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There is no true blue blooming rose available that I know of, even though research continues to create one. They thought they had one in Japan but it proved to be weak and sickly. There are rosebushes that have Blue in their name but the blooms are more lavender than blue. If your rosebush is a grafted rose, it could be that the rosebush you bought it for has died and now the root stock is sending up shoots and taking over. There are some Hydrangeas that you can do this with but not roses.

Sounds like you could have both a bug or worm problem and perhaps powdery mildew. Spraying the rosebushes with a product called Green Cure will handle the powdery mildew. Inspect the underside of the rose leaves and see if you find the culprits hiding there. They may also only be visible at night with a flashlight as many such pests like to emerge and feed by the cool of the evening. Then spray with an insecticide of choice as needed.

Hi Brian
Looks like the handywork of either a beetle or caterpillar/slug/worm. If you check underneath the leaves you may find the culprit hiding there. You may not be able to catch them until night time if you check the rosebush with a flashlight as many such pests feed after dark. Spraying the rosebush with a systemic type insecticide or some systemic granules should take care of the problem. If you spray the bush be sure to spray the soils surface too as some pests like to hide just under the soils surface and emerge at night climbing up the bush to feed.

Pine straw makes for a good all season mulch for the roses. If you have it, use it as it is one of the better ones to use.

Since it is late in the season, I would plant it in a good sized pot with drainage. Keep it inside until early Spring once danger of frost has past, then sit it outside in the pot for several days more hours outside each time. Then plant it where you want her to grow.

This is just a natural growth habit for some rosebushes and there really is nothing one can do to stimulate foliage growth on the canes. Many roses will drop some foliage during the hotter times of the year leaving them leggy. That foliage will usually return once the weather cools again. You might want to consider doing some low growing companion plantings that flower well and add nice color to the lower areas of the leggy rosebushes. Such as some nice Drift Roses, which are a cross between ground cover roses and miniature roses. Or perhaps some Dianthus such as one named Firewitch, as she has wonderful color and fragrance.