Comparettia
Posted November 15th, 2010 by Marc CohenCategories: Intermediate Growers, Mini Orchids, Photos, Problems
Often I like to point out that many orchids are easy to grow, but some varieties deserve their difficult reputations. For example, this purple and white Comparettia ranks as one of the fussier members of the orchid family. It may resemble a simple Oncidium, but don’t be fooled. Cultivating these blooms takes some work.
This Comparettia species is native to Colombia, where it usually grows as an air plant on the branches of guava trees. They’re tough to keep in cultivation, demanding constant high humidity and good air movement. When I first bought this plant, it started to shrink rather than grow. I experimented by varying light and temperature conditions, but its new leaves and roots kept dying.
Finally, I placed the plant in very high humidity, up to 90%. Many orchid varieties would rot from the excessive moisture, but this Comparettia began to grow and thrive. With some patience, I was rewarded with these colorful blooms. As an interesting contrast to the purple polka dots on front, the flowers are white on back. They’re a reward that’s worth the effort.
Water plants marked by the post-its in front & back rooms.














































