Flowers That Start With O

4 flowers Animals and nature Checked 9 Oct 2026

Here are 4 flowers that start with O, each with a one-line description so you can tell what it is. They are listed below with what each one is.

Only four flowers begin with O, so this page is quick to learn by heart. The orchid is the famous one, and the name covers a huge family of plants with flowers in many shapes. Oriental poppy is a hairy perennial poppy grown in many gardens, and oleander is an evergreen shrub with pink, red or white blooms.

The rare pick is orris, a German iris with large white flowers and lavender-tinged falls. Children usually know orchid first. Older students can add orris to surprise a quiz partner.

Flowers starting with O: 4
Best known: orchid, oriental poppy
Longest name: oriental poppy

All flowers that start with O

#	Name	What it is
1	oleander	evergreen shrub with pink, red or white flowers
2	orchid	any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors
3	oriental poppy	commonly cultivated Asiatic perennial poppy having stiff heavily haired leaves and bright scarlet or pink to orange...
4	orris	German iris having large white flowers with lavender-tinged falls and a fragrant rhizome

Questions people ask

How many flowers start with O?

This list has 4 flowers starting with O, from well-known ones like orchid, oriental poppy, oleander to rarer kinds.

What flowers start with O?

Well-known examples are orchid, oriental poppy, oleander.

Source: Princeton WordNet, a public dictionary database, reviewed by our editors to keep only clear, real members of the list. Meanings are short dictionary glosses.

See every letter on one page: flowers A to Z