The leaf buds and terminal buds are resinous
----- Original Message ----- 
From: "randy oliver" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, January 18, 2009 3:40 PM
Subject: Re: [BEE-L] Nosema and Propolis


> >
>> >I do not understand how the propolis comes from the buds.
>
>
> Trees use antimicrobial resins to protect new leaf buds, and any wounds in
> the bark.  Bees simply coop the plant defenses.  I haven't observed 
> populus
> trees in the fall when bees are gathering propolis, but would GUESS that 
> it
> would be at wounds.
>
> Randy Oliver
>
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