4 Houseplants That Clear the Air

ON THE UPSIDE

The Boskke Sky Planter is built to hang upside down from a ceiling hook and uses a reservoir system to release more water when soil is dry and less when it's wet. (Don't worry—the dirt stays put!) The result: It requires up to 80 percent less H ₂ 0 than its conventional counterparts, and needs refills as infrequently as twice a month—saving you water and time, not to mention floor space. ($25 to $75; UnicaHome.com )

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