Lychee trees in Medak district of AP?

I would love to have a couple of Lychee Trees in my farm. Do they grow in Medak Dist of AP? If yes where can I get good saplings?

I planted 2 two year old saplings in my fruit orchard (near Mokila, Ranga Reddy D.T.) which I procured from Satyadev Nursery, Kadiyam, Rajahmundry. Satyadev is biggest in India by some accounts. They told me that they did not have any luck these trees bearing fruit. Nevertheless I want to see if I can do that. These trees thrive in cold climate and abundant in West Bengal high elevations. Excellent fruit not to mention that trees can be ornamental.

Saplings established fine and new leaves are observed. I will post few pics later.

Srinivas