The Virtual Plant Lab (VPL) is a collection of software packages in the Julia programming language with the aim of developing, simulating and visualizing functional-structural plant models. All the packages in VPL are written 100% in Julia with an MIT license (i.e., do as you wish with the code) and designed to be extensible by others. Feel free to ask any questions here regarding any of the packages in VPL or Julia programming in general.