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pdxgreg

Does rooting hormone powder go bad?

pdxgreg
15 years ago

Hello,

I am preparing to take some hardwood cuttings and do some air layering in the garden. I have a container of rooting hormone powder that is 3 or 4 years old.

Does anyone know if these hormone powders lose their effectiveness over time? Is there a live culture of some sort involved in the hormones that might have "died"? I don't see any kind of "best if used before..." date on the package.

Any thoughts would be most appreciated.

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