Answer my plant questions please?

I've included a link to photobucket with pictures of some of my plants. If you have any info to improve them then I would appreciate it. My peace lily is browning around some of the leaves. My orchid that i've had since october doesn't look like it has grown any. One of the leaves is yellow on the very tip. My spider plant I think is doing okay. I've had it for a few weeks now and it may not have rooted yet. The other photos are of chestnut oak acorns I planted. Some seem to have rooted and others not, but the one in the picture has some kind of mold or fungus I want to get rid of. It's grey and looks like a bunch of tiny mishapen balls all stacked up. It looks like it could be moss or lichen, but I have no idea. None of the others are afflicted and I want to keep it that way. Any info will help. Thank you.

Answer my plant questions please?
Well, alot of questions, let's begin.





As for the acorns... why? The germinate so haphazardly, and indoors, they aren't going to survive very long. They will need to be planted outdoors. I'm not sure if there are any 'germination' requirements that are needed. Such as scarification of the shell (chemical or physical weakening of the seed coat/ shell) or vernilization (weather requirements, such as 4 months of cold treatment). It's nice to try, but the expectation should be kept low...





The Peace Lily (Spathephyllum) looks, in the picture, alright. If they get too much sun, they sometimes yellow. They will also yellow if they are watered with chlorinated (tap) water. I also agree it could be related to humidity. Fill your watering can, and allow it to sit out for 24hours, Cholorine evaporates that way. Get a deep saucer, fill it with pea stone, then again with water. Set the plant pot on the stone. The water around the stones will evaporate and increase the humidity around the plant. That might help.





As for the spider plant (Chlorophytum comosum), it's in a way too big pot, for the plant. It really needs to be in a 4" or so plant pot. It'll never do well in such a large pot, initially.





The orchid... well. Orchids generally grow slowly anyhow. So you might not see any growth. I think that plant is in the same category as the Peace Lily. I would add that this plant could also be over watered as well. Orchids like to dry out between waterings, if they are kept too moist, the tips will yellow.





I hope that this helps!


Good luck-
Reply:How long have they been in their pots?





If it's been longer than a year, they may be getting rootbound and in need of a bigger pot. Select a pot that's about 2-3 inches bigger in diameter than the current one and give them a new home with more room for their roots to grow.





If the roots have become tightly balled, it's a good idea to tease them apart a little or take a knife and gently score them (but not too much).





Then give them a good drink with a soluble fertilizer.





For the one with a fungus, I'm not sure what it might be, but there are powders for plant fungus that you could try...go to your local garden center and look for a powder or spray that targets fungal diseases, or ask someone there (maybe bring the picture with you). Keep the plant away from the others so it doesn't spread. Good luck!
Reply:i dont know about the other plans but the orchid do not like a lot of water let it dry out on a sunny widow sill then soak fortnightly and let it drain
Reply:hiya joelthe lilly might have been burned by th sun! not know that much about plants all i know is that they need to photosynthesis so the green in the leave helps the plants to grow some need little sun others need more,the only advice i can give you is to get a good gardening book and houseplant book
Reply:The orchid and peace lily both might have the same problem if the air is too dry. They like a lot of humidity. Browning leaves are the result of low humidity. If you water them with tap water, the water might be too alkaline, and that could also cause the leave to turn brown.





I wonder if the acorns are suffering from a saprophytic fungus. They would look like little tiny mushroomy things. The photo does not give much detail in close up.