I am shocked and yet very surprized at myself.
I have had this same 'Philodendron' house plant here just 5 feet from me for 19 long years now.
A Church friend gave me this Philodendron plant back in September of 1988 for a house-warming party for me.

It is the most hardest Plant to accidently 'Kill' lol.
I am considered a Green-Thumb person but,,,,,, several times in the 19 years, I'v gone 10-12 days before I'd Remember to Water my Philodendron house plant again : )
Once in July of 1997, I really almost Killed my (( never say die, house plant )) Failed to Water it for almost 4 weeks.
I just Soaked my entire Philodendron plant in MIRACLE-GRO in the sink 10 inches high for
7 hours and Quickly came back to full health Green.
I truely love my 'Plant' as though it's my baby LOL. It's been through and Seen Alot in those 19 years with me.

*Once again, Is it normal for Philodendron house plants to Live for 19 years or longer ??