Hi Anthony, Welcome to garden.org. My condolences regarding the loss of your daughter; I know your Peace Lily plant must mean a lot to you in memory of her.
I agree with dr.dawg/Ken about the care of the plant. There are many varieties of Peace Lilies, one gets very large while others are more dwarf types. I've seen the larger types growing in shopping mall areas but smaller ones are generally sold by florists and nurseries/garden centers for the house plant trade. We have a few Peace Lilies listed in our database with photos and growing information:
http://garden.org/plants/searc...
I have a large 'Domino' Peace Lily, the one with variegated foliage that I've had for quite a few years and also a few of the more petite green leaf type. I've grown a few Peace Lilies in water alone over the years ... no soil whatsoever and they've done well, I just change the water every three to four weeks to keep it from becoming stagnant.
I must admit, I am pretty bad about watering my container plants on a regular basis and my Peace Lilies will completely flop over and flatten out when they need water but they seem to be fairly hardy plants and once watered will perk right back up. I do live in an area with lots of year-round humidity though, which helps. I have quite a few container house plants, both indoors and out but I'm lazy when it comes to remembering to fertilize so my plants rarely get fed but do just fine. I'd suggest that if you do fertilize, go with a very light solution. I always dilute by half or more what the directions on the container say.
