I think a rose might have popped up uninvited! How do I work out if its a climber or shrub?

[RiversRun]

In the last month or so what I think is a rose has popped up in my garden in border I've re-planted over the last year. Its growing at a rate of knots (it must be four foot already), looks very healthy (a lot of the roses in my garden have a tendency to blackspot, but this seems unaffected), and was initially growing from a single stem, but has recently had some other stems appear towards the bottom. Its very thorny, and has the classic serrated edged leaves I'd associate with a rose, although the leaves are bigger than most of the other roses in my garden. Before I spend a year nurturing a weed that's masquerading as rose can anyone confirm my suspicion? And if it is a rose does anyone know how I can tell if its a climber or shrub?

I’m pretty sure that’s a bramble TBH

Looks like a bramble to me too.

That’s a bramble op.

Looks like a bramble. Don’t nurture it! (Unless you are very fond of blackberries)

Yep. Have it out while you still can.

Get it up at the roots. They are thugs and the thorns a bastard.

If you look at the leaves, they’re compound leaves, made up of several leaflets, in this case 5. In a rose, all the side leaflets are roughly the same size. In yours, two of the side leaflets are much smaller than the other two. That’s what is making it so easy for people to say, correctly, that it’s a bramble. I think you’ll find that there are prickles on the central stem at the back of each leaflet, and roses don’t have that. The stem of a rose is more woody at the base - blackberry (bramble) sacrifices strength of structure in order to cover ground more quickly. Bramble stems root at the tips if the tip touches the ground, roses don’t.

Both rose and bramble are in the same family, so not surprising you were taken in.

Thank you all so much for your advice, and for saving me wasted time nurturing an interloper! Its much appreciated!