Vineyard Row Mulchers WHATCOM MANUFACTURING, INC. Vineyard models are Narrow Row capable. Narrow' row centers are not a problem anymore with a Whatcom Mulch Spreader. Let us know your row spacing and we can build a machine to fit! The QUICK CHANGE QC models feature a easily removable discharge for a machine that adapts to your needs. NARROW ROW MULCHERS Click Here VINEYARD ROW MULCHERS Click Here