80-90 percent of Ceylon cinnamon are grown in Sri Lanka. Two third of Cassia cinnamon comes from Indonesia, and the rest are grown in China, Burma, and Vietnam.
Cinnamon thrives in USDA zones 9-11 and can survive frosts down to 32 degrees F. (0 C.); otherwise, the tree will need protection. Grow Ceylon cinnamon in full sun to part shade. The tree prefers higher humidity of 50% but will tolerate lower levels. They do well in containers and can be pruned to a smaller size of 3-8 feet (0.9 to 2.4 m.). Plant the tree in an acidic potting medium of half peat moss and half perlite. Let’s look at the best conditions for the growth of cinnamon.
Cinnamon plants do well under full sun, but in very hot and dry weather, they benefit from some afternoon shade.
Cinnamon plants grow where a natural layer of leaf mold in the jungle keeps plants nourished. Good drainage is also important. Heavy clay or hardpan soils are not a recipe for success. If your soil is poor, consider container culture.
Cinnamon plants like the regular rainfall they receive in the jungle, so you should try to replicate this with irrigation when rain is scarce. Keep the surface of the soil moist, and use mulch to keep the roots cool and moist.
Temperature and Humidity
Cinnamon plants like it warm and humid. In their native habitat, temperatures that average 80 degrees Fahrenheit promote healthy growth over the life of a cinnamon plant.
Cinnamon plants are light feeders. You can place a handful of timed-release fertilizer in the planting hole to help plants get established; they don’t need further feeding.
Potting and Repotting
Start with a large container, at least 18 inches, to give your cinnamon plant room to grow and mature. Fill the pot with a lightweight loam. You can control the growth of your cinnamon plant by keeping it somewhat root-bound. An indoor plant can remain in a 36-inch pot for the duration of its lifespan.