With up to 140 species in the United States, orchid is the largest flowering plant family. Orchids are most commonly found in bogs, moist woodlands, and meadows. Orchids are becoming increasingly popular and are now found in most nurseries. The fall is an important season for the orchid plant. It uses this time as a "rest period" for its future winter and spring blooms. You'll find that it is really easy to care for an orchid in the fall.
Reduce watering. As the plant begins to rest, its need for water decreases. Wait until you see the leaves wrinkle slightly before watering.
Fertilize with an orchid fertilizer rich in phosphorus. Use the fertilizer at half strength and fertilize weekly. The fertilizer will boost the bloom potential of your plant.
Allow the fertilizer and water to run out of the pot. If the pot sits in the water, the orchid could experience root rot.
Put the orchids in a location that experiences a temperature variation of 10 to 15 degrees Fahrenheit between day and night. If you are in a location where your garage stays above 50 degrees Fahrenheit in the winter, consider putting them out there each evening.
Examine the orchids for pests. Use insecticidal soap to control any mealy bugs, scale, or aphids that come in on your orchids. Always follow the directions to properly apply the product.