Answer: Annuals usually won't winter over. Their lifecycle is that they grow, flower, produce seeds and then die. If you prune off the flowers before they set seeds they will usually flower a second time but after the second flush of flowers they will die. You can collect seeds from your annuals and plant them indoors and they will grow for you and might even flower. But one season is about all they can be expected to last. You'll need to plant fresh seeds or fresh annuals out in your garden next spring. When the first frost of the season kills the leaves on your rose bush and the canes are dormant you can prune them back and then cover over the rose with mulch or other protective material. I make cylinders out of chicken wire to set over my rose bushes and then fill them with shredded leaves. This insulates the roses against the winter cold. Best wishes with your garden!
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