Not a miracle product-there is no such animal.
I use it on my houseplants and for soaking cuttings and transplants. Seems to help lessen the shock. But no scientific proof of that either, lol!!

I used Superthrive several years ago, didn't notice anything too dramatic (but, to be honest I didn't use it consistently either). Last year I was in Lowe's and I noticed the display and kind of got sucked in by it's claims again, but this time I decided to experiment. I took two cuttings from a jade plant and two cuttings from a wormwood plant,I put all the cuttings in water (separately) for about an hour before planting them. I used Superthrive in the water of one jade cutting and one wormwood cutting.I then continued to water the Superthrive cuttings with Superthrive water and just plain water for the other two. The bottom line is the Superthrive jade developed roots sooner than the other jade and it also grew new leaves and branched sooner. Neither of the wormwood cuttings rooted, but, I thought it was interesting that at the begining I put all the cuttings outside (so they could get some natural light)and It got a lot hotter than I expected and by the time I brought them in both wormwood cuttings had wilted,so I watered them and after about a half hour the Superthrive cutting had completely revived, while the other cutting was still wilted. Eventually it perked up a little,but it never completely revived like the other one. Anyway, that's my two-cents worth.

Superthrive is a mix of vitamin B and a rooting hormone. Ortho has a similar product, without all the advertising hype, for a small fraction of the cost.