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Hormone rooting powder - sell by date??
"michael adams" wrote "thesquire" wrote in message ... I have been told on good authority that the talc powder based preparations lose their effectiveness after about eight months, even if kept in a closed container and refrigerated. snippage When this question was asked on Gardeners Question Time in 2002 two of the panellists admitted they'd stopped using it years ago with they claimed, no appreciable difference. http://www.bbc.co.uk/radio4/gqt/fshe...heetsq12.shtml I can also remember reading an article by Geoffrey Smith, who mentioned trying two trays of similar cuttings, one using rooting powder as per the instructions, and one tray without. IIRC he found no appreciable difference and concluded it was a waste of money. The cynical part of me wonders if a use-by date on the container wouldn't just be a sales tactic so people will throw it out and buy more product. -- Sue |
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