Lin and Kurt, on the subject of using SuperThrive we had a lively debate about it over on the Orchids forum a year or so ago.
The thread "Using SuperThrive?" in
Orchids forum
At that time, I was mainly objecting to the outrageous claims they made on the label, none of which were really backed up by any research or by their ridiculous "guarantee". At least now they have modified their label and don't make so many crazy promises.
There was some research to show that using it as a fert supplement sprayed on orchids was actually detrimental. When the ingredients were finally analyzed on the MDSD it also contains (or did then) some growth hormones that are banned in at least 18 states. It was shown to be somewhat useful as a root stimulant for cuttings and transplants. Anyway, have a look if you're interested.
I don't buy it any more, myself. It's too expensive and I'd rather have a couple of new plants or a new orchid each year than spend good money on a bottle of hocus pocus. I still have part of a bottle, come to think of it. Hm. Maybe I'll use it on my colocasia pups and conduct a non-scientific experiment . . .
