The Flowers That Start With O: 9 Of The Most Astonishing

More than Meets the Eye

Talking about the flowers of the Oleander or the Ornamental Onion doesn’t conjure images of astonishing beauty in one’s mind. These flowers that start with O may surprise you, though. They may be uncommon, but one cannot deny their loveliness. Many of these flowers that start with O carry their own secrets as well. Some hide sweetness, while others hide usefulness. Some more even hide danger.

Hence, one should never underestimate a plant’s blossom. They are certainly more than meets the eye.


More articles about flowers:

List Flowers


1. Oleander

  • Botanical name: Nerium oleander
  • Plant Class: Perennial
  • Bloom time: Summer

The Oleander plant is a great natural windbreaker, in addition to its tolerance of poor conditions, which is why it is a favorite in parks, gardens, and roadsides. What makes this plant astonishing, however, is its showy blossoms of red, pink, and white, and yellow that look, interestingly, like roses. Don’t be fooled, though. As roses may have thorns, the Oleander has poison in its proverbial veins, and it’s highly toxic to both humans and animals.

Due to its hardiness and toxicity, the oleander has come to symbolize power, endurance, and a spirit that never gives up in spite of hardship.


2. Oregano

  • Botanical name: Origanum vulgare
  • Plant Class: Perennial
  • Bloom time: Summer

You may know Oregano as the pungent and minty herb redolent in Italian and Mediterranean dishes. One cannot ignore, however, the naturally-occurring bouquets of pink and purple oregano blossoms during summer! These blooms grow in profusion and will add to the sweetness of an already fragrant plant.

Oregano, due to its medicinal properties, represent healing and well-being.


3. Orange Blossoms

  • Botanical name: Citrus sinensis
  • Plant Class: Perennial
  • Bloom time: Summer to early fall

Another bloom that you may overlook is the flowers of the orange tree. It’s bright and much-loved fruit seems to grab all the attention away from this humble-looking bloom. And yet, what the orange blossoms lack in looks, it makes up for in fragrance and its many applications. These blooms are incredibly fragrant, significant in perfumery, and a favorite for teas!

People, through the ages, associate the fragrant blossoms of the orange tree with happiness and good fortune.


4. Ornamental Onion

  • Botanical name: Allium giganteum
  • Plant Class: Perennial
  • Bloom time: Late spring to early summer

Onions may be the last plant on your mind when you think of astonishing flowers. The Allium giganteum will prove you wrong, though. These ornamental onions blossom globe-shaped inflorescences in purple, mauve and lilac colors! This Allium’s usefulness and prestige earn it the Award of Garden Merit (AGM) from the Royal Horticultural Society.

The Ornamental Onion’s globe of flower clusters a potent symbol of royalty and courage.


5. Orchid

  • Botanical name: Orchidaceae
  • Plant Class: Perennial
  • Bloom time: Year-round

Orchids are, arguably, one of the most beautiful, sought-after, and prized flowers in the world. Their magnificent blooms are so unique and distinct that you can easily pick them out from a group of plants. Also, the orchid’s fragile and exacting nature only add to its loveliness. These unique qualities are the reason for the Orchid’s representation of extreme but delicate beauty or love that comes only once in a lifetime.

Most importantly, for our fifth flower that start with O, we’ll feature five different varieties of the beautiful orchid family!

Boat Orchid

Botanical name: Cymbidium

Moth Orchid

Botanical name: Phalaenopsis

Tiger Orchid

Botanical name: Odontoglossum


Botanical name: Miltonia

Slipper Orchid

Botanical name: Paphiopedilum


Hoang Quang

Hello! I’m Quang Hoang and Grow Gardener is my little nook for all the adventures, and occasional misadventures, on my journey in gardening! As I continue to awaken life in little seeds and struggle to keep flora alive, I’ll be here sharing with all of you what I’ve learned! Join me in my little garden, and let’s grow together.

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