The article introduces a new way to predict how much biomass can be harvested from fast-growing basket willow plants. Researchers studied the size and number of willow shoots on experimental plots to create a model that accurately estimates plant mass. By using statistical distributions to describe shoot size and plant structure, the model can predict biomass variations based on observing just a few shoots. The model closely matched real-world data, showing it can be a useful tool for estimating biomass in willow plantations.