Hello, everyone.

Two years ago, I bought three small Tolumnia Jairak Rainbow orchids, each a different color, and each in a 2" terracota pot. They were in bloom at the time I bought them, and sit on my kitchen windowsill. They receive direct morning sun and bright indirect light after 11am. They get watered twice a week because there is not much fir bark in the small pots, and overall look very healthy.

My problem is, they have not bloomed since I bought them. Am I doing something wrong?