MONITORING AND CONCEPT MANAGEMENT: Climate change is leading to increasingly warmer winters in optimal areas for planting high-value fruit trees. This leads to less accumulation of chilling hours in fruit trees, and therefore causes lower fruit set, uneven blossoms and loss of production. The accumulation of chilling hours is necessary during the winter dormancy period of the fruit tree. The annual chilling hour requirement depends on each crop and each variety. The Climate Box® offers microclimatic analysis of chilling hours, evaluating climatic variability over the last 20 years by microclimate. This allows for adaptation and site selection of crops/varieties that are best suited to lower accumulation of chilling hours. In case of existing plantations, duly approved and environmentally sustainable chilling hours compensators can be used, calculating the optimal date of application of compensators year by year and designing passive measures to increase the accumulation of chilling hours in microclimates that suffer from a deficit of chilling hours.