The message
from "Alan Holmes" contains these words:

I've dug out some rhubarb which was not in a very convenient position, cut
the
roots in half, put them in the freezer for a couple of days, now have a
better
position to replant them.

You should discard the middle and use the sattelite growth.

How do I tell which is up?

A couple of the roots have nothing to indicate which side they are going to
grow from.

Does it matter if they get put in upside down?

Your loss is the Antibodes' gain.

--
Rusty Hinge
horrid·squeak&zetnet·co·uk
http://www.users.zetnet.co.uk/hi-fi/tqt.htm