Why does my peace lily have these dark spots? This plant was sold to me as a Picasso peace lily It had white variation in the old leaves, the leaves in the Amazon.com: Disney Pixar Monsters University Mike Wazowski Big Portrait Sweatshirt : Clothing, Shoes & Jewelry Remember, not every yellow leaf is a cause for concern. It's simply a part of the natural cycle where old leaves make way for new growth. Just look at my Philodendron Florida Philodendron Black Cherry #philodendron #plants #houseplants How to Care For a Pineapple Plant (Indoor Houseplant) Empress of Dirt