Anyone grow these in pots?

I have had a small gardenia for a few months now inside the house. I am careful to keep it away from hot and cold drafts, keep the soil moist but not soggy, fert only with acid type (Miracid at half strength) every 2 weeks or so, it gets some direct morning sun but otherwise in a bright room and the temp hangs around 65-75F. It is also near a humidifier to keep the air from getting too dry. In addition to the ferts, I also spray the leaves and soil with S.T.E.M. in the same ratio as citrus.

I am wondering when I can expect blooms? The growth seems vigorous and healthy, but after some time the leaves are showing brown and yellow spots starting from the edge and spreading in. Am I missing anything/doing anything wrong?

Gardenia leaves readily absorb nutrients through their leaves. However, your water, and more especially the fertilizers you are appling as a foliar spray, (including STEM) are high in what is called soluble salts. Each time you spray the foliage, soluble salts build up with every application. After several sprays, especially when done repeatedly, the soluble salts begin to reach toxic levels. The symptoms are brown leaf tips, and brown (burnt) leaf margins. If sprays are continued beyond this point the plant will drop its foliage. This type of damage also happens with citrus. I have seen growers who constantly washed aphids from their citrus repeatedly, every two or three days, which completely defoliate the tree (in a few cases killed the tree) from toxic levels of soluble salts. - Millet (Drill ANWR)

So I should stop spraying and getting the leaves wet for awhile at least. I have been bringing the gardenia as well as my other houseplants (including my peppers) into the shower to hose off the aphids and dust accumulation. I bet this has added to the toxicity.

Would the gardenia benefit at all from getting STEM foliar feeding, say once or twice a season, or should I forgo that altogether?
BTW, I forgot to mention that I have added Epsom salts (magnesium sulfate) to all of my plants' fert feedings. I assume that I should stop this altogether with my gardenia?

BTW, the fertilizers (Miracid, Epsom salts, etc) I use are ONLY added to the soil drench for my plants. I am careful to not let this touch any leaves. The STEM is mixed exclusively in tap water and then sprayed on leaves and occasionally the surface of the soil.

Chops, STEM applied a couple time a year could be helpful. However, if the fertilizer that you normally use already contains trace minerals, it probably would not be needed. Magnesium can be added when a deficiency shows, either as a foliar feeding or through the roots along with your fertilizer. - Millet (Dril ANWR)

Chops, I have 2 large grafted gardenias that I've had for a few years. I don't treat them any different than any other plants. In the winter my house is quite dry and one of them has to live near a heat vent, and it does no worse than the other one that lives in another room with the citrus. They get watered with RO water that I purchase in the local supermarket. I also mist them occasionally. For fertilizer, I use many different things on an irregular basis. In the summer I add aluminum sulphate, soil sulfer, and/or iron to acidify the soil. Other wise I don't do anything special.

2 years ago they got scale when they went outside and still have it.
Last fall, I found Ced-O-Flora which looks quite promising (but smells really bad) so I did not use it more than once indoors (on another plant and after one application-no more scale). Will use it this fall before bring them indoors.

They also get spider mites in the winter and loose most of their leaves and look terrible. Then they go out in summer and totally recover. Last summer 1 of them had 40 flowers at one time, and smelled so great.