11 across
A
pretentious
type
rejected
one
little-grown
tree
(6)
A pretentious type rejected one little-grown tree (6)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Right, so little-grown tree at the end is your definition — a bonsai's literally a miniature cultivated tree. Now for the wordplay: "a pretentious type" gives you A SNOB, and "rejected" tells you to flip it round, turning it into BONSA. Stick "one" (I) on the end of that and you've got your answer.