Well, more questions from the same buyer along the same lines.
How long do semps need cold (and how much cold) in order to make their best Spring colors? Or is it more a matter of footcandles of sunlight? I'm embarrassingly weak on the nuts and bolts of this sort of technical botanical knowledge.
He's interested in having me send frozen semps in December (they will freeze here during November - well before he wants them shipped. I need to know if they will color properly after only being chilled for a month.
Thanks in advance.
