OrchidsAmore.com Logo

Culture of Orchids


Light levels are very important to Orchids.

Inadequate light levels and the Orchids will not flower. Too much light resulting in heat buildup on the leaves will kill the chlorophyll in the leaves resulting in a white to brown ‘burn’ mark. Burn will seldom kill an Orchid but it is unsightly. If you begin to see a burn pattern move it to an area with less light.

The more northerly you live in the World the less intent is the light. In most parts of the United States noon sun without shade in July will measure around 10-11,000 foot candles. During the winter when the earth shifts and we are further from the sun, the light will be considerably less. In Florida, December noon sun will seldom exceed 5000 foot candles. All Orchids can grow in less than the recommended amount of light.

The recommendations are for the light level necessary to initiate flowering. Especially with seedlings, less light is preferred until the Orchid is flowering size.

Family                         Foot candles
Cattleya                                    3500
Dendrobiums                      2500-4500
Nobile Dendrobium            6000-8000 will flower as low as 3000
Oncidiums                           2000-2500
Phalaenopsis                          1500   mounted Phalaenopsis 3-4000
Paphiopedilum                         900
Zygopedilum                       2500-3000
Vanda                                      8000
Grammatophyllum              3000-6000

The main reason an Orchid fails to flower is inadequate light.

Fertilizers  The Basics Potting Mediums  -  Water  -    Light  -  Temperature   -  Blooming   -  Repotting