70+ Outstanding Flowers that Start with Letter O

Flowers are one of the most beautiful and diverse creations of nature. They come in various colors, shapes, and sizes, and each one has its own unique beauty. In this comprehensive guide, we will explore 75 flower names that start with the letter “O” and learn about their origins, meanings, and interesting facts.

1. Orchid

The orchid is a delicate flower that comes in many different colors and patterns. It symbolizes love, luxury, and beauty. It is also the official flower of the 14th wedding anniversary. Orchids are found all over the world, but they are most commonly grown in tropical regions.

2. Osteospermum

Also known as the African Daisy, Osteospermum is a bright and cheerful flower that blooms in shades of purple, pink, yellow, and white. It symbolizes happiness, optimism, and friendship. These flowers are native to Africa but can now be found in many parts of the world.

3. Oleander

The Oleander is a vibrant and showy flower that produces clusters of flowers in shades of pink, red, white, and yellow. It symbolizes beauty, grace, and romance. However, this flower is also highly toxic if ingested and should be handled with caution.

4. Oxeye Daisy

The Oxeye Daisy is a common wildflower that grows in open fields and meadows. It has a bright yellow center surrounded by white petals and symbolizes purity, innocence, and motherhood. This flower is also known as the “day’s eye” because it closes at night and opens in the morning.

5. Orange Blossom

As its name suggests, the Orange Blossom is a fragrant flower that blooms in clusters of white flowers with a hint of orange. It symbolizes purity, chastity, and eternal love. These flowers are commonly used in wedding bouquets and decorations.

6. Obedient Plant

The Obedient Plant gets its name from its unique ability to stay in position when moved by an outside force. Its flowers come in shades of pink, purple, and white, and they symbolize strength, determination, and adaptability. These flowers are native to North America.

7. Osmanthus

The Osmanthus is a small but fragrant flower that blooms in shades of white, yellow, and orange. It symbolizes love, romance, and friendship. This flower is commonly used in teas and perfumes due to its pleasant scent.

8. Oxalis

Also known as the Wood Sorrel, the Oxalis is a small flower that comes in shades of pink, purple, white, and yellow. It symbolizes luck, love, and joy. This flower is commonly found in gardens and is often considered a weed due to its quick-spreading nature.

9. Oriental Lily

The Oriental Lily is a large and fragrant flower that comes in shades of white, yellow, pink, and red. It symbolizes purity, innocence, and motherhood. These flowers are commonly used in floral arrangements and can be found all over the world.

10. Ozark Sundrop

The Ozark Sundrop is a bright yellow flower that blooms in the summer months. It symbolizes happiness, joy, and new beginnings. These flowers are native to North America and can be found in fields and open meadows.

11. Orange Hawkweed

Also known as Devil’s Paintbrush, the Orange Hawkweed is a bright orange flower that grows on long stems. It symbolizes passion, creativity, and persistence. This flower is native to Europe but can now be found in many parts of the world.

12. Oriental Poppy

The Oriental Poppy is a large and showy flower that comes in shades of pink, orange, and red. It symbolizes beauty, passion, and remembrance. These flowers are commonly used in gardens and are native to Asia.

13. Obedient Plant

The Obedient Plant is a small but unique flower that blooms in shades of purple and pink. Its name comes from its ability to stay in position when moved by an external force. This flower symbolizes strength, determination, and adaptability.

14. Osprey

The Osprey is a beautiful white flower that grows on a tall stem. It symbolizes purity, innocence, and motherhood. This flower is commonly used in floral arrangements and can be found all over the world.

15. Ornamental Onion

The Ornamental Onion, also known as Allium, is a unique-looking flower that comes in shades of purple, blue, and white. It symbolizes unity, harmony, and perfection. These flowers are commonly used in gardens and can be found in many parts of the world.

16. Opuntia

Also known as Prickly Pear, the Opuntia is a cactus flower that blooms in shades of yellow, orange, pink, and red. It symbolizes strength, resilience, and endurance. This flower is native to the Americas and can be found in arid regions.

17. Oenothera

The Oenothera, also known as Evening Primrose, is a small but beautiful flower that blooms in shades of yellow, pink, and white. It symbolizes love, affection, and beauty. These flowers are commonly used in herbal medicine and can be found all over the world.

18. Oxeye Sunflower

The Oxeye Sunflower is a bright and cheerful flower that blooms in shades of yellow and orange. It symbolizes happiness, joy, and optimism. These flowers are commonly used in gardens and can be found in many parts of the world.

19. Ocean Spray

Also known as Silverberry, the Ocean Spray is a shrub that produces small white flowers in the summer months. It symbolizes cleanliness, purity, and tranquility. These flowers are native to North America and are commonly used in landscaping.

20. Oca

The Oca is a small but colorful flower that comes in shades of yellow, orange, pink, and purple. It symbolizes creativity, energy, and passion. This flower is native to South America and is commonly used in traditional medicine.

21. Old Man Cactus

The Old Man Cactus, also known as Bunny Ear Cactus, is a unique-looking flower that grows on tall stems covered in white hair. It symbolizes wisdom, maturity, and protection. This cactus flower is native to Mexico and can be found in desert regions.

22. Old World Climbing Fern

The Old World Climbing Fern is a climbing plant that produces small white flowers in the summer months. It symbolizes determination, growth, and perseverance. These flowers are native to Europe but can now be found in many parts of the world.

23. Ostrich Fern

The Ostrich Fern is a large and elegant flower that blooms in shades of green. It symbolizes grace, elegance, and abundance. This flower is commonly used in floral arrangements and can be found in many parts of the world.

24. Olive Tree

The Olive Tree produces small white flowers that turn into olives when pollinated. It symbolizes peace, wisdom, and longevity. This tree is native to the Mediterranean region but can now be found in many parts of the world.

