Problem with rose bush
by Kristie
(Hahira, GA)
Doug says that "small seashells" sounds suspiciously like snails. And they'd be eating the leaves and having a good time doing so. You can knock them off with a very strong jet of water. The dead cane on planting is likely transplant shock or trauma from being moved or windblown (cracked the stem) and it happens.
Roses in pots require specialized car and feeding and there are articles on this page.
Roses in the ground love to be pampered and fed with compost and fish emulsion fertilizer.
Seeing as how it is fall and we're looking to harden off the plants now, (no feeding) I wouldn't be overly concerned about the plant. Let it overwinter in the ground and then start regular care and feeding (see articles on the rose pages) next spring when it starts to regrow.