New plant offer

My next door neighbour has offered me a cutting from this but I'm not sure what it is. Could someone help identify it so I can check on how to proceed?
Many thanks

 

It's Valerian, it spreads by seed, I dont think cuttings root, but might be wrong.
It can become a pest self seeding readily, but ok if you cut the dead flowers off before they form seeds.

Aparently cutting can be taken,
Valeriana officinalis | common valerian/RHS Gardening

 

Sorry but this is Centranthus ruber...also called red valerian

Very different from Valeriana officinalis.

Blinking common names causing confusion!

Valeriana officinalis common valerian - Google Search

 

Ok, think I put the wrong link up.
this is the plant I was calling Valerian
Valerian

 

Centranthus ruber...also called red valerian..pics

 

This is one I have, possibly two, seed came from the shingle at Dungeness.

 

I bought some red valerian plugs earlier this year.

 

As for how to proceed, put it in a dustbin bag, place in car, drive for minimum 50 miles, place bag in someone's dustbin, drive home. It might not succeed in following you

 

I take it you are not a fan then.

 

I grow it as I like red in the garden, but I treat it the same as aquilegia, I dead head before it can go to seed........it always succeeds though

 

It self seeds. So it can become an invader. To prevent this. Remove the flower heads before they seed. I like it.

 

I used to spend whole days trying to clear it from clients gardens!
Smelly, horrible weed!

 

I agree with Noisette, take it on a long drive. Oops no! Not allowed to at the moment.