Care of Orchids

• Humidity is the most important factor in growing orchids indoors. Relative humidity in a range of 40 to 80 percent is desirable. Fertilization is acceptable but be careful not to add too much. A water-soluble fertilizer monthly is recommended in a 30-10-10, nitrogen-potassium-phosphorus, ratio at 1/4 tsp. per gallon of water. A nighttime temperature of 65 degrees Fahrenheit to a daytime temperature of about 75 degrees Fahrenheit is an ideal indoor temperatures range for orchids. A special soilless potting mixture is recommended for orchids, generally available at garden centers or nurseries.
  
  

Dendrobium

• The blooms on the dendrobium orchid are generally lavender, white or a combination of these two colors. They form long, graceful sprays and bloom in the fall and winter months. This type of orchid prefers bright light and some direct sunlight, but not the hot midday sun. Locate these orchids in a shaded south or west window.
  
  

Phalaenopsis

• This type of orchid is also known as the moth orchid and is the most adaptable to growing indoors. The phalaenopsis require no direct sunlight and thrive under conditions such as 1,500 to 1,700 foot-candles. A bright sunny day is about 10,000 foot-candles. With blooms that form colorful, long, arching sprays that last for several months, flowering occurs in early spring or winter.
  
  

Cattleya

• This species is the most common of the orchids and is predominately used in corsages. The blooms last for up to six weeks and flower once a year either in the spring or fall. Similar to the dendrobium, the cattleya prefer a shaded south or west window with bright light.