Japanese wineberry propagation

In spring 2014 I bought two Japanese Wineberry plants (online, from Kore Wild Fruit Nursery, Wales). When they arrived they were max 4cm high. In their first summer they grew about 4 metres each (a growth factor of 100 - wow!) and the canes bent over under their own weight, touched the ground and rooted at the tips (as wild brambles/briars do).

My question is: should I cut them in the middle, or just leave them alone?
I'd like to develop a thick stand of this berry, so I guess I'm asking what's the best way to get them to vegetatively reproduce?

Regards,
Paul

Southampton, UK (climate zone 9)

You can easily cut them apart! Brambles will tolerate a lot.

Would you be interested in exchanging some cuttings?

I have a tonne of rare edibles: seeds and germplasm, which I am happy to exchange.

I have one kind of wineberry, but I would like to get two more stem cuttings to cross-pollinate/increase genetic diversity.

Lynsey Nico wrote:You can easily cut them apart! Brambles will tolerate a lot.

Would you be interested in exchanging some cuttings?

I have a tonne of rare edibles: seeds and germplasm, which I am happy to exchange.

I have one kind of wineberry, but I would like to get two more stem cuttings to cross-pollinate/increase genetic diversity.

Thank Lynsey! I will do as you suggest.