Congratulations on acquiring this quite rare species of Habenaria. I used to collect a few of them from the limestone hills near where I live but have not seen them in their natural habitat lately - most probably they have been overcollected. They grow in rotten leaf fall mixed with soil in limestone pockets in the hills up to 500 feet. The climate here is hot all year round 80 - 100 deg F with a distinct dry season from Dec to Feb when the temperature may go down to the lower or mid 70s. The plant will die down after blooming and go into a dormant state for a few months with only the tuber remaining under ground. Usually from mid-April when the first rains appear new growth will begin and the plant will bloom when it is mature - any time during the summer months. The blooms are a very light pink and the leaves are just as attractive as the blooms. We water our plants twice a day during the growing season with weekly fertilising and no watering during the dormant months.Good luck with the plant.
I am posting 2 pictures of the plant, taken at a friend's grow area, showing the leaves and blooms taken with a compact camera. I apologise for the poor quality of the pictures. I don't grow these any more.