Dataset of dendrometer and environmental parameter measurements of two different species of the group of genera known as eucalypts in South Africa and Portugal

<i>Eucalyptus</i> plantations are a crucial global resource, offering raw materials for industries across five continents, including renewable energy sources, recyclable fibers, and eco-friendly wood products. To support sustainable management, ten wireless dendrometer and environmental sensor systems were deployed on <i>Eucalyptus</i> trees-six in Stellenbosch, South Africa, and four in Leiria, Portugal. These systems measure tree stem growth, air and soil conditions, and transmit data via LoRaWAN to a cloud-based platform (ThingSpeak), with local SD-card backups. Nine systems collect data at 6-minute intervals, while one collects at 11-minute intervals. This data is valuable for maintaining forest health and ensuring resource sustainability. EucXylo, a Research Chair funded by the Hans Merensky Legacy Foundation, focuses on the ecophysiology, growth, and wood formation in eucalypts. The dataset aids in developing models of tree growth and xylem production, offering high-resolution insights into <i>Eucalyptus</i> growth and environmental conditions.