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Tobacco is a seasonal agricultural product that is not a food commodity, but rather a plantation commodity. Tobacco can also be chewed, its rich secondary metabolite content also makes it useful as a pesticide and raw material for medicine. The leaves of this tree are often used as a raw material for smoking, either in a pipe or rolled into cigarettes or cigars. Tobacco leaves can also be chewed or sucked, and some people inhale the powder through their nose.

Tobacco grows as an annual plant with broad hairy leaves and trumpet-shaped flowers in white, pink, or red. It can reach 1–3 meters in height in warm climates with fertile soil.

Post-Harvest Process: After harvest, tobacco leaves undergo curing to develop aroma, flavor, and color:

Flue-cured: Artificial heat drying, producing golden-yellow leaves with high sugar content (e.g., Virginia).

Air-cured: Naturally dried in ventilated barns, resulting in brown leaves with low sugar and high nicotine (e.g., Burley).

Sun-cured: Dried under direct sunlight, common for oriental tobacco.

Fire-cured: Dried near wood smoke, giving a distinctive smoky aroma.

After curing, fermentation is often done to enhance complexity and reduce harshness.

Main Uses: Cigarettes, cigars, pipe tobacco, chewing tobacco. Other uses include natural pesticide (nicotine), pharmaceuticals (proteins & vaccines), fertilizer, and bioenergy.