Clove of commerce is aromatic, dry, fully-grown, but unopened flower buds of clove (Syzygium aromaticum) tree. Besides clove, clove oil obtained from buds stems and leaves, and oleoresin from buds and stems also have commercial value. The essential oil of clove is rich in eugenol, which has medicinal values.
It was introduced into India around 1800 AD by the East Indian Company in their spice garden in Courtallam, Tamil Nadu. From there, its cultivation extended to high ranges of Nagercoil in the Kanyakumari district of Tamil Nadu, Thiruvananthapuram, and Kollam to the Mekkara hills in Thirunelveli district. At present, important clove-growing states are Kerala (Quilon, Trivandrum, Calicut, Kottayam districts), Tamil Nadu (Nilgiris, Nagercoil, Ramanathapuram, Tirunelveli and Kanyakumari districts), Karnataka (South Kanara district), Maharashtra (Ratnagiri district), and Andamans.