All these are great questions and have a great deal to do with greenhouses. You will see a growing number of folks using greenhouses to grow orchids and a slew of other plants.

To answer the question simply, Yes you can use greenhouses for orchids but there are a few stipulations. They will usually do very well and may even bloom more frequently for you.

To answer some of the questions raised earlier. An orchid green house can be a very good place to grow you favorite plants including orchids. Depending on the style of your greenhouse both the light and temperature can be maintained.

Some orchids will grow very well in hot, tropical climates, like Vandas. Others like the see a temperature decrease in the night time like the phalaenopsis orchids.

Your greenhouse will be a special place for you to come to enjoy your hobby. It will be your "sanctuary".

Before you purchase a greenhouse be sure you fully understand what will be necessary to help control both the temperature and the light. For example, growing orchids like phalaenopsis orchids like bright light but not necessarily direct sunlight. They do like a West setting and late day sun. The Cattleya orchids do well in sunlight.

Greenhouses vary both in size, shape and cost. Some use wood as the frame, others use aluminum. It seems that aluminum stands up better to the whims of nature than does wood. It also looks better for a longer period of time.

If you live in the Northern part of the US you definitely will need a heat source for your growing plants. This could be gas fired small furnaces or electric heat. Remember, when you turn the heat on humidity goes down.

Good ventilation and humidity are very important. Most plants including growing orchids depend on air circulation. A fan can do this very easily. Be sure to keep the fan clean to avoid cross pollination of disease from one plant to another.

Growing orchids in greenhouses will allow you to grow plants year round. You plant what you want, when you want to, and how you want. You can control the light, temperature, watering and humidity so you will have a healthy, viable greenhouse for your hobby.