Splitting Rhubarb Plants

[sfby]

In the winter I intend to split my 2 rhubarb plants as they're now about 5 years old - once split and re-planted do I treat them as "new" plants and leave them to grow for a year before harvesting, or are they considered established enough to use next year?

TIA

[alavahalf]

I wanted to get rid of some of mine as I dont really like it so I dug it up ... chopped the root in half with a spade. Gave half of it away and stuck the other half in the soil last winter ( was hoping I'd killed it).
All through the summer I have been giving it away to my neighbours. You will have a job to damage it, as it always seems to come back.