Flowers come in all shapes, sizes, and colors, and their names are just as diverse. One such example is flowers name starting with o. One such flower is the Osteospermum, also known as the African Daisy. This flower comes in a variety of colors and is popular for its ability to attract bees and butterflies.
Another “O” flower is the Oxalis known as the Shamrock plant. This flower has unique triangular leaves and produces delicate pink or white blooms. The Oncidium orchid is another notable “O” flower, with its exotic, showy blooms that resemble tiny dancing ballerinas. The Oriental Poppy is also a popular “O” flower, with vibrant red, pink, and orange petals that make a bold statement in any garden.
Overall, flowers starting with the letter “O” brings a touch of beauty and uniqueness to any floral arrangement or garden.
Flowers Name Starting with O
Ox-Eye Sunflower
The ox-eye sunflower is a beautiful plant. That is native to North America. It can grow up to 5 feet tall and 2–3 feet broad, making it a showpiece in any garden or landscape with its bright yellow flowers and dark center.
The ox-eye sunflower is a low-maintenance plant that grows well in full sun and well-drained soil, making it a good choice for new gardeners. It blooms from midsummer to early autumn, attracting a wide range of pollinators such as bees and butterflies. The ox-eye sunflower adds a splash of color to any garden while also attracting beneficial insects.
| Scientific Name | Heliopsis helianthoides |
| Native Range | Eastern and central North America from Saskatchewan east to Newfoundland and south as far as Texas, New Mexico, and Georgia |
| Flowering Season | Early to mid-summer |
Ox Eye
Ox eye, also known as Heliopsis helianthoides var. scabra, is a stunning and easy-to-grow plant that is native to North America. This vibrant plant produces beautiful yellow daisy-like flowers that can reach up to four inches across.
This plant is a popular choice for gardeners because it is low maintenance and can thrive in a variety of growing conditions. Oxeye is drought tolerant and can grow in both full sun and partial shade. It can also grow up to six feet tall and provides a striking backdrop to any garden. In addition to being a beautiful ornamental plant, Ox eye also attracts pollinators such as bees and butterflies to your garden.
| Scientific Name | Leucanthemum vulgare |
| Native Range | Eastern and central North America from Saskatchewan east to Newfoundland and south as far as Texas, New Mexico, and Georgia |
| Flowering Season | Summer |
Oregon Grape
The obovate peony, or Paeonia obovata, is a beautiful flowering plant in the Paeoniaceae family. This species is indigenous to Siberia, Mongolia, Japan, and Korea. The obovate peony has huge, bowl-shaped flowers that are usually purple-red with yellow centers.
The plant’s foliage is dark green and strongly lobed. The obovate peony is a robust plant that can endure chilly conditions, making it a popular choice for cooler-weather gardening. It is also a low-maintenance plant that takes little care, making it an excellent choice for any garden. In late spring to early summer, the obovate peony blooms, giving vivid color and a lovely smell to any setting.
| Scientific Name | Mahonia aquifolium |
| Native Range | Siberia, Mongolia, Japan, and Korea |
| Flowering Season | Summer |
Orange Stonecrop
Orange stonecrop is a beautiful and unique plant. That is native to Siberia, China, and Japan. Its foliage is a vibrant green color that turns into a rich, orange-red hue as it starts to bloom in the summer months.
Its flowers are small and bright yellow in color, making orange stonecrop a popular choice for gardeners who want to add a pop of color to their landscape. It is also a great choice for those who are looking for a low-maintenance plant, as it is drought-tolerant and requires minimal care.
| Scientific Name | Sedum kamtschaticum |
| Native Range | Siberia, China, and Japan |
| Flowering Season | Summer |
Orange Daylily
Orange daylily is a popular perennial flower that is native to Asia but is now found throughout North America as well. This plant is low maintenance and easy to grow in a variety of climates and soils.
Its characteristic orange flowers bloom in the summer and are known for their bright color and sweet fragrance. The leaves of the plant are long and grass-like, adding a lush texture to garden beds and borders. Orange daylilies are also known for their edible flowers, which can be used as a colorful addition to salads and other dishes.
| Scientific Name | Hemerocallis fulva |
| Native Range | Asia |
| Flowering Season | Summer |
Oleander Plant
The Oleander plant, also known by its scientific name Nerium Oleander, is a beautiful and popular flowering plant that is often used for landscaping purposes. Its vibrant colors and unique shape make it a standout addition to any garden or outdoor space.
