TOO add --  use a good root stimluator, consider using in seedling, and veg stages - have some very good examples of: here are a few (Great White, Orca, King Crab, Home&Gardening as a very good one (chemical) KLM rooting  compound (Dyna-Gro)  (sample pack of nutrients $15.00 (5 bottles of) or Elementral nutrients which has 3  products (sample pack $10.00) it's a myco based nutrient (recommend) their bloom boosters are rated in top 10 sitmulators (organic)    Happy Rooting !!!!!!!!!!!!!!!!!!!!!!!!!