Diane where are they grafted, if they are top worked then the named variety will be at the top and the stem the rootstock.......

I'd have 'rubbed' out the shoots up the standard stem personally. often the top growth is as Pamg says grafted onto a rootstock stem.

They will be bushes but unless you know what the rootstock is you may end up with briar roses.

Thank you Pam and Sb. Thats what I find hard to understand.
The shoots that keep coming out of the stems are dark red, the named variety.
It seems as though the stems are taking all the goodness which should be going up into the top growth. The shoots coming from the roots are the named variety, not wild rose leaves.
Hopefully if I cut them down they will make more shoots
and eventually be bush roses.
It may be that only specific varieties are suitable for standardising, and this grower has budded the wrong ones
to sell them.
I just dont know.

Hi Diane, it does sound odd, what happens if you are more persistent than the rose and remove shoots as they come?
I think I'd only do one tree to see what happens, I'd be inclined to cut it hard back as its evidently a really strong root.......then wait and see
See what Seaburn says too, I think.......

Thats what I have been doing Pam.
Be easier for me to have them as shrubs, which is what I should have bought in the first place.

Hope it works out for you x