From India, grows in a cooler place. In nature:  H.arnottiana grows in the tropical zone of Himalaya 305-910 meters over the sea. Cool monsoon winds and high humidity. I grow mine in a windowsill at north. No heat in the room There are about 20-25 flowers in each umbel. The fragrance is nice, like perfume. Flower size about 1-1,5cm with white corona and off-white corolla. Dark green leaves 7-12cm.