Can you specify which begonias species you mean and which species of bluebells you have? And can you show a picture of the site?

The dog bone is where the bluebells are. It’s very shady and on a sprinkler. Originally had the bed interspersed with daffodils, half and half. I overwatered the first year and lost 99% of the daffodils. I have started to re-add a few and corrected the overwatering. Not sure what type of bluebell...Spanish variety. Don’t know what variety the begonias are either but they bloom pink in late summer.

Well if both are already happy in your garden I don’t see why you shouldn’t plant them together. The bluebell bed would look much better with something growing in it.

I can’t say anything about watering because I've no experience with any kind of irrigation. But I’m surprised it would bother daffodils. They are fine with Spanish bluebells here, apart from the bluebells being space hogs.

Your Begonias are probably B grandis subsp. evansiana.

Thank you for information! I usually clean the bed Up more by weeding and mulching...then thought the begonias might be an easier answer and look good to!

Hostas would look great in that bed with the hardy begonia growing mixed in. I just personally dislike bluebells because they have reseeded throughout my gardens and I have spent years trying to remove the grass-like seedling.

I Am not sure why but my bluebells don’t tend to reseed much...but I do rack up the yellowed remains and compost them.

Maybe, I do want the hardy geraniums...would they be up before or after the bluebells, do you think?

We don’t know where you are located but in my climate G macrorrhizum is essentially evergreen albeit a bit thin in winter. So it doesn’t really ‘come up’.

Yes, they are semi evergreen here too.