You can also propagate the split leaf philodendron with the layering. Philodendron selloum plant care basics a philodendron selloum that is given the right amount of light, water, humidity, and fertilizer will grow to be an enduring member of the family. Philodendron Super Atom Philodendron House Plants Plants They can be up to 4 feet long. Philodendron selloum atom care . Overwatering will cause the leaves to turn yellow. You may have heard of the philodendron super atom, which is a similar plant that can often be confused for the philodendron atom. The soil should retain moisture while draining properly to prevent overwatering and root rot. Philodendrons are a popular house plant with many different varieties. Some plants contain chemicals such as oxalates, solanine, glycosides, or alkaloid lycorine that may cause vomiting, nausea, diarrhea, swelling and redness of the mouth, throat, and lips, and trouble breathing. The philodendron atom is a relatively new species to th...