This is Luanne. Luanne is a Norfolk Island Pine that I bought from a plant nursery in Connecticut about 15 years ago. She was maybe a foot tall when I brought her home - and she was just known as "the tree." Then a couple years later I met R, who has a tendency to name just about everything that holds still - so she became Luanne.
Luanne now stands over 6 feet tall - and several folks who have come to our house (she stands just inside the front door) have commented something to the effect of "wow - you must use a lot of Miracle Gro!"
Happy to say, Miracle Gro has never been part of Luanne's diet. Instead (and in addition to occasional top-dressings of worm compost) we feed her (and all our other house plants) water from our fish tank.