Tree from resourceful architect (5)
I believe the answer is:
larch
'tree' is the definition.
(larch tree is a kind of tree)
'from resourceful architect' is the wordplay.
'from' says the answer is hidden in the clue.
'LARCH' can be found hidden inside 'resourceful architect'.
(Other definitions for larch that I've seen before include "Coniferous tree with deciduous bright green needles" , "Supplier of timber" , "wood" , "Deciduous conifer" .)