Decades ago we had a little house in Norwalk, Connecticut. I had a couple of fluorescent light units in the basement for growing plants. They were behind a knotty pine board false wall for the finished part of the basement, in the space between the wall and the foundation. In summer, when the cyclamen were dormant, I would turn the lights off. And take a look sometime in August or early September and there would be pale little shoots, somewhat etiolated, questing for light. Now these plants were dry, no light either natural or artificial, and I would think that the temperature in such a below grade setting was relatively uniform. Puzzling, and perhaps even a little scary. How did they know when to wake up? Judy