Plant teen got from ground (6-2-3)
I believe the answer is:
forget-me-not
'plant' is the definition.
(forget-me-not is a kind of plant)
'teen got from ground' is the wordplay.
'ground' indicates an anagram (grind the letters ).
'teen'+'got'+'from'='teengotfrom'
'teengotfrom' is an anagram of 'FORGET-ME-NOT'.
(Other definitions for forget-me-not that I've seen before include "Blue-flowered plant" , "Plant of the borage family, usually with bright blue flowers" , "Plant with small blue flowers" , "Myosotis" , "Small blue flower" .)