problem identification

As the title says, what happen with my water jasmine. I already tried to give it fertilizer (16-16-16 + tiny amount of iron micr via foliar spray.

So mid autumn I wired up my first trees. Two junipers that I bought at a nursery. They then spent most of the winter ranging from -3 to -22 Celcius buried under snow on my apartments balcony as I protected them from the wind as best as possible One juniper I wired 3/4 branches, the other I...