I have a Holly Hock, which volunteered, and a balloon flower that I planted thinking the seedling was something else. What it the best way to relocate them in my garden, and can I do it now, or is it best to wait until spring? The Holly Hock was such a surprise, it just sprouted in September and is blooming now! I had them in a container last summer [ 2011] I know that they aren't actually perennials, but since they do re-seed...
Balloon flowers are almost impossible to transplant unless it is in a container. It has a root like a carrot, and unless you get it intact you will kill it.
Now, I found some balloon flower seedlings near my old plants, and since they were very small I was able to reach entirely under them with a trowel and get them out. And if your is in a container you can easily transplant them. But if they are even three inches tall it is too late to move them.
I transplanted 4 balloon plants just a couple of weeks ago, when logic would tell me that it was way too hot. I did, however, take plenty of soil and the rootball was intact. I suppose that is some advantage of having hard clay soil. (Even though I amend it a lot...) Anyway, they are thriving and did not even wilt.
Well I guess I'll give it a try with the balloon flower. It is too small to be seen where it is now, and I have been able to collect some seed from it to plant in the new location also, so hopefully one or more of them will survive! I want to move them to where my blue balloon flowers are currently. They have done very well, see the pictures.