Orchids can be grown very easily in Colorado. Our sunny climate
averages more than 300 days of sunshine per year. But remember our light levels are very high and can easily burn plants. We also
suffer from very low humidity and increasing the humidity level will
help you to grow healthy plants.
Many orchids bloom during the winter months which is particularly
gratifying while outdoor plants are dormant and the weather is cold.
LIGHT - A south or east window is ideal for most types of orchids.
Direct sunlight on leaves should be avoided in most cases.
Fluorescent lights work very well with leaves 3 to 6 inches from the
tubes. In a greenhouse, light levels need to be reduced to about
50%. The leaves of most orchids should be a medium green color.
Yellow-green leaves may indicate excessive light. Leaves that are a
very dark green, thin and brittle are not receiving enough light.
WATER - Since most orchids do not grow in soil but instead are
potted in a very porous mix, a thorough wetting of the roots is
crucial. Water plants generously but NEVER allow the plants to
stand in water. Most types should become almost dry before watering
again. This may require several days to a week depending upon
conditions. An easy way to determine when a plant requires water is
by its weight. If the plant feels light it may be time to water.
HUMIDITY - Suggested levels fall in the 40% to 60% range. Grouping
plants together is one of the easiest ways to increase humidity
levels around your plants. Humidifiers are also used frequently
especially during our cold dry winter months. Extra watering will
not compensate for low humidity.
TEMPERATURE - Orchids for the most part do well with the same
temperatures that are normally found in the home. If temperatures
are high, maintain extra air circulation to help cool leaves. As a
general rule the temperature range for most orchids is between 50
and 90°. There are a few types that will not initiate flower buds
unless nighttime temperatures are allowed to fall to 50° or below.
FERTILIZER - Orchids are not heavy feeders and their roots burn
easily. Many orchids are potted in a bark mix which will require a
high nitrogen fertilizer such as 30-10-10.
Orchids can be very rewarding with some types that have flowers
lasting many months. They are no more difficult to grow than most
other house plants once you learn their cultural requirements.
