Willow water--yes I have read of it, and quoted that in my still unfinished huge 2nd Edition of Primer. Willow branch is soaked in water, and that water used to help some cutting root faster. I think I must have read of it first in Organic Gardening magazine. Anyway, you should ask Rodale Press, OG magazine, editor Mike McGrath, address just the simple: Emmaus, PA 18098 B. Rateaver