Scientific Classification of the Cinnamon Plant and Required Environmental Conditions for Cultivation

Botanical classification
Kingdom – Plantae
Sub Kingdom – Pteridobiotina
Phylum – Angiosperms
Class – Magnolidae
Order – Laurales
Family – Lauraceae
Genus – Cinnamomum
Species – Cinnamomum verum J. Presl

The cinnamon plant is an evergreen, perennial, tropical species. Under natural conditions, it can grow over 20 meters in height, and in rainforests, some trees have been observed reaching the canopy layer, about 35 meters high. However, in commercial cultivation, the plants are regularly pruned for harvest, maintaining a height of about 2.5 to 3 meters. Growth is controlled to form a bush-like structure consisting of several shoots arising from the base of the stem.
Ideal Environmental Conditions for Growing Cinnamon
• Temperature
Cinnamon grows best in warm climates with temperatures ranging between 25°C and 30°C.
Since Sri Lanka’s wet, intermediate, and dry zones fall within this range, the island offers ideal conditions for widespread cinnamon cultivation.
• Rainfall
Regions receiving more than 1875 mm of annual rainfall are naturally suited for cinnamon.
In areas with lower rainfall, cinnamon can still be cultivated successfully with proper irrigation and water-management techniques.
• Elevation
Cinnamon can be grown from sea level up to about 700 meters.
However, growth becomes slightly slower as elevation increases.
• Humidity
A relative humidity of 75%–85% is optimal for healthy cinnamon growth.
In drier zones, farmers use methods like mulching and shade management to create supportive microclimates for the plants.
Soil Requirements for Cinnamon Cultivation
Sri Lanka’s wet zone is home to red, well-drained soils that have long been considered the best for cinnamon.
Other highly suitable soil types include:

• Red soils
• Sandy or sandy-loam soils
• Well-drained soils with good root aeration
  Even in dry-zone regions, cinnamon can be cultivated successfully by improving soil structure and ensuring reliable water availability.
  Main Cinnamon-Growing Regions in Sri Lanka
  Traditionally, the districts of Galle, Matara, Hambantota, Kalutara, and Ratnapura have been Sri Lanka’s cinnamon heartlands.
  Today, cultivation has expanded dramatically, with over 14 districts now producing cinnamon. Many of these areas lie between sea level and 700 meters, offering excellent environments for commercial growth.