Yellow leaves are not usually related to blind growth. Pls show us a closeup picture.

Blind growth is stems that stop growing without flowering. Normal new growth is reddish or pale green. As long as the top growth is growing, there is a color contrast with the old leaves. If the stem goes blind, the top leaves will turn dark green like the older foliage and the stem will not grow any further or set buds. Often the leaves on blind growth are small and crowded. Some varieties tend naturally to produce some blind growth around the base. In other cases, stems go blind because there is something wrong with the underlying cane, such as winter damage.

Weather conditions can produce blind growth too. If a cane is growing out normally and then there is a drastic change in the weather it can cause the cane to abort growth.

Look at the leaves at the very top of the cane and look down at where they connect to the cane. If you see a nodule or bump there give it a few days and check it again. If it's growing that nodule should be bigger. If you don't see anything down in that crux then it could be a blind shoot.

i don't have a camera. i will have to see if a neighbor has one i can borrow

I'll look around tomorrow. Because our weather has been uppy-downy, we've had a fair amount of it, but I've removed most of it.

Here is a photo......

The brownish leaves are healthy new growth. Again, you should expect to find a color contrast between emerging and established leaves.

Those are still growing. On blind growth you wouldn't have those redder new shoots coming. The cane would simply end at that last set of very green leaves.