Dear Tom,
Growing plants indoors is a good thing, but we need as many trees to keep the indoor air clean?
Steph Roblevitch, Berwyn

Dear Steph,
Homes are often tightly sealed to reduce heating and air-conditioning costs, but the downside is that indoor air can be so polluted that occups suffer from “building syndrome.” sick”. Studies to determine the air-purifying qualities of plants have been conducted and it is known that plants actually remove pollutants from indoor air. It has been found that one tree per about 100 square feet of floor space can help counteract the effects of disease building syndrome. In addition, plants can help increase the relative humidity of your home in the winter.

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