It's huge--three feet across after about seven years. I didn't expect it to be this big this year, although I expected it to be big based on last year's growth. It started out with white edges, but they turned yellow two years ago.

Maybe "Wide Brim"? When does it bloom and what color are the flowers? That will help to narrow down what variety it is. A lot of hostas are quite similar to one another.

It blooms in early to midsummer with pale purple flowers.

Well that seems to fit Wide Brim; it's a fairly common Hosta. I have it but don't have a good pic to post. Does that name sound at all familiar? Maybe some others can chime in with some suggestions.

Okay--it does look very similar, except that I see the hosta at several different sizes all with yellow streaks. Mine had white streaks for the first five years--only last year did they turn yellow. This is the biggest of three that have been in that bed all this time, and they all did the same thing at the same time.

Do they stay yellow all season?

Yes, they do... as far as I remember... they are actually in full sun, so they get pretty tired looking by midsummer. The borders may fade to cream at that point, but I think it's from the sun.

could it be earth angel?

My QUESS is Wide Brim