Janet wrote:

Do you harvest it just as and when you want some, or at some particular
time of year?

Best when dormant, spring or fall, but I don't think a slight reduction in
strength would matter much.

--
Gary Woods AKA K2AHC- PGP key on request, or at home.earthlink.net/~garygarlic
Zone 5/4 in upstate New York, 1420' elevation. NY WO G