The Oleander plant has been used for medicinal purposes in some cultures for centuries, as it contains compounds that have been found to have potential anti-cancer and anti-inflammatory properties. Overall, the Oleander plant is a unique and fascinating plant that should be appreciated for its beauty while also being respected for its potential dangers.
| Scientific Name | Nerium oleander |
| Native Range | Portugal, Spain, Italy, Greece, and Turkey |
| Flowering Season | Spring |
Old Lady Cactus
The Old Lady Cactus, scientifically known as Mammillaria Hahniana, is a common cactus variety. It gets its name from the abundant white hairs that cover the entire cactus, giving it a woolly appearance similar to that of an elderly woman’s hair.
This cactus is endemic to Mexico and is distinguished by its beautiful pink flowers that bloom in the spring and summer. The Old Lady Cactus is a slow-growing plant that can grow up to 6 inches tall and 3 inches across. It is a low-maintenance plant that can withstand drought and thrive in hot, dry environments.
| Scientific Name | Mammillaria hahniana |
| Native Range | Central and Northeastern Mexico |
| Flowering Season | Spring or early summer |
Ohio Spiderwort
Ohio Spiderwort is a beautiful flower. It is native to the central and eastern United States. This annual plant grows up to 3 feet tall and displays striking, deep blue-violet flowers with a yellow stamen that bloom from May to July. Fine hairs cover the leaves and stem, giving them a silky, delicate appearance.
Ohio Spiderwort is a favorite of many pollinators, including bees and butterflies, making it a great addition to any garden or natural landscape. Native Americans used Ohio Spiderwort for medicinal uses, in addition to its aesthetic characteristics, to treat illnesses such as joint pain, and snake bites.
| Scientific Name | Tradescantia ohiensis |
| Native Range | North America |
| Flowering Season | Late spring to early summer |
Obedient Plant
The obedient plant is a stunning perennial flower. That is native to North America. The plant is beloved for its beautiful pink, lavender, or white tubular flowers that bloom on long spikes throughout the summer months.
The obedient plant has a unique characteristic that defines it from other plants:-its stems and blossoms can be moved and positioned in any direction, hence the term “obedient.”This makes it a great option for gardeners who like to experiment with different plant arrangements. It is also low-maintenance and drought-tolerant, making it an excellent addition to a xeriscape landscape. The obedient plant is an excellent choice for any garden, whether you are an experienced or inexperienced gardener.
| Scientific Name | Physostegia virginiana |
| Native Range | North America |
| Flowering Season | Late summer to early fall |
Obovate Peony
The obovate peony is a stunning flowering plant that belongs to the Paeoniaceae family. This plant is native to Siberia, Mongolia, Japan, and Korea. It is also known as Paeonia obovate. The obovate peony produces large, bowl-shaped flowers that are typically purple-red in color with yellow centers.
The obovate peony is a hardy plant that is able to withstand cold temperatures, making it a popular choice for gardens in cooler climates. It is also a low-maintenance plant that requires minimal care, making it a great addition to any garden. The obovate peony blooms in late spring to early summer, adding vibrant color and a delightful fragrance to any landscape.
| Scientific Name | Paeonia obovata |
| Native Range | China, Japan, and Korea |
| Flowering Season | Late spring to early summer |
Oahu River Hemp
Oahu River Hemp, also known as Aiea hau kuahiwi or Hibiscus tiliaceus. It is a native Hawaiian plant found in the coastal regions of the Hawaiian Islands, including Oahu.
Oahu River Hemp does produce small, yellow flowers that have a hibiscus-like appearance. These flowers have a short blooming period and are followed by the formation of round seed capsules.
| Scientific Name | Sesbania tomentosa |
| Native Range | Hawaiian Islands and the Necker and Nihoa Islands |
| Flowering Season | Hawaii |
Old-Man’s Beard
Old Man’s Beard is also known as Clematis vitalba. It is native to Europe and parts of Asia. The Old Man’s Beard flower is not only visually stunning, but it also serves as a valuable source of food and shelter for various wildlife, including birds and insects.
Old Man’s Beard flower is a symbol of elegance and resilience. It attracts a variety of pollinators, including bees and butterflies, making it a valuable addition to any ecosystem.
| Scientific Name | Usnea |
| Native Range | Western Europe and North America |
| Flowering Season | Late spring to early summer |
Orange Blossom
Orange Blossom is scientifically known as Citrus sinensis. The orange tree is a member of the Rutaceae family. Orange Blossom flowers are small, white, and typically have five petals. The petals are often star-shaped or slightly rounded.
Orange Blossom flowers typically bloom in the spring. In some cultures, they are associated with purity, fertility, and good luck. It is believed to have calming properties, promoting relaxation and reducing anxiety.
| Scientific Name | Citrus sinensis |
| Native Range | Southeast Asia |
| Flowering Season | Late winter to early spring |
Ornithogalum
Ornithogalum is a stunning and unique plant. These plants are commonly known as starflowers or chincherinchees. It is native to regions across Europe, Asia, and Africa. They bloom during the spring and early summer months.
