Count on Philodendron selloum to bring a tropical vibe to any setting. Wired to grow, this exotic beauty pumps out leaves without missing a beat, regardless of whether it receives bright or low light. Also known as tree philodendron, this houseplant unfurls leaves that can grow to 3 feet long. It’s on NASA’s list of best air-purifying houseplants. Place it outdoors for summer and bring it inside before fall frost.