Great advice Elaine! I thought Mike had already planted his Philo in the ground but when I saw your comment, I zoomed in and enlarged the photo and that pot does look small. I bet when the plant is removed from that container you will find it was quite root-bound. I agree that the leaves will be darker green on this Philodendron when grown in more shade. The one tree at our other house that's growing in full sun has lighter leaves than the bunch in full shade. My plants have never been fertilized in the almost 39 years we've owned the house, the leaf litter seems to be enough to keep them happy.