An Erect Plant With A Single Woody Stem. It is an annual herb with a deep taproot and an erect stem that becomes woody with age. Its size is less than 6 feet.

In cold climates woody plants further survive winter or dry season above ground as opposite to herbaceous plants that die back to the ground until spring. Stem is usually the above-ground erect ascending part of the plant body that develops from the plumule bears leaves and flowers grows by means of a terminal bud and shows distinction of nodes and inter-modes. These are different from creepers in being single plants which do not root from the nodes and thus do not form daughter plants.
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A tree is a perennial plant with a single elongated stem. It has a distinctive fragrance thrives in sunny. Parenchyma cells which make up the bulk of the stem are thin walled with large vacuoles. The diameter of a tree is more than 3 inches.