Climate change affects the seasonality of plant growth. Earlier green-up of forest trees in spring is a well known consequence of global warming, causing the counterintuoutv phenomenon of more (late spring) frost damage in a warmer world. Autumn phenology and, more generally, dormancy induction and release, are also driven by climatic cues and therefore affected by climate change. Surprising effects such as later spring green-up after warm autumns occur. Below-ground growth dynamics across seasons is a topic with consequences for biogechemical cycles and feedbacks to the climate systems, but not well understood at all. It is commonly assumed that belowground plant growth dynmaics mirror above-ground patterns, but I will present examples from various ecosystems that question this assumption.