Hej hej!
Kungsträdgården is probably one of the most famous 
spots in Stockholm during spring since cherry blossom trees have their season and they start to blossom. I do not have any comparison with previous years, but I felt that this year they started to blossom later than usually. This year it has started around 24th of April and it still lasts until these days. Of course, you can find crowds of people close by, so that it is better to avoid going there in rush hours. However, it is really nice to walk underneath blossoming cherry blossom trees and get the feeling of spring and warmer days.
Finally it seems that spring is really here 🙂
Hejdå, Denisa