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Re: Concentration of Gibberellin A3 (GA3)?


It depends on what you want to germinate, concentration varies from 25ppm
to 2000ppm. Avoid pro gibb it does not work well, mix solution fresh every
few weeks from crystaline GA3. 1000ppm is good for hard to germinate things
like gentians and glaucidium; less for sensitive species,too much is fatal.  
 Bob Stewart-Arrowhead Alpines


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