David, these plants are not nearly as fussy as the books lead you to believe. I have been growing them for about 40 years and I really don't do anything special.
Elaine, you should try some in the ground. This poor thing lived through 2 of the worst winters in history here; the picture was taken last April. The leaves are shorter than normal this year but if unless we have another wicked winter it will be fine. The potted plant stays out on my front porch and was only covered on the coldest nights. I bring it in when it is blooming so we can appreciate the pretty flowers. The last picture is a friend's. It has been in that pot for years and he does not do anything special either.
