If you're referring to Phalaenopsis spikes then here's the explanation...
Most people grow Phalaenopsis using pot culture. When grown potted, they are grown "upright".
Here's the thing...Phalaenopsis don't grow that way in nature. They grow sideways with the leaves drooping downwards. The spikes also grow downwards.
Now certain species of Phalaenopsis have short spikes and others have long ones.
Many of the Phalaenopsis in places like the Home Depot or Lowes carry Phal hybrids with long spikes.
So...
Growing a Phal with long flower spikes in potted culture means the spike has a tendency to not grow upright. When I worked at a nursery, the spikes were always supported by thin wires and trained to curve a certain way.
Orchids like Vandas don't have this problem because in nature they do grow upright.
However, if you're talking about Dendrobiums. Some Dendrobiums grow pendulously (downwards). I'll name a few: Dendrobium nobile, Den anosmum, Den pierardii, Den crepidatum.
Of course, many places grow Dendrobiums in pot culture. This is no exception for the hybrids involving Den nobile or it's close kin.
For the Dendrobiums that are considered "Nobile Types", the canes need to be supported in order to grow upright. If you took the supports off, they'll start growing they way they do in nature, which is downwards.
Dendrobium hybrids with any Dendrobium in the section Spathulata in the parentage don't have to be supported because they naturally grow upright. Some examples of Dendrobium species that belong to the section Spathulata are: Den lineale, Den antennatum, Den strebloceras, Den stratiotes.
To answer your question, it's a matter of what kind of orchid you're talking about and how you're growing them and what you're trying to achieve. But for the most part many orchids don't need to be supported.
Last edited by King_of_orchid_growing:); 05-26-2009 at 01:23 AM..
|