The major tea growing areas are Kandy and Nuwara Eliya in Central Province, Badulla, Bandarawela and Haputale in Uva Province, Galle, Matara and Mulkirigala in Southern Province, Sri Lanka, and Ratnapura and Kegalle in Sabaragamuwa Province.
There are mainly six principal regions planting tea. Nuwara Eliya, Dimbula, Kandy Uda Pussellawa, Uva Province and South. Nuwara Eliya is an oval shaped plateau of 6,240 feet of elevation. Nuwara Eliya tea produces a unique flavour. Dimbula is one the first areas to be planted from 1870's. Height of ranging between 3500 ft to 5000 ft defines this planting area. South-western monsoon rain and cold weather from January to March are determining factors of flavour. Eight Subdistricts of Dimbula are Hatton/Dickoya, Bogawanthalawa, Upcot/Maskeliya, Patana/Kotagala, Nanu Oya/Lindula/Talawakele, Agarapatana, Pundaluoya and Ramboda.
Kandy is famous for Mid-grown tea. The first tea plantations were grown here. Tea plantations located 2000 ft to 4000 ft. Pussellawa/Hewaheta and Matale are the two main subdistricts of the region. Between Nuwara Eliya and Uva Province, Uda Pussellawa situated. Northwest monsoon prevails in this region. Plantations near Nuwara Eliya have a range of rosy teas. The two subdistricts comprised are Maturata and Ragala/Halgranoya. Uva area's tea have quite a distinctive flavour and widely used for blends. Tea plantations elevation rage from 3000 ft to 5000 ft. Being a large district Uva has a number of subdistricts, Malwatte/Welimada, Demodara/Hali-Ela/Badulla, Passara/Lunugala, Madulsima, Ella/Namunukula, Bandarawela/Poonagala, Haputale, Koslanda/Haldummulla. Low-grown tea is mainly originates from southern Sri Lanka. These teas grown from sea level to 2000 ft, thrive in fertile soils and warm conditions. These areas spread across four main subdistricts, Ratnapura/Balangoda, Deniyaya, Matara, Galle.
The high-grown tea thrive in above 1200m of elevation and warm climate and sloping terrain. Hence this type is common in Central highlands. Mid-grown tea is found in 600m-1200m altitude range. Various types of tea is blended to obtain required flavour and colour. Uva Province, and Nuwara Eliya, Dimbuala and Dickoya are the area mid-grown tea originate. Low-grown tea is stronger and less-subtle in taste and produced in Galle, Matara and Ratnapura areas.
Over 221,000 hectares or approximately 4% of the country’s land area is covered in tea plantations. The crop is best grown at high altitudes of over 2100 m, and the plants require an annual rainfall of more than 100–125 cm.