I see them at Pikes every year. If you can't find them there, Goodness Grows has them.

Pikes! I hadn't even noticed. Doh!

I got mine from Indio Growers here in Woodstock. I thought I should give her credit.

Woody, when mine come up I can send you some if you'd like. I let mine re-seed. I normally have loads.

GGG

Love that old Lady at Indigo Growers!

girlgroupgirl! Thank you! I would love some!

I also have lots and would be glad to trade. I recently lost my white one, so if anyone has any extras, I'd love to trade for one.

Where are Pikes and Goodness Grows?
I did find both pink and white begonia grandis at Pernell Gerver's online store.
Daphne in Tacoma

Here is a link that might be useful: Pernell Gerver

Here's another online source. They say their white gets to 4 feet tall.
gardensoyvey.com

Here is a link that might be useful: Gardensovey

Pike's Nursey is a chain (mainly) in the Atlanta area and Goodness Grows is a famous nursery in the Athens, Georgia area.

Woody (and anyone else who wants some)

I also have tons (pink) in the spring. I'm in the Lilburn area. Let me know and I'll pot some up.

GAmud