemerocalis fulva Hemerocalis fulva Hemerocalis fulva Hemerocalis fulva Hemerocalis fulva Flower Flower

Orange Esperanza

Tecoma fulva subsp. guarume
Tecoma alata Tecoma alata Form Form Cluster of orange tubular flowers. Cluster of orange tubular flowers.
1 Cultivar/Variety

Orange-Eyed Butterfly Bush

Buddleja davidii
Buddleia davidii Buddleia davidii Buddleia davidii Buddleia davidii Buddleia davidii 'Nanho Purple' Buddleia davidii 'Nanho Purple' Buddleia davidii Whole plant form Buddleia davidii Whole plant form Swallowtail sipping nectar. Swallowtail sipping nectar. Buddleja davidi Buddleja davidi
5 Cultivars/Varieties

Orange Eyed Butterfly Bush

Buddleja davidii 'Attraction'

Orange Flame

Berberis aquifolium 'Orange Flame'
leaves and form leaves and form flower and leaves flower and leaves

'Orange Flame' Grape Holly

Berberis aquifolium 'Orange Flame'
leaves and form leaves and form flower and leaves flower and leaves

Orange-flowered Anise Hyssop

Agastache coccinea
Flowers Flowers Flowers Flowers Leaf detail Leaf detail Stem and leaves Stem and leaves

Orange Fringed Orchid

Platanthera ciliaris
Flower - Closeup - Late summer - Croatan National Forest - NC Flower - Closeup - Late summer - Croatan National Forest - NC Form - Late summer - Croatan National Forest - NC Form - Late summer - Croatan National Forest - NC Flower - Late summer - Croatan National Forest - NC Flower - Late summer - Croatan National Forest - NC View of the inflorecence from the top. Frederick Co., Maryland View of the inflorecence from the top. Frederick Co., Maryland Flowers bloom from the bottom of the inflorescence to the top. Flowers bloom from the bottom of the inflorescence to the top. Simple leaves clasp the stem. Simple leaves clasp the stem.

Orange Glow™

Rosa Knock Out® Group
Coral 'Radral' Flower Coral 'Radral' Flower Coral 'Radral' Flower and bud Coral 'Radral' Flower and bud Yellow Knockou rose Yellow Knockou rose Flowers of Red Knockout Flowers of Red Knockout Form Form Double red flowers and form Double red flowers and form
13 Cultivars/Varieties

Orange Honey

Rosa 'Orange Honey'
Small orange-yellow roses Small orange-yellow roses

Orange Hummingbird Mint

Agastache 'Acapulco Orange'
Form Form Flowers Flowers Plant in bloom Plant in bloom Leaves Leaves Flowers Flowers

Orange Jessamine

Cestrum aurantiacum
Flower and leaf Flower and leaf Cestrum aurantiacum Cestrum aurantiacum Cestrum aurantiacum Cestrum aurantiacum Cestrum aurantiacum Cestrum aurantiacum Impatiens pallida Impatiens pallida Impatiens pallida Impatiens pallida
3 Cultivars/Varieties

Orange Jewelweed

Impatiens capensis
Form Form Close up of flower Close up of flower Flowers in Cabarrus Co, NC Flowers in Cabarrus Co, NC In the landscape Cabarrus Co, NC In the landscape Cabarrus Co, NC flower, Great Smoky Mts National Park flower, Great Smoky Mts National Park Leaves Leaves

Orange Milkwort

Senega lutea
low-growing plants with vivid orange cone-like inflorescences. low-growing plants with vivid orange cone-like inflorescences. Inflorescence of bright orange flowers. Inflorescence of bright orange flowers. Inflorescence of bright orange flowers. Inflorescence of bright orange flowers. Polygala lutea Polygala lutea

Orange Peel

Cestrum
Form Form Flowers and leaves Flowers and leaves Flowers Flowers Fruit Fruit Fruit Fruit Branch Branch

Orange-peel Clematis

Clematis tangutica
Clematis tangutica Clematis tangutica leaves and flowers leaves and flowers leaves and flowers leaves and flowers leaves and flowers leaves and flowers flowers flowers flowers flowers
1 Cultivar/Variety

Orange Plume

Platanthera ciliaris
Flower - Closeup - Late summer - Croatan National Forest - NC Flower - Closeup - Late summer - Croatan National Forest - NC Form - Late summer - Croatan National Forest - NC Form - Late summer - Croatan National Forest - NC Flower - Late summer - Croatan National Forest - NC Flower - Late summer - Croatan National Forest - NC View of the inflorecence from the top. Frederick Co., Maryland View of the inflorecence from the top. Frederick Co., Maryland Flowers bloom from the bottom of the inflorescence to the top. Flowers bloom from the bottom of the inflorescence to the top. Simple leaves clasp the stem. Simple leaves clasp the stem.

Orange Star

Guzmania lingulata
Flowers Flowers Form Form Attached to wood Attached to wood Guzmania lingulata Guzmania lingulata Guzmania lingulata Guzmania lingulata Guzmania lingulata Guzmania lingulata
1 Cultivar/Variety

Orange Star

Tecoma fulva subsp. guarume
Tecoma alata Tecoma alata Form Form Cluster of orange tubular flowers. Cluster of orange tubular flowers.
1 Cultivar/Variety

Orange Stonecrop

Phedimus kamtschaticus
Flowers and Leaves Flowers and Leaves Flowers Flowers Sedum kamtschaticum Sedum kamtschaticum Leaves Leaves yellow star-shaped flowers. yellow star-shaped flowers. Sedum kamtschaticum Sedum kamtschaticum
2 Cultivars/Varieties