Types of trees or plants with O

• Orchid

  Flowering plant with diverse blooms

• Olive

  Olive tree, classic Mediterranean fruit tree.

• Oak

  Large deciduous or evergreen tree

• Oregano

  Aromatic herb used in cooking

• Orange

  Orange tree, citrus plant grown for its fruit.

• Onion

  Bulbous vegetable plant

• okra

  Plant producing edible green pods

• oleander

  Flowering shrub, often poisonous

• Orange blossom

  Flower of the orange tree

• opium

  Opium poppy, flowering plant used medicinally.

• oat

  Cereal grass grown for its grain; common crop plant.

• Oxalis

  Oxalis is a genus of sorrel-like flowering plants.

• Oaktree

  Means oak tree; valid name for the oak species.

• Opium plant

  Opium poppy plant, Papaver somniferum, is a crop.

• Oliwka

  "Oliwka" is Polish for olive tree, a fruit tree.

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• Osage orange

  Osage orange is a North American tree species.

• Octopus tree

  Octopus tree is Schefflera actinophylla, a houseplant/tree

The words in the list Types of trees or plants with O come from players of the word game Categories game.