25. Oyster Plant

Also known as Moses-in-the-Cradle, the Oyster Plant is a small flower that produces white flowers with purple centers. It symbolizes protection, balance, and adaptability. This flower is commonly used as a decorative plant and can be found in many tropical regions.

More Flowers that Start with Letter O

S.No	Flower Name	Description
1	Orchid	A diverse and widespread family of flowering plants, with blooms that are often colorful and fragrant.
2	Osmanthus	Known for their strong fragrance and small clusters of yellow or white flowers.
3	Oxeye Daisy	A perennial plant with daisy-like flowers.
4	Orlaya	Known for their delicate white flowers that resemble lace.
5	Oriental Lily	Known for their large, fragrant, and bright-colored flowers.
6	Oleander	An evergreen shrub known for its showy funnel-shaped flowers.
7	Oenothera (Evening Primrose)	Known for their bright yellow flowers that bloom in the evening.
8	Oahu River Hemp	A plant native to the Hawaiian Islands with yellow flowers.
9	Obedient Plant	Known for their spikes of tubular pink or white flowers.
10	Obovate Peony	A type of peony with large, round petals.
11	Ohio Spiderwort	Known for their three-petaled blue or purple flowers.
12	Old Lady Cactus	A type of cactus with spiny stems and pink flowers.
13	Old Man of the Andes	Another type of cactus, named for its hairy appearance.
14	Oregon Grape	An evergreen shrub with clusters of yellow flowers and dark blue berries.
15	Oakleaf Hydrangea	Known for their large, oakleaf-shaped leaves and cone-shaped clusters of white or pink flowers.
16	October Daphne	A succulent plant with clusters of pink or red flowers.
17	Orange Blossom	The fragrant flower of the orange tree.
18	Ornamental Onion	Known for their spherical clusters of purple or white flowers.
19	Oriental Poppy	Known for their large, brightly colored flowers.
20	Ozark Sundrops	Known for their large, yellow flowers that bloom in the evening.
21	Orchid Cactus	Known for their large, showy flowers.
22	Ozark Bluestar	Known for their clusters of blue or purple star-shaped flowers.
23	Ornamental Kale	While not technically a flower, it’s known for its colorful foliage.
24	Oxalis	Also known as wood sorrel, they have small, delicate flowers in a variety of colors.
25	Osteospermum	Also known as African daisies, they have large, daisy-like flowers.
26	Opuntia (Prickly Pear)	A type of cactus known for their flat, paddle-like stems and colorful flowers.
27	Orpine	Known for their clusters of star-shaped pink or purple flowers.
28	Onion Weed	Known for their small, white, bell-shaped flowers.
29	Orange Hawkweed	Known for their bright orange, daisy-like flowers.
30	Oriental Cherry	Known for their beautiful, fragrant blossoms.
31	Osage Orange	A tree known for its green, bumpy fruit, but also has small, inconspicuous flowers.
32	Oxslip	Known for their drooping clusters of yellow flowers.
33	Overcup Oak	A type of oak tree with small, inconspicuous flowers.
34	Owl’s Clover	Known for their dense spikes of pink or purple flowers.
35	Oyster Plant	Known for their purple flowers that resemble oysters.
36	Obregonia (Artichoke Cactus)	Known for their unique, artichoke-like appearance.
37	Ochagavia	A type of bromeliad with colorful flowers.
38	Okra	While primarily grown for its edible pods, Okra also has hibiscus-like flowers.
39	Omphalodes	Known for their small, blue, star-shaped flowers.
40	One-Flowered Cancer Root	Known for their single, white, tubular flowers.
41	Opium Poppy	Known for their large, brightly colored flowers.
42	Ornamental Tobacco	Known for their tubular, fragrant flowers.
43	Ozark Witch Hazel	Known for their fragrant, yellow flowers that bloom in winter.
44	Oregano	A culinary herb that also produces clusters of small, white or purple flowers.
45	Oriental Arborvitae	An evergreen shrub with small, inconspicuous flowers.
46	Oriental Plane	A large tree with round, spiky fruit and small flowers.
47	Oriental Bittersweet	A vine known for its clusters of yellow flowers and bright orange fruit.
48	Oriental Limonium	Known for their clusters of small, papery flowers.
49	Oriental Raisin Tree	Known for their small, yellow flowers and raisin-like fruit.
50	Orach	A leafy green plant with tiny, inconspicuous flowers.
51	Orange Coneflower	A type of coneflower with bright orange flowers.
52	Orange Jasmine	Known for their fragrant, white flowers and orange fruit.
53	Orange Milkwort	Known for their clusters of small, orange flowers.
54	Orange Mint	A type of mint with small, lavender-colored flowers.
55	Orange Nasturtium	Known for their bright orange, edible flowers.
56	Orange Peel Clematis	Known for their bell-shaped, orange flowers.
57	Orange Rocket Barberry	An ornamental shrub with small, yellow flowers.
58	Orange Star	Known for their star-shaped, orange flowers.
59	Orchid Tree	Known for their large, orchid-like flowers.
60	Oregon Teasel	Known for their spiky, cone-shaped inflorescence with small, purple flowers.

Conclusion:

Overall, these 25 flowers that start with the letter O each have their own unique characteristics and symbolism, making them a beautiful addition to any garden or floral arrangement. Whether you are drawn to their beauty, meaning, or cultural significance, these flowers are sure to bring joy and add a touch of charm to any space. So the next time you come across an Oxeye Sunflower or an Oenothera, take a moment to appreciate their beauty and the stories they hold within their petals. And who knows, perhaps you’ll discover a new favorite flower that starts with the letter O.