double-flowered cherry tree; double cherry blossoms
Refers to cherry trees with blossoms that have more than five petals, typically late-blooming varieties like the Kanzan or Fugenzo. Often used for both the tree and its blossoms.
The double-flowered cherry trees in the park are in full bloom.
Double cherry blossoms bloom later than Somei Yoshino cherries.
The double cherry blossoms bloom in the park at the end of April.
I planted a double cherry tree in the garden.