I bought an olive tree a few weeks ago. It had new growth and it looked healthy, although I think it was not held in direct sunlight, and when I bought it, it was standing outside - Northern temperatures (Denmark, Europe - similar to zone 7 in the States).
I primarily bought it because I thought it would be a nice plant for my orangery, so I placed it there, where it would get sunlight and warmth.
After few days, I re-potted it in a larger pot and used mediterranean soil, added some fertilizer as well.
Temperatures continued to increase, where there was a period with 25-27 degrees Celsius (77-80 F) outside, and the plant was inside, in almost direct sunlight (only shaded by the ceiling of the building, which is some sort of translucent plastic and permits light to pass). I watered regularly, though not every day for the fear of overwatering.
About 1 week later, the leaves (especially new growth) were starting to dry out. In 1 week more, most leaves dried out and some turned brown.
Today I noticed it has sprouted from the buds at the bottom of the trunk, so I was relieved it isn't dead.
However, all leaves at the top seem dead and dried. I didn't notice any sprouting in the crown. Is there any way to save the branches? Should I remove the sprouts at the bottom, or is that going to kill the tree completely?