I'm having the same issue with my peace lily and the white millipedes. I live in a basement apartment and the plant is thriving with the current watering regimen but the millipedes in there creep me out! My apartment doesn't get a lot of sunshine for lack of windows so the plant is in a shady area which causes the soil to stay pretty moist for a long period of time. I literally wet my plant every two week because that's when the top soil gets alittle dry. Please help! I love this plant! It's the first one that's growing so beautifully with me. I even repotted it with fresh soil and tried to get rid of all the old soil but I'm seeing the insects more at the top since I've done that.

Normally we advise plants not be divided or re-potted until they are actively growing. Your little guys I'm sure are doing splendidly and so could probably do very well if transplanted right now. I don't know if you wish to keep the three as indivuduals or wish to put them together in one larger pot but I suggest a 6" pot is sufficient to let the plants grow as they can without putting too much stress on them deriving nourishment from a bigger pot. They like bright...but not direct sunlight and can tolerate less. They like to be given frequent watering --as long they drain well and a higher humidity. Since you are undoubtedly going to change their soil when you transplant, you can buy soil that is in their pots at the present time. Called a fibrous potting mix and is widely available. Since you have them in a southern exposure and with the lower light intensity at this time, I don't think it would harm them to give a bit more direct light....due to their size though, I wouldn't give them too direct the sun. And don't let them touch the window glass...its cold out there.

I was just actually reading up about Spathiphyllums, because I went and repotted mine into a larger pot yesterday and felt like refreshing my notes on caring for them. I would also recommend Tropicbreezent's suggestion of checking the roots and soil. That's most likely the cause of whatever problems your plant is having. Does that pot it's in have adequate drainage? These plants require a soil that drains well and allows the roots to breathe. Their roots need plenty of access to fresh air. When the air supply is cut off, that's when they end up rotting. I would highly recommend checking out a website called, Exotic Rainforest. There is a section dedicated to > Caring for Spathiphyllums < This offers a wealth of accurate information about the proper care that these plants need. A couple excerpts taken from there point out some of the common problems that people have with these plants: * "It isn't excess water that kills 'Peace Lilies' in homes. The cause of their demise is almost always poor soil that is kept soggy, poor light conditions, near constant neglect, lack of nutrients and even more importantly poor soil conditions!" * "I frequently read posts on garden forums asking why a 'Peace Lily' is about to die and how to save the plant. Almost without exception the principal responses given are to slow down on the water and/or move it to an area of dimmer light. This advice is exactly the opposite of what nature provides naturally!" * "Even though Spathiphyllum can and do tolerate poor conditions does not mean they prefer them. In nature it appears they prefer medium or bright indirect to direct light as well as adequate water and food." * "If kept in very dim light you are deliberately starving the plants from the ability to produce their own natural sources of food." After you have corrected the problems with the roots and soil, I would advise you to move your plant to a brighter location with plenty of indirect sunlight. Sunlight is the plant's primary source of energy. Without it, they can't produce the food they need to grow stronger and healthier. Just because plants can tolerate low light conditions, this doesn't mean that they prefer them.

Oh, I love the sophisticated look of Peace Lilies. Although I'm not very knowledgeable on everything you mentioned, I do know that if it is cold you could try to push it through till spring to repot her, if it's still warm and it's only starting to cool up, repot her for the winter. If she has a bloom, it seems like she's really liking the care! I have my Peace Lilies in regular potting mix and I don't let them droop too much before I water them. If she has root rot, I'd pick up some fungicide, spray it on the root ball, repot her, rinse her down and give it a nice soaking and wait till the soil dries. This usually works for me, you just have to keep checking on the roots and the general look of the plant. Others will give you more experienced information, but good luck!