What are these please?

[Knittedfairies]

I've got about a dozen of these blue flowers, about a foot tall, spindly stem and hardly any leaf. Plantsnap identified them as some sort of triteleia, but I'm not sure that's right. I definitely haven't planted them, or set seeds, so I'm hoping someone can identify them for me. Thank you.

(Even if it turns out to be a weed I'm keeping them because they're pretty)

I don't have very much in my overgrown garden, but I do have these very two flowers right now! As much as we'd like it to be, it doesn't look like agapanthus.

Enjoy your free gifts Op. The last time my Triteleia flowered was seven years ago They prefer full sun if that helps

I’ve got quite a few of these and am pretty sure they are Brodaiae

Brodie is synonymous with Triteleia.

campanula persicifolia? I can see where you're coming from, but campanula has 5 petals and is a dicot, these have 3 petals and 3 sepals (collectively called tepals because they look the same), and is a monocot, from the other side of the big plant divide.

I thought there were about a dozen of these plants; I've actually got 25!