POPSUGAR Home Guess Who How Doesn't This Garden Grow? How Doesn't This Garden Grow? by Home 10/25/08 0 Shares Like us on Facebook Sign up for our daily newsletter > There's one thing that these plants, known as Tillandsias, don't need to grow. They require minimal maintenance, and are ideal for you black thumbs out there. Can you name the one ingredient that these plants do not need to grow? Read More TillandsiasGardensPlantsGuess Who POPSUGAR, the #1 independent media and technology company for women. Where more than 75 million women go for original, inspirational content that feeds their passions and interests. Get Inspired With Our Living Newsletter Personalize Tech Vegetarian Home Food DIY Love and Sex Sign up with facebook or By signing up, I agree to the Terms and to receive emails from POPSUGAR.