you all know how much I love Superthrive ... NOT ... ( hoo-doo medicine-show crap cure-all ) ... one drop per gallon for cloning purposes, and I wouldn't swear that it helps with that ... but, I HAVE killed seedlings with it :wtf: ... as my 2nd-generation nursery owner (botany degree) says " I sell LOTS of Superthrive, makes me feel like P.T. Barnum, 'sucker born every minute'... :jointsmile: