Amazon.com : Philodendron Growing Soil Mix 3 Quarts Custom Soil Blend Potting Mix for Philodendron Plants Specially Developed by and for Professional Nursery Growers Nutrient Rich Formula : Patio, Lawn & Garden Philodendron billietiae x atabapoense 'Black' is a supposed hybrid of Philodendron billietiae and Philodendron atabapoense. The leaves have the undulating leaf margins like Philodendron billietiae and the maroon underside of the leaf Monstera Peru General Care Guide Philodendron or Alocasia? in the Plant ID forum Garden.org How to Tell if Your Houseplant is Stressed Platt Hill Nursery