The disturbing developments of recent years show that our forest ecosystems are vulnerable. Especially on sandy soils, where forests are often still quite young and poor in structure and diversity. Moreover, they must deal with poor, acidic soil and problems caused by drought. As a result, these forests lack the resilience to adapt well and in time to changes. Their vitality and biodiversity are under great pressure from climate change, nitrogen deposition, desiccation, heat, wildlife pressure and insufficient variation in species, age and forest structure. More and more species are therefore struggling. These include Norway spruce and larch, and in some places also oak, beech and Scots pine. This means a dilemma for many a forest manager: what can I do, what am I going to do and how do I do it? By starting to manage climate smartly, you can contribute to making forests more resilient, so that they can continue to fulfil their valuable role in the future.