Good grief, Dora, that's a lot of work! I'm too lazy to grow dahlias or gladiolas because they have to be pulled up and thrown in a box each winter, but what you have to do is over the top!
Where I am in south-central Kansas, St. Patrick is a fairly tender rose. I know people who grow it in a pot and bring that pot into their garage each winter. If I know a rose is a tender one, I will mulch it heavily in the winter, but that's all. (I don't grow St. Patrick) If it makes it, great. If not, I learned something, and I have an opportunity to buy a new rose for that spot.
Potting and un-potting is too much work for me. I plant them well, water them, prune them if they need it, and maybe mulch in the winter. That's it. No spraying, no babying. I have over 300 roses and lots of other plants and I work full time, so that's all the care they get, and I think they look great. Especially considering our harsh climate out here.
