I think I have heard it may be invasive. I know I dug up a white one from the field and it is very invasive. I may have to take a herbicide to it!

I have no experience with the blue one. If his is doing well, it should work for you.

I love them in the woods where they bloom both the blue and the white this time of the year, but they do self seed and when one comes up in the garden, I pull it out. I do the same to the tradescantia which blooms early spring. It can just keep to the woods where it belongs.

Thanks I will be careful.