To prevent mold, keep houseplant leaves dry

Household plants can be a natural and efficient way to purify the air inside your home. But if your plants get sick — developing white or black mold spores on the outside of the leaves, for instance — they can actually contribute to an unhealthy air environment.

For sturdy plants, wipe down the leaves with a damp microfiber towel to pick up the mold spores; wash the microfiber cloth in hot water to…