Here are the varying types of flowers with names that begin with the letter O. With an emphasis on common and easy to grow varieties.
Table of Contents
Obedient Plant
Physostegia virginiana, the obedient plant, obedience or false dragonhead got its name because you can bend the individual flowers in any direction.
Obovate Peony
This plant has white to purple-red flowers and its lower leaves consist of no more than nine leaflets or segments.
Ohio Spiderwort
Old Lady Cactus
In the spring or summer, this cactus sprouts red or purple flower around the top.
Old Man of the Andes
Oleander Plant
Nerium oleander, usually referred to as oleander, is an upright, rounded evergreen sub-tropical to tropical shrub produces purple, pink or white five-petaled funnel-shaped flowers during the summer to fall months.
Orchid
Orchids occur in every habitat/terrain on the planet, except for Antarctica and true deserts.
Oregon Grape
This plant sprouts thick bunches of yellow flowers in early spring, succeeded by dark bluish-black berries. In 1899 Oregon adopted the Oregon Grape (Berberis aquifolium) as the Official State Flower.
Oriental Lily
Lilium ‘Stargazer’ is a hybrid lily of the ‘Oriental group’. Oriental lilies are known for their fragrant perfume, blooming mid-to-late summer. Stargazers are easy to grow and do best in full sunlight.
Oriental Poppy
Ornamental Onion
Wild onions have flat leaves while wild garlic has round leaves.
Osteospermum
Oyster Plant
It also goes by the names bear’s breeches, sea dock, bearsfoot, and it is considered to be an invasive species in some regions.
Ox Eye Daisy
Leucanthemum vulgare (Ox-eye Daisy, oxeye daisy, dog daisy) is generally cultivated and ready as a perennial flowering ornamental plant for gardens.
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