Different light needs?

[Ray]

Originally Posted by Dimples

Ray - they would be growing in similar conditions in the wild, but the successfully established seedlings of most plants will be growing under or next to larger plants present in the habitat, so may not receive the same light intensity as the parent plant until they get older/bigger and are no longer shaded by the surrounding plants.

Possibly, but if you consider the dust-like qualities of orchid seed, who's to say where they end up!