Q.Gardenia as Houseplant
I have had my potted gardenia for more than 3 years. It blooms profusely. I have repotted it twice, but it has outgrown its pot again and requires three times a week watering. I put it in the bathtub and give it a shower when I water. I feed it weekly with half strength fertilizer. The problem is that if I go to the next larger pot, I will not be able to lift it. It lives on my dining room table in a two story, south-facing bay window. It is very happy and has more than forty buds/blooms on it right now. It is a gorgeous plant. It is in an 8 inch (inside) diameter pot. The plant is three feet wide and two feet tall from the soil. Can I prune it so it can stay in the current pot? Should I root prune it also? When should this be done? I don’t believe it is hardy in my area (winter lows in the low teens) and besides, I like having it inside.

Certified GKH Gardening Expert
If you want to keep it in its current pot, then yes, it will need to be pruned and root pruned. This will keep it a manageable size.