The only one I have grown is Cascabel. Paper-thin walls, and for me, not productive. Not sure what environment they like. But, hot/humid and clay don't seem to be it. The plants were fine, just didn't set much fruit. Aside from the low yield I experienced, they seemed fine (used them in making chili powder along with several other peppers).

Thanks for your comments :) I have clay but not too hot/humid, I don't mind low yield as long as they are tasty! I was thinking of using mine for chili powder, so I'm glad to hear someone else does.

I know most of these aren't grown too often, that's why I was very interested in hearing how other people found them ...

I grew Chervena Chujska a few years ago in a 5 gallon pot.

According to my notes, it's a medium flesh sweet Bulgarian heirloom variety. Tapered pods 1.5 - 2 inches at the shoulder and 4 - 6 inches long that matured to a rich reddish brown colour. I got approx. 25 pods off the one plant I grew and used most for roasting. It's on my grow again list but I'm still working through my not-tried-yet seed inventory.

Bill