You might try more light and more air movement during the growing months. I cannot see the size of the plant but these are prodigious bloomers on mature plants. I regularly get 8-10 spikes on plants in 5" pots.
Last edited by Cym Ladye; 11-04-2015 at 06:29 PM..
It grows in central mountain region of Taiwan, at the elevated of 200 meters to 1000 meters. Therefore, it like warm and humid weather.
It also happily grows outside or in an unheated greenhouse in Northern California. I saw one at our club meeting Friday night with 20+ spikes on a plant in a 1 gallon pot.