If you are looking at flower tour in Bhutan then we can tell you that you will see a wide variety of flowers. Varying altitudes in Bhutan makes it possible for all kind of flowers to grow in Bhutan. Southern part of Bhutan is as low as 300 meters and rises to about 5000 meters in the north.
South has tropical variety of flowers wild the north has cold and high altitude flowers. Flowers grow through out the year in the south while short summer in north makes it possible for flowers to grow only in summer.