• 8-16 mm is suitable for orchids and thick-rooted plants (lemon, camquat, shrub)
  • 3-8 mm is the grain size that you can use for your ornamental and saloon plants. Suitable for medium-thickness root structures. (Poinsettia, delicious monster, monstera)
  • 0-3 mm should be preferred for cactus and suculent group.