Different roses on the same plant

[Wyndam]

I seem to have two different types of roses growing from the same bush. Last year it only had the pink blooms but the white ones seem to have all grown from the new growth. I don't think it's grafted and I didn't really prune it too hard in the winter just gone.

Anyone know what might be going on?

The white will be the rootstock. Most roses you buy are grafted onto a rootstock, usually something tough and reliable, often something fairly close to a species rose (with single flowers). If you plant a rose too deeply (below the graft line), the rootstock starts sending up suckers, which can start to flower. Occasionally, you just get suckers because you're unlucky, too.

How very Alice in Wonderland!

Sorry, the heat is melting my brain! Why don't you think it's grafted?

I guess it's possible the white is a separate plant that's somehow grown tangled into it, but honestly, I would put money on it being grafted.

The white flowers are from the rootstock, trace them back to the base and cut off any growth from below the graft otherwise it'll take over the rosebush.

The rose was here and well established when I moved in. I didn't think it was grafted because I was looking out for a graft when I was pruning in the winter but I didn't realise all of them were. I wonder if I pruned a little too hard as all the white flowers are on the new growth.

I didn't think it was grafted because I was looking out for a graft when I was pruning in the winter

It's definitely grafted, then. Whoever planted it planted it with the graft site underground, which is why it's happily sending up new flowering growth like that. It is really common - people think the graft looks unsightly so they bury it, not realising that this is what encourages it to send up growth.

(Not absolutely all roses are grafted - my mum and I swap cuttings of roses and we never bother to graft them, but commercially available ones pretty much invariably are.)