The DendroNetwork (Global Change Research Institute CAS) was established for biological monitoring of drought and production in forest ecosystems in the Czech Republic in 2016. It covers 98 sites and major tree species across a wide climatic gradient in the Czech Republic. In parallel with the measurement of microclimatic characteristics, the monitoring is based on the direct observation of the growth and stress response of trees in real time (i.e. dendrometer reading with online data access). To have information on trees and stand responses in the past, we also took wood core samples at each DendroNetwork site in early 2022. Within the forest4future project, we have been able to transfer off-line measurements to integrated forest drought and production monitoring in near real-time with online data access.  This unique forest network and data set could provide new insights into the dynamics of European forests. The uniqueness of the network lies not only in its scale and frequency of measurements, but above all in the rapid delivery of data to society and the entire forestry sector, thus increasing knowledge in this field.