can you post a photo please?

looks like the dreaded japanese knotweed. I have it in a neighbouring garden and unfortunately it's very difficult to get rid of.

Thanks for that info. It is a very vigorous plant and I thought I'd be doing a good thing to propagate it, just to attract bees but if it is Japanese knotweed, that might not be a good thing to do in the garden. I could always plant it around the edge of our huge school field ' for the sake of the bees'

I would think very carefully about planting it on the school border as this will spread into the school field which could lead to problems with the authorities, the other thing to remember is it is a property risk and if you try and sell your house then it will be very difficult, if you are buying a house that has knotweed then a mortgage will not be given, so many legal complications to think about? It likes to spread with those underground rhizomes and is very difficult to eradicate, professional advice is recommended for removal, if it’s a small area at moment then you can do it yourself, I have done this in the past by cutting those hollow stems down to three or so inches to ground level and trickle in some glyphosate and repeat and dig out any new regrow this over time it will be eradicated, on your side at least but if it’s going into the school field then it will keep finding it’s way back into your garden as well as neighbours so careful consideration is needed.

It is actually illegal to propagate, plant, transplant or encourage Japanes Knotweed and you should burn your samples or hand them over to the operator at the local council waste disposal centre.

under no circumstances plant it out. you will be breaking the law. our local council is coming down hard on gardeners who put it in their compost and household waste bins.

the local tip should be able to take it for you.
welcome to GoY.

https://www.gov.uk/guidance/prevent-japanese-knotweed-from-spreading

The sap once on the skin and exposed to the sun will give a nasty burn.