TomM wrote:I have no answers for the salvation of your dead, dying, or diseased tree but my question is "Who is selling all these junipers and promoting them as INDOOR BONSAI?" which they are not?
I think it's a lot of dealers who are out to make a quick buck. Stick a cutting in a cute pot, glue some nice looking gravel and a big rock on top to keep it from spilling during shipping and tell people it will grow right on their desk where they can look at it. It just happens that junipers are the prototypical bonsai tree.
Anooshey, if you are still interested in bonsai know that there are several trees that will grow happily in a dorm. Ficus or schefflera are almost bulletproof choices, ficus really only requires that you don't move it around too much and don't let it get cold or sit in a draft. They are both tropical species, so they will tolerate being overwatered as well. Shefflera needs to be trained in the clip and grow method, but they grow really well. I believe there are a few threads on here about how to properly train one this way. Check the bonsai photo gallery first. Fukien tea is also a good indoor choice, they have interesting bark and leaves, and are pretty easy to find on a reputable bonsai site.
One other thing to mention, if you are growing in a dorm, you will need supplemental lighting. The fluorescent lights of the typical dorm are too far away and too weak to help much. To get good, strong growth you're going to want some type of lamp or other light source that can be positioned close to the plant, preferably fluorescent and not incandescent. If you live on the south or southeast side of your building you could probably get away with using the window for the warmer months, but it will probably be too cold for the winter months depending on where you are located.
Anyhow, sorry for the long post. I hope that your experience with the juniper hasn't turned you off to bonsai. Almost everyone makes big mistakes in the beginning, its just unfortunate that your tree didn't pull through. Good luck!