When is a good time to separate them from the family? And how is it
done?

A neighbor gave us 4 pups last year, they are now about 18"-24"
tall/wide/circumference, several have little 4"-6" pups, really cute but
I'd like to transplant them somewhere else.

I thought it was blue agave I had, but after googling I don't think they
are. They are the common, thick bladed, frosty blue-green type that can
grow quite large, they leave an image of the next blades thorns on the
previous blade as they grow.

Thanks

Here's hoping for snow this year! clink