Collaborative networks that involve the compilation of observations from diverse sources can provide important data, but are difficult to maintain over long periods. The International Phenological Garden (IPG) network, begun in 1959 and still functioning 60 years later, has been no exception. Here we document its history, its monitored 23 species (initially all propagated by cloning), and the locations and years of data contribution of its 131 gardens, of which 63 from 19 countries contributed data in 2021. The decision to use clones, rather than multiple, locally adapted individuals, was based on the idea that this would “control” for genetic effects, and it affects the applicability of the data and duration of the network. We also describe the overlap among the IPG network, the Pan-European Phenology network (PEP725), and the phenological data offered by the German Weather Service. Sustainable data storage and accessibility, as well as the continued monitoring of all 23 species/clones, are under discussion at the moment, as is the fate of other phenological networks, despite a politically mandatory plant-based climate-change monitoring.

涉及收集来自不同来源的观察结果的协作网络可以提供重要数据，但难以长期维护。国际物候园 (IPG) 网络始于 1959 年，60 年后仍在运作，也不例外。在这里，我们记录了它的历史、监测的 23 个物种（最初都是通过克隆繁殖）以及其 131 个花园的位置和数据贡献年份，其中来自 19 个国家的 63 个花园在 2021 年提供了数据。使用克隆而不是使用克隆的决定多个本地适应的个体基于这样的想法，即这将“控制”遗传效应，它会影响数据的适用性和网络的持续时间。我们还描述了 IPG 网络、泛欧物候网络 (PEP725)、以及德国气象局提供的物候数据。目前正在讨论可持续的数据存储和可访问性，以及对所有 23 个物种/克隆的持续监测，以及其他物候网络的命运，尽管政治上强制进行基于植物的气候变化监测。