The own root roses will orginally produce small thin canes while the roots become established.
If allowed to continue to grow without pruning, the bush will get quite tall. To keep it as low as you wish, cut the tall canes back a little shorter than you want the bush to be. The cut canes will branch and fill in. You'll probably have to do this regularly.
Which Bonita do you have? There are a number of them. One gets quite tall, orange pink, another remains shorter, red, while another is a climber.

Here is a link that might be useful: Bonita on Helpmefind

I must apologize, they are Bonica, not Bonita.....here is a picture and the tag: I assume the same advice will apply. MAN I need my vacation! Coming just next week for 10 whole days....

{{gwi:251273}}

and you can see HERE what it is doing

{{gwi:251274}}

{{gwi:251275}}

I want to cut them back to round them but at the same time I do not want to cut out my blooms either....awful position to be in! LOL I will wait until I get b ack from my cruise to do to omuch to them. Maybe the blooms will be finished when I get back.

I am going to MISS a b ig part of the major bloom this year but have plenty to enjoy now and later.

I am not trying to keep it at 2 foot, that is just the height they are at now. I WILL have to keep them shorter than 5 foot, more like 3.5 to 4 even if it means regular pruning throughout the summer. I don't mind doing that. Where it is it will actually make a barrier to keep the dogs in the parking lot should they get away from thier owners as well as making it easy for clients to find us. I like being incognito as a grooming salon because I do not need the extra business, so I dont really have a sign. I use the roses as a directional tool for new clients. LOL

These random canes, if the rose was grafted, would look like rootstock suckers to me, but as they are own root that is not the problem. BTW the tag, I believe, says 2-5 foot tall as does HMF and from the looks of the established plants they are compact enough to shape well at any height. I guess we will have to wait and see. If they dont work here, I will move them in the fall to my house along my fence row at the road. They can do whatever they want to there. Get as large as they want to get. Privacy fencing with flowers sounds good to me!

Bonica can grow to a height of 2' to 5' and a width of 4' to 6. In your area I'd guess it'll normally get to the larger height and width. Let it bloom now and then cut it back, only cutting it back after each bloom cycle. You can use a hedge trimmer to make it easy. Be aware it will continue to want to grow those large long canes. You can keep it short but you can't train it to stay that way. You'll have a lot of short thin laterals if you keep it cut back

Thank you Karl. That is the information I was in need of. I have knockouts in line with this hedge, so hedge trimmers are already on site. I do not have a problem cutting the roses back. I cut dog hair and I figure roses are similar. If you cut it they grow back. May look funny for a bit, but it grows back and you do something diferent next time.

Actually they'll look good and even better when buds form and they bloom. after they bloom a short trim will keep them that way until after the next bud/bloom cycle.I trim my Knock Outs like that. You can keep them at any height you want.

Bonica is a tough rose and will take quite brutal trimming, yep, even with hedge trimmers. You have to walk a fine line between too much pruning - which will put it into overdrive (growth follows the knife as an old gardening mentor always said) and not quite enough but with Bonica, you can be experimental. Certainly expect to be able to keep it at 1m high and wide.

campanula that would be exactly what I want to do with it, so glad to hear I can accomplish it.