A quick overview of why plants can benefit from a cold snap. It’s kind of like a board game where the aim is to accumulate degree days. So one degree day is one day spent below a given temperature which varies from plant to plant. 1 day at 6 degrees below is worth 3 days at 2 degrees below. When the critical number is reached then the plants will move onto the next phase in the cycle. This tends to be a feature of long day plants.