Trenching tool (3)
'trenching tool' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for hoe that I've seen before include "Attend to beds" , "Garden implement" , "Purple gem" , "Tool; promontory" , "Tool for loosening soil and scraping up weeds" .)
(Other definitions for spade that I've seen before include "that has a cutting edge" , "Shovel-like tool" , "one of thirteen?" , "home in Kent" , "Jack or one of a dozen others" .)