Ornithogalum plants are relatively easy to grow. They prefer well-draining soil and can tolerate a range of conditions, including full sun to partial shade. In various cultures, this flower represents purity, hope, and new beginnings.
| Scientific Name | Ornithogalum |
| Native Range | Eurasia and Africa |
| Flowering Season | Spring |
Osteospermum
The Osteospermum flower is stunning and vibrant. It is also known as the African daisy or Cape daisy. It is native to southern Africa. Osteospermum flowers have a daisy-like shape. The petals can be of various colors, including shades of purple, pink, white, yellow, and orange.
Some varieties have bi-colored or multicolored flowers with contrasting centers. Osteospermum flowers typically bloom from late spring to fall. They can reach a height of 6 to 24 inches (15 to 60 cm), depending on the species and variety.
| Scientific Name | Osteospermum |
| Native Range | South Africa |
| Flowering Season | Summer |
Old Man Of The Mountain
The Old Man of the Mountain flower is a stunning and unique plant. It is scientifically known as Arnica Montana. It is native to the mountainous regions of Europe and North America. This flower is known for its remarkable resemblance to the profile of a human face.
The delicate petals of this flower showcase a range of captivating colors, from soft shades of pink and lavender to vibrant hues of magenta and purple.
| Scientific Name | Hymenoxys grandiflora |
| Native Range | United States |
| Flowering Season | Summer |
Oregon Sunshine
Oregon Sunshine is scientifically known as Eriophyllum lanatum. It is native to the western regions of North America. It is a member of the Asteraceae family, which includes sunflowers and daisies. The flowers are typically small, measuring about 1 inch (2.5 cm) in diameter.
Oregon Sunshine typically blooms in the late spring to early summer months. Oregon Sunshine thrives in full sun and well-draining soil. It is well-adapted to dry and arid environments.
| Scientific Name | Eriophyllum lanatum |
| Native Range | United States, California, Pacific Northwest, Idaho, Oregon, Washington, Rocky Mountains, Montana, Utah, Wyoming, Southwest, Nevada |
| Flowering Season | Late spring through early summer |
Oriental Lily
The Oriental Lily is a beautiful flower. It is scientifically known as Lilium Orientalis. The flower can come in a wide range of colors, including shades of white, pink, red, burgundy, and various bi-colors.
Oriental lilies typically bloom during the mid to late summer months. They can reach heights of 2 to 6 feet (60 to 180 cm) or more, depending on the cultivar and growing conditions.
| Scientific Name | Lilium auratum |
| Native Range | Temperate zones of the Northern Hemisphere |
| Flowering Season | Mid- to late summer |
Oriental Poppy
The Oriental Poppy flower, with its vibrant and fiery colors, is a stunning addition to any garden. This unique flower is known for its large, papery petals that come in a variety of shades, including deep reds, vibrant oranges, and soft pinks.
Oriental Poppies typically bloom in late spring to early summer, usually from May to June. They have an upright growth habit, and mature plants can reach 2 to 3 feet (60 to 90 cm).
| Scientific Name | Papaver orientale |
| Native Range | Caucasus, northeastern Turkey, and northern Iran |
| Flowering Season | Mid-Summer |
Ornamental Onion
Ornamental Onion is scientifically known as Allium. It refers to a group of flowering plants in the Amaryllidaceae family. The flowers come in various colors, including shades of purple, lavender, pink, white, and even yellow.
They bloom in late spring to early summer. Ornamental Onions are generally easy to grow and maintain. They prefer full sun and well-draining soil. Once established, they are generally drought-tolerant.
| Scientific Name | Allium oreophilum |
| Native Range | Himalaya region |
| Flowering Season | Late spring to early summer |
Osteospermum-D-Coral-Sand
Osteospermum-D-Coral-Sand is a stunning flower. It is a popular variety of African daisies. It is scientifically known as Osteospermum ecklonis. These flowers often bloom profusely in spring and can continue to flower throughout the growing season with proper care.
This flower thrives in full sun and well-drained soil. Its ability to tolerate both heat and drought makes it a resilient and low-maintenance option for gardeners.
| Scientific Name | Osteospermum ecklonis |
| Native Range | Southern Africa |
| Flowering Season | Late spring to early summer |
Orthosiphon
The Orthosiphon is a mesmerizing flower. It is also known as Cat’s Whiskers. It is native to Southeast Asia. The flowers can come in various colors, including shades of white, lavender, blue, or pink.
