I have used it on quite a few things, and not noticed any difference,
but it may well have helped.

"Which" did a test on it a few years ago, and rated it badly, but all
TV gardeners seem to have jumped on the band wagon, and I still can't
see any proof it works. Quess they are not paying for the stuff they
throw around
Mycorrhizal fungus, is present naturally in the soil, but has anyone
any proof it works, as oppossed to hearsay?