^ hours? they will do fine, infact the shade will tned to make them taller.
I have seen some fine Dahlias in dapled sun, to near shade. You get less flowers but the tall lanky plants will stand out nicely. Be sure to stake them.

Dont know about Bishop's Children, 'cept I did a google image search and here you are..
{{gwi:646013}}

I grew 1/2 pack of these and I love them. The tallest is 38" & they don't need to be staked.

The Monarchs adore them, which was a surprise because I have never seen Dahlias on any nectar lists.

I don't have any pictures, but I would say the photo above is close, yet not accurate. About 30% had the dark eye and about 50% had the dark foliage, and mine were 100% single flowers. No semidoubles like the photo. I did't get any solid yellow (didn't want 'em anyway).

I probably should have sown the whole pack of 100 and then culled all the green ones when they were babies, but I didn't.

Some of these were so pretty that I am going to overwinter the tubers.

6 hours of sun is more than enough. I am growing mine in about 4 hours and they're fine.

Lime

Anyone have a source for the seeds? All I seem to find available are plants and I want seed instead.

Thanks
Linda

I haven't had Bishops Children but have grown Bishop of Llandaff and Bishop of York in part sun/shade nd they were about 4-5 ft tall and just fabulous. No wonder Llandaff is one of the most popular dahlias of all time.

here are 2 seed companies that have it - just have to google
Dianes http://www.dianeseeds.com/Index.html

Thomson Morgan
http://seeds.thompson-morgan.com/us/en/product/7035/1

heres's Llandaff and York grown in containers on the deck
{{gwi:237447}}

{{gwi:646017}}

I made a mistake in saying mine grow in 4 hours of sun. I should have said "they get afternoon shade from at least 2:00 on. I think it's closer to 6 hours of sun.

Lime