Severe Gardenia growth and bloom problem
I am having so much trouble nurturing my gardenia! I bought it about last summer from RONA, and since then the plant's state has been worsening. I have been trying all I can to improve the plant's state nonetheless I have been rewarded with no success. During the winter period (where temps. reach up to -40.0 C) I had brought it inside the house and subsequently observed less blooming and stunted growth. In spring the remaining foliage turned pale green, not mention that there wasn't a single bloom because the buds fell right off. I assumed maybe, lack of sunlight was the culprit for all of these problems. After the last sign of frost in spring I returned the plant outside where I thought it might help it improve, but on the contrary it did not. I came to the conclusion then perhaps the soil was not acidic since our water (in Edmonton) is hard water. Therefore I attempted using a solution of aluminium sulphate to acidify the soil. When this did not work I switched to watering it with soft water. Even after doing these it did not help my gardenia. Ofcourse then I thought maybe the soil mixture was not adequate, so I repotted it with a miracle-gro, garden soil and mulch mixture. I also made sure to add a generous amount of epson salt, covering the base with corn meal and the top with more mulch for maximum moisture absorption. Few days after to my surprise I saw new growth, however the pale green-yellow and falling off flower buds were not yet eliminated. Currently there is still new growth but there are new added problems. In addition to the pale foliage and no blooms, the spindly branches, some new leaves and buds are turning dry, brown and crispy-like and also cobwebs are appearing. They seem scorched as if they are burnt. I have pruned off the infected areas hoping it would resolve the disease but it didn't. I heard that Neem oil may help however the product is not recommended on gardenias. What to do next!?! The pale green-yellow foliage, no blooms and scorched branch, buds and leaves still remain unsolved. Is it because maybe my gardenia is lacking adequate sunlight,local temperatures are unsuitable for it or is it that I am doing something wrong. Can someone please advise me with the necessary precautions I must take to save my seemingly dying plant. I'll be happy to supply pictures of my gardenia.