Trellis for training fruit trees (8)
I believe the answer is:
espalier
'trellis for training fruit trees' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for espalier that I've seen before include "Lattice for growing plants" , "Trellis on which shrubs are trained, like pearlies" , "train a plant" , "Climbing trellis" , "Lattice-work for tree-training" .)