I have noticed that the default Echeveria listing seems to have at one point included this feature, which I would like to undo in a general way. I do not know how to accomplish this.
Leaves - Good fall color
For example
Echeveria 'Black Prince'
Based on my scattered experience with a few dozen plants this is more likely to be untrue than true, among species and hybrids. There may be some special cases where cold is a factor, but most of the good color that comes in fall with Echeverias has to do with the flowers, and those only for the particular plants which flower in late summer-fall (which would include the black plant in the listing above). The Echeverias which have leaves that color up tend to max out in late spring-summer when the light is strongest, and actually start turning a visibly greener color (here) in the fall.
I have been undoing this check box where I see it in particular cases, but now that I realize it's a general thing, I'm hoping there's a general solution. Anyone know what can be done?