Their friendship began to 'blossom' [='bloom', 'flower', 'flourish'] during the summer.
The trees have finished 'blossoming'. [='blooming', 'flowering']
Their business seemed to 'blossom' [='take off'] overnight.
(..) and other survival food they can always descend to lower warmer altitudes and not return there till spring. As the snows retreat trees come into bloom. Cherry blossom. Rhododendrons - here in their natural home they form great forests and fill the landscape with the covers of a new season. (..)2006 TvShow: Planet Earth Title: Mountains Season: 1 Episode 2