The cinnamon tree, also known as Cinnamomum zeylanicum, is a tropical tree with sweet and spicy scented bark that grows in Sri Lanka, Madagascar and The Seychelles. 

It has leathery green leaves, small white flowers, and blue berries.

Peppermint, also known as Mentha piperita, is a hybrid plant of water mint and spearmint. It is indigenous to Europe and the Middle East. This plant has light purple flowers and serrated green leaves with a fragrant minty aroma.

The lemon tree, also known as Citrus limon, is an evergreen tree native to South Asia that can reach a height of 10-20 feet. It produces fruit and white blossoms which have a sweet fresh aroma.