Individual in area brought up Heather (5)
I believe the answer is:
erica
'heather' is the definition.
(the plant genus Erica includes heather plants)
'individual in area brought up' is the wordplay.
'individual' becomes 'i' (Roman numeral for one).
'in' indicates putting letters inside.
'area' becomes 'acre' (I've seen this before).
'brought up' says the letters should be written in reverse (down clues only).
'i' put within 'acre' is 'acire'.
'acire' reversed gives 'ERICA'.
(Other definitions for erica that I've seen before include "growing up on the moors" , "Shrubs" , "Woman" , "Heather's Latin name?" , "Girl - heather" .)