green mulch
mulch composed of green (rather than woody) organic matter and not fully composted or decomposed. Also cut or mowed herbaceous material (grasses. etc.) that are left to decompose naturally and improve the underlying soil quality.
graft union
junction between root stock and scion Wood. Often evident by a thickening of the trunk at the union.
grafting
Method of plant propagation by attaching a bud or a scion of one plant onto another plant. forming a living union