Many orchid plants bloom only once a year, though some varieties bloom a few times. The plants are dormant for the rest of the year and may seem like they are actually dying. The truth is that some orchid plants do not last for long periods of time, but many wild varieties live for many years. With proper care, your indoor orchids can last just as long.
Healthy plants that have been cultivated with a consistent fertilizer and watering regimen will survive in a garden for 20 years or longer. That is not to say that they will not live longer than that, as many orchids have been in families for 50 years or more.
Some wild orchids have been known thrive for as long as 200 years. Climate and other conditions such as hydrogen rich soil and well-lighted, wooded areas contribute to their longevity.
In your home garden, try to recreate the same kinds of conditions seen in nature to ensure long-lasting healthy orchid plants.