Pick up planting at herbaceous border pruned seven times (6)
I believe the answer is:
gather
'pick up' is the definition.
(both can mean to learn or find out something)
'planting at herbaceous border pruned seven times' is the wordplay.
'GATHER' is hidden within the letters.
But, I'm uncertain how this is indicated.
Can you help me to learn more?
(Other definitions for gather that I've seen before include "Harvest or learn by inference" , "... will proverbially do this" , "The rag (anag.)" , "make a deduction" , "From information given, learn" .)