It generally prefers full sun to partial shade. They thrive in well-draining soil and are often found in tropical and subtropical regions. The Orthosiphon flower holds an array of health benefits and has been used for centuries in traditional medicine.
| Scientific Name | Orthosiphon |
| Native Range | South East Asia, and Australia |
| Flowering Season | Spring and Summer |
Orthosiphon Rubicundus
The Orthosiphon rubicundus is a stunning flower. It is also known as the Red Cat’s Whiskers. It is native to Southeast Asia. The flowers are typically red, purplish-red, or pinkish-red in color.
It is a perennial herbaceous plant that can reach a height of up to 1 meter (3 feet). These plants typically thrive in full sun to partial shade. They prefer well-draining soil and are often found in tropical and subtropical regions.
| Scientific Name | Rubicundus |
| Native Range | Southeast Asia |
| Flowering Season | Late spring through summer |
Oxalis-Stricta
Oxalis-Stricta is a beautiful flower. It is commonly known as “common yellow woodsorrel” or “sourgrass.” It is native to Europe but has become naturalized in many parts of North America and other regions.
Oxalis stricta produces bright yellow, five-petaled flowers that are typically around 1/2 inch in diameter. These plants thrive in a variety of light conditions, including full sun to partial shade.
| Scientific Name | Oxalis stricta |
| Native Range | North American |
| Flowering Season | Late spring through summer |
Olearia
The Olearia is a stunning and unique flower. It is native to regions in Australasia, particularly New Zealand and Australia. It is also known as the Daisy Bush. The ray flowers can be white, pink, lavender, or blue, depending on the species.
Olearia species generally prefer full sun to partial shade. They thrive in well-draining soil and are adapted to the specific environmental conditions of their native regions.
| Scientific Name | Olearia tomentosa (J.C.Wendl.) |
| Native Range | Australia, New Zealand and New Guinea |
| Flowering Season | Spring and Summer |
Oxalis-Acetosella
Oxalis-Acetosella is a beautiful flower. It is native to woodlands and shaded areas in Europe, North America, and other parts of the world. The flowers bloom during the spring and summer months.
The flowers are usually white or pale pink, and they have delicate veins running through each petal. It thrives in well-draining, slightly acidic soil.
| Scientific Name | Oxalis acetosella |
| Native Range | Europe and parts of Asia |
| Flowering Season | Spring to Mid Summer |
Oxeye Daisy
The Oxeye Daisy is a stunning flower. It is scientifically known as Leucanthemum vulgare. It is native to Europe and Asia but has become widespread in North America. It typically measures around 1 to 2 inches (2.5 to 5 cm) in diameter.
They thrive in full sun but can tolerate partial shade. These flowers are capable and can grow in various soil types, but they prefer well-draining soil.
| Scientific Name | Leucanthemum vulgare |
| Native Range | Europe, Asia, North America, Australia and New Zealand |
| Flowering Season | Late spring to early summer |
Oleander Purple Nerium
Oleander Purple Nerium is a beautiful flower. It is native to the Mediterranean region. The flowers can grow up to 20 feet (6 meters) tall. Oleander Purple prefers full sun and thrives in warm, sunny climates.
It can tolerate a range of soil types but prefers well-draining soil. These flowers can range in color from deep purple to violet.
| Scientific Name | Nerium oleander |
| Native Range | Asia |
| Flowering Season | Spring, Summer |
Oyster
The oyster is a fascinating and unique flower. It is also known as Tradescantia spathacea. It is Native to southern Mexico and Guatemala. These flowers are usually white or pale pink and have three petals.
It can be grown in containers or as a ground cover in tropical gardens. It can thrive in warm and humid conditions.
| Scientific Name | Tradescantia spathacea |
| Native Range | Mexico |
| Flowering Season | Spring to Autumn |
Oenothera-Pallida
Oenothera-Pallida is a beautiful flower. It is commonly known as “Evening Primrose” or “Pale Evening Primrose.” It is native to North America. The flowers are usually pale to bright yellow.
It prefers full sun to light shade and can thrive in various soil types. It thrives in various soil types, making it a versatile and low-maintenance choice for gardeners.
| Scientific Name | Tradescantia spathacea |
| Native Range | North America |
| Flowering Season | Spring |
Question & Answer
What flower is for peace and unity?
The flower commonly associated with representing peace and unity is the White Dove Orchid (Habenaria radiata).
Which is the largest flower in the world?
The largest flower in the world is the Rafflesia arnoldii.
Which flower color is rare?
Blue is often considered a rare color in the flower kingdom.
Where do most flowers grow?
Flowers can grow in various habitats and regions across the world. They are found in diverse ecosystems, including meadows, forests, grasslands, mountains, deserts, wetlands, and even aquatic environments.
What do flowers produce?
Flowers produce nectar, a sugary liquid, which serves as a reward for pollinators.