On two accounts, I get a plant (6)
I believe the answer is:
acacia
'plant' is the definition.
(acacia is a kind of plant)
'on two accounts i get a' is the wordplay.
'two accounts' can mean two replacements for 'account'.
'on' means one lot of letters go next to another.
'account' becomes 'ac'.
'account' becomes 'ac'.
'get' says to put letters next to each other.
'ac'+'ac' is 'acac'.
'acac'+'i'+'a'='ACACIA'
(Other definitions for acacia that I've seen before include "Plant of the mimosa family" , "Plant such as the Australian wattle" , "Plant like wattle" , "Spiny tree of warm climates" , "Spiny tree or shrub" .)