When to do Fall requeening?
 
I try to do it in late September-early October.  I would like to go a bit
later, but queens get hard to obtain.
 
Incidently, I like to use the "nuc" method for all requeening, but especially
in the Fall.  You get better acceptance, less risk of generating a queenless
colony when you can't do anything about it, and the benefits of two laying
queens for about 2 weeks.
 
The "nuc" requeening is discussed in this year's Brushy Mountain catalog as
"Almost Foolproof Requeening".   It's also in Sammataro's "The Beekeepers
Handbook".
 
W. G. Miller
Gaithersburg, MD