Has anyone ever used this plant food on anything?

I tried using it with my figs last year. It's hard to say if it did anything because I did not have a control group. I used a mix of ozmacote & lime (50/50) and watered occasionally with Superthrive. I figured it couldn't hurt. Figs grew well so I guess it worked. Just hard to say it it was Superthrive that made the difference. I would use it again. Remember it is not a fertilizer, it works in a different way. I think it makes the plant more able to take up the nutrients.

i think dennis uses it during the rare rooting his trees. like other chemicals, i bought it, but never used it. i'm sure there will be time when i'm going to break that out to use.

I tried using it when up potting last year. Not sure if it made a difference.

I've never used it, but the active ingredients are a Vitamin (B1) and a Rooting Hormone (NAA). It may help root growth in some plants, but not many plants use or respond to the Hormone (NAA) and there seems to be no evidence that vitamins help plant growth.
[QUOTE]From Wikipedia,
SUPERthrive is a WARF testing lab–certified nontoxic[citation needed] liquid concentrated growth enhancer product for plants, which has been available since 1940. It contains ".09% vitamin B1, .048% 1-Napthyl acetic acid",.[1][/QUOTE]
[QUOTE]http://www.colostate.edu/Depts/CoopExt/4DMG/Garden/beware.htm
A good example is vitamin B1 (thiamine), often sold to "prevent transplant shock" and "stimulate new root growth" when planting trees, shrubs, roses and other plants.  A study in the 1930's provided the basis for such claims.   Pea roots cut off from the plant were placed in a culture medium in the laboratory.
The researchers knew that thiamine was normally found in roots, so they put thiamine in the culture medium and found that root growth did occur.  Vitamin B1 is manufactured in plant leaves and sent to the roots, but if roots are cut off and placed in a petri plate, vitamin B1 stimulates growth of the roots when it saturates the culture medium

The bottom line: While root stimulator products are not necessary for transplant success, if you do use one, make sure it contains a rooting hormone and fertilizer rather than just vitamin B1. The vitamin B1 is for marketing purposes rather than actual effect.[/QUOTE]
and Here's a Youtube trial...
https://www.youtube.com/watch?v=fR0TQaMiEuY

I use it anytime I up pot any plant. As everyone said, you really can't tell if it works or not. It is widely used in nurseries
for transplants.

SuperThrive is good to  help treat/prevent stress in plants, which is why it's often used for up-potting.  It's not a feed/fertilizer, as Pete pointed out, but vitamins & hormones.  I wouldn't use it regularly, but if you have a plant that is stressed, or you plan on stressing the plant (i.e up-potting, shipping, heavy pruning, etc.) it does appear to help.

Absent using any control groups, and showing documented, repeatable results, everything about "SUPERTHRIVE" is just speculation, and always will remain anecdotal until proven otherwise....pro, or, con.

I will admit that I'm a sucker for these magical 'elixers', soil inoculants, beneficial bacteria tonics, iron boosters, etc.  Do they help my fig trees?  Who knows.  I'm not a scientist...I'm a fig eater.  I suspect they can't do any harm if used as directed.  There are worse ways to spend money. 

When I see main-crop figs the size of my fist, I will become a true believer.  Until then......


Frank

I tried to use it last year but cannot tell if it made any difference since all my figs had grown 6-8 ft in the season. I think a good soil with mulch and compost would make a bigger difference.
So, at this point I would say that the Superthrive is a snake oil in my book and would rather spend my money on something else.