Living proof: sometimes seeds need to fall dry before they will germinate. I had not watered this tray for a while and let it nearly dry out. Then started watering again. That’s apparently what was required to break the slumber (dormancy) of this little Mandragora officinarum seed, which germinated today. It was sown in the summer of 2015 and spent several months in the soil, where exposed to warmth and cold.