Gopher wrote:

That's a great idea! I never thought of multi-layered spuds in tubs.
Only question .... wouldn't the lowest level be ready long before the
levels above? I grow only first & second earlies and always in tubs. Any
way to increase that production by using the same amount of containers
is most welcome.

Not really - the time it takes the sprouts of a ready-chitted spud to
grow six, twelve, or even eighteen inches will make little difference to
what goes on underneath, just so long as the temperature, moisture and
nutrition suit the tubers.

The new tubers grow off the sprouts, so you should end up with a tub
full of spuds.

--
Rusty