text: This type of effluent field system may not have been considered in the past because no other plant has all the attributes of Vetiver.
  The amount of Vetiver grass required depends on how you intend to use the vetiver field. Vetivers processing speed slows to approximately half (like many other plants) in the winter. This is accounted for when planning the size of the field. Plant numbers are loosely based on 20 to 30 plants per head of milking stock.