Well Done Moti :) id Pot it up & Pop into Cold Frame without any Trimming :)

I would keep it indoors for a bit longer then move it as perhaps repotting and moving outside might be too much at once? Its very cold here again and snowing.

Congratulations, Motinot, I don't do very well with root cuttings. I would pot this up and keep it just a little bit warm for the moment. Start to harden it off as the weather warms. Don't cut the foliage but plant it deep so that about half of the white stem is buried.

Ok...thanks to everyone...:>)

if you ever try to dig one out you always end up with hundreds of root cuttings :o)

well done on this one. I'd pot it up but keep it where it has been for about a month then move to a cold frame etc.

Yes I've dug one up and now have many! The roots do go down along way...

Its best to plant these up but not in a large pot as this will just hold moisture and rot, but a large celled seed tray insert (the ones that fit into a standard plastic tray with cells about 2/2.5inch square/round) give them a bit of warmth as Bulbaholic says, BUT leave them completely alone for this year until spring 2011!
The cutting above is growing from the original root and this hasn't developed any roots of its own yet to continue growth.
Don't overwater it and have some patience and let them be for a year!

Try not to disturb cutting either as the new roots that will appear will be very fragile.
Next spring (2011) you will have a well rooted little cutting that will of filled it's pot and then this can be planted up into a larger pot.

I do the same with Acanthus. They put a huge amount of growth on and as tempting as it is to remove them, they are best left alone.

Lots of good advice....thank you Sbg and Nicky........:>)