Dendrobium polysema at the Royal Botanical Garden, Edinburgh. This photo shows the unopened buds.
Vanilla planifolia is an epiphytic vine in the Orchidaceae family. It is native to Central America and Northern South America, found growing in wet tropical forests or margins. This species is the main source of vanilla, it also has attractive yellow flowers.
V. planifolia is easy to cultivate. It enjoys a moist but well drained medium such are large woodchips. It should be grown in a well lit space out of direct sunlight, temperatures should not drop below 10 degrees Celsius.
This species roots freely from cuttings. They can be rooted just in water. I took cuttings four weeks ago, I chose a free draining coir based medium to root mine. The photos below show root development after four weeks and repotting. Shoot growth should initiate over the next week or two.