Hi Lori, If your plant was standing in water, it's probably the reason leaves are curling. I've seen it happen with other plants, just recently at Home Depot. It's a good thing you tossed out water..did it smell? How long was plant sitting in water? Does your pot have drainage holes? Monstera/Philos soil should dry before adding more water..Otherwise, they rot and grow spindly. Especially if it's sitting in a dark corner. I've read via plant books that Monsteras/Philos do well in dark areas, which I totally disagree with. On the contrary, they need light to grow, especially those w/large and/or variegated leaves. BTW, your plant is quite pretty..Toni PS, remove any mushy foliage/roots

Agreed. When the bits of organic matter in the potting soil decompose, they become smaller bits, with less air between them. This causes things to stay moist longer, and the reduced air can suffocate the roots. Roots need oxygen & moisture at the same time to function. Removing the old soil & replacing with new helps restore things to a functional situation. Not packing soil tightly around the roots can also help preserve those tiny air spaces, as well as watering very gently the first few times, so the force of the gushing water doesn't compact the soil. If the soil is airy and not packed tight, it can stay more moist without causing issues for your plant. No need to add water if still moist, but no need to let it get wilty dry to avoid "overwatering," root rot. As seasons change, a plants' moisture needs can change, so trying to prescribe a schedule can be frustrating and doesn't usually work well.

Thank you, laticauda. When I check the soil to water, it is usually very dry on top. Usually I feel through the bottom holes, too, and while it isn't "dusty dry," it is dry. What could still be happening is water retention right at the roots due to this weird soil. The bark I have in there is rather chunky like the coco coir above, and there is a fair amount of perlite, but I what I suspect is peat is the problem. There isn't much of it, but what is there just seems to just cling to the plant roots. That could be a good thing or a bad thing--I mean, the nursery used peat without issues, right? I should have sifted it all through a colander or something before I put it in, but it honestly didn't look that bad out of the package. Never buying bagged soil again, unless it's fast-draining bonsai mix. Thanks for everyone's help. Maybe the better looking plants will pull through this at least. I pulled out the one very droopy plant and the roots I trimmed weeks ago have hardly budged in growth. :(

Massey516, self heading philos are usually very large landscape aroids with thick trunks to 4 or 5 inches in diameter. The most common self header is selloum aka bipinnatifidum, they're everywhere in landscapes here in Florida. True self headers grow upright until they get too top heavy and droop over, only to try and grow upright again. They grow long, thick, straight aerial roots at a downward angle from the trunk that root in several feet away to anchor the plant against heavy winds and from tipping over. Philos like Prince of Orange are called semi-self headers, which are smaller plants with short, thick stems that produce leaves fairly thickly within a shorter length than vining types. A big semi-self header with multiple heads can grow to several feet across, usually much wider than they are tall. Other semi-self headers I can think of right now are Prince of Red, Autumn, and the gorgeous McColley's Finale with deep red new leaves. McColley's wife patented one in 1988 she called Baron but I've never seen it. I have a very large semi-self header that I collected as Big Red but is probably Week's Red Hybrid, 'wingspan' on it can be 4 or 5 feet or more. Your 'Silver' philodendron is actually Scindapsus pictus. There are a couple of forms out there, one has more silver variegation than the other. The common 'Pothos' used to be in Scindapsus but has been moved to Epipremnum. I don't think pictus was moved but could be wrong. Your Philo scandens variegata shows about as much variegation as I've seen on these. While new leaves have bright variegation, mine tend to lose it as leaves get older. Glasshouse is behind on their species names, scandens has been changed to hederaceum. Prior to scandens it was P. oxycardium, the 'name experts' keep changing it. Some experts consider your micans a variety of hederaceum rather than a species. I'm very interested in your species Philo hoffmannii, that's a new one to me. I'm pretty sure your green leaved philo with red stems is not the same as Tiffany's darker, reddish-leaved philo in her mixed pot. Besides the color difference, note that your leaves are narrower and more lance shaped. I think yours is a beautiful old hybrid called Red Emerald, like many other vining hybrid philos it has the species P. erubescens in it's genes. Jamilashaw, how does your Super Atom grow? I bought a few a couple of years ago, think I'm down to two right now. I find it very, very slow and a picky grower. I keep changing soil mix and growing conditions hoping they'll take off but haven't found what it wants yet. I've heard it's a true self header but a miniature. Russ