Oh yeah...
Genetics...
Not sure what type of climate you live in, but humidity and rain are both issues for me. Even inside.
Indoors I like my ladies to be short and fat.
Outdoors I love em tall and... well... uh... yeah... fat.
I am on the hunt for one or more suitable for my indoor requirements, and one or more for outdoors.
My rain, humidity, and frost as early as early-mid October make me desperate for a couple quick finishers that are reputably mold resistant. I'm thinking Landraces...Afghan, Brazilian, Pakistan, Columbian... Or maybe The Church or Holland's Hope?