My branches have bloomed it didn't take very long approx. 1 week and now I have beautiful blooms in my kitchen. You can do this with any kind of blooming trees. Cherry blossoms are my favorite because of the pink blooms but I don't have a cherry tree so I used my plum tree branches. Remember they have to be trimmed anyway so why not take advantage of forcing the blooms on the trimmed branches. There is no real technique in doing this just cut off the branch and stick them in water and wait. Easy Right!!!
Here are some photos
Here you can see the buds are beginning to bloom this was about
two days after bringing them in