How to Care for Intermediate-Growing Orchids

Intermediate-growing orchids, including cattleyas, dendrobiums, many oncidiums and some paphiopedilum, prefer nighttime temperatures between 55 and 60 degrees F and daytime temperatures between 65 and 80 degrees F. Here's how to keep them healthy and beautiful.

Instructions

Difficulty: Moderately Easy

Things You’ll Need:

• Gravel
• Misting Spray Bottles
• Hygrometers
• Orchid Fertilizers
• Plant Light
• Plants

1. Give orchids a humid environment - they require between 30 and 40 percent humidity. Bathrooms and kitchens are usually good, humid environments.
2. Increase humidity in the environment by setting the orchid pot on a tray filled with gravel and water; this helps raise the humidity around the plant.
3. Give orchids bright but not direct light. Place the pots on a shelf by an east- or south-facing window or under a skylight.
4. Grow orchids under a wide-spectrum fluorescent light if you don't have enough light from windows.
5. Spray the orchids with a fine mist of water daily.
6. Water orchids that are in pots less than 8 inches in diameter twice a week. Water orchids in pots bigger than 8 inches once a week.
7. Fertilize weekly using half the recommended amount of specially designed orchid fertilizer.
8. Repot orchids approximately every two years (see "How to Repot Orchids," under Related eHows).

Tips & Warnings

• Use a device called a hygrometer to measure humidity.

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