Hello. These Pics are of 2 varieties. Long story short we had a very cold winter in Detroit last season. I think I overpruned. The first pic is a Ninety Niner that actually sent these canes up this season after producing nothing last year. The second pic is PJP2 that sent up these. Neither of these have bloomed and all cans have been long and thin. Are these suckers, and are these desired roses likely gone? Looks like I am only able to post one media item as a new user.
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I also am in the Detroit Area. It appears that the roses in question are grafted and NOT own root. Presuming that they are grafted it does look like the Bud Unions (knob where the desired variety Ninety Niner, PJP2 were grafted onto the root stock) are dead. This would indeed mean that the desired variety is no longer and that the canes currently showing are indeed suckers. Carefully dig out around the bud union and confirm that the canes are emerging from under the bud union and not out of it. Should this be the case this will confirm sucker growth and the loss of the desired rose bushes. With regard to “over pruning” – I have had roses end up with just stubs (1 to 2 inches) remaining after spring pruning following a hard winter. Let us know what you find upon further investigation and if you can get a photo of the origin of the canes that would be great too.
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Welcome to the forum Detroit Rose, as mentioned by Rose Ace, it appears that the growth below the graft are suckers. Examine the grafts closely, if there is any growth coming from the graft or below the graft. However, a sure sign you dealing with suckers are long canes that don’t bloom. The root stock is usually Dr. Huey which will bloom in the spring. Be encouraged, time to research some new roses for planting next spring.