"Day length also has an effect on tuber production. The lengthening days of late spring and early summer produce optimal vine growth, while the shorter days of late summer favor tuber initiation and enlargement."
I'm not sure what it means for you southerners, but I'm wondering if I should keep my potatoes in the ground a little longer than I intended, to fatten them up. According to the days to maturity, they should be ready in midAugust. But if I keep them in longer . . . oh, now I'm confused. Need to read up on the equinox - or ask of 5th grader! Back to podster's Journal homepage.