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Step 1
Provide lower temperatures. High temperatures require more water content in the air to achieve the same humidity as lower temperatures. Decreasing the temperature from 70 degrees Fahrenheit to 50 degrees Fahrenheit will double the humidity in the air with the same water content.
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Step 2
Mist indoor plants in the morning with a fine mist of soft water. The evaporating water around the plant increases the humidity. Use soft water purchased at the store, rainwater, or boil tap water, let it cool down to room temperature and apply it to plants. Soft water prevents calcium deposits from building up on the leaves of the plants.
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Step 3
Place a tray of damp pebbles under the indoor plants. The pebbles should be pea size and the tray must be at least as wide as the plant. Pour water over the pebbles, keeping them moist, but avoid letting water stand under the plant. The humidity in the air around the plants increases as the water evaporates off of the pebbles.
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Step 4
Hang a dish of damp pebbles under hanging plants. Place holes in the side of the tray and attach to the hanging basket with string. Suspend the tray about 6 inches under the plant and keep the pebbles moist.
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Step 5
Group indoor plants together. Water vapor given off by the plants is captured by the other plants.
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Step 6
Run a humidifier around plants. While not always practical, a humidifier is the best way to increase humidity indoors.
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Step 7
Increase the humidity of indoor plants which must have high humidity to survive by covering them with plastic bags or the tops of plastic 2-liter bottles. Water evaporating from the plant will be trapped in the air around it.
