FRAGILITY

I'm not sure what this is. I bought it in a mixed tray of flowers in the Spring and I don't think I kept the labels. Fairly typical for me. I usually plant things where I think I would like them to be before I look to see whether thay need sun or shade.

This plant has intrigued me as in its growing a first and mucher shorter stem of flowers are a deep blue but have not yet fully opened. Then the taller main stem grew later; and when I looked out this morning, after last night's heavy rain, the white flowers had opened and looked tissue paper thin and so fragile covered in raindrops.

If I can find out what it is I'm sure I'll find room in the garden for another one.