I got to know that its name is Ugni molinae and its common name is Chilean guava. Its fruit is tasty but very small. Its an ornamental plant Its fruit is very fragrant and a very good pot plant.
It is suitable for Pakistani weather conditions. Its height is 1 to 1.5 metres. It tolerates -10'C and loves heat. Can be grown in all types of soil,and self pollination
If feasible add it in Flora Pakistan Database. Some pictures are here
Chilean guava(my plant)




A picture from internet

