I knew there was a Double Knockout, but I didn't know there was a Double Pink Knockout. I'll have to look for this one. Laurie

Knockouts aren't really zone 5 plants, IME. They will suffer a fair amount of dieback, and very few roses are really happy growing back from the ground. There are other roses that will perform much better in cold climates. I took this picture last week. Right now both roses are covered with flowers. The smaller, pink one on the right is Frontenac. The larger red one is Quadra. They come from near Montreal.

I'm in a cooler zone but pink Double Ko's grow to about 3.5-4ft tall and 3ft wide here... So maybe will grow larger in TX??? Hopefully someone from TX chimes in Beth... Our neighbors D. Pink Ko's are planted about 1.5ft - 2 ft apart here. 4ft high fence .....I planted our Double Red Ko's 40" apart and I have space between them but that's what I wanted...

Wow, you weren’t kidding that they looked poorly. It may be a combination of a couple of things. The canes may not have been healthy after last winter which would allow disease to take over with greater ease. The dead reddish black obviously dead parts can come off now. But what you do not want to do is getting the rose putting out new basal growth. It will not ripen before winter. It will turn black and sometimes will travel into crown. I agree with Cynthia that it appears the rose grew on winter killed wood from last season. When you prune after winter be sure to prune every cane so that you can check it’s health. Then prune until you reach clean pith (white to apple green). Sometimes I have kept one that’s light beige but when you do and you see cane die back. Then take that cane down to good wood don’t wait. When your working with diseased wood once you reach healthy wood it is a good idea to clean your pruners. Then make one last cut. I have a bucket that comes with me for pruning. It has my pruners. A bottle of Windex multisurface disinfectant. Old wash cloths and a bottle of glue to seal the cut. The glue keeps the carpenter bees from putting their babies in there. At least it gives the cane a chance. It’s also better for your pruners to spray the cloth then wipe the tools with your cloth.