Treezy provides a library of customizable tree presets alongside a dedicated add-on interface for placement and modification. The toolset includes a particle distribution system with curve falloffs and random noise, a growth modifier with apical falloff for creating diverse variants, and a branch welding modifier that creates seamless texture transitions between branches. Users can browse the catalog by category and season, placing trees directly into the scene.

Materials are customizable from the UI, allowing changes to color, translucency, procedural leaf aging, and snow accumulation. Geometry Nodes-powered procedural wind animation is included, along with tools for drawing lines to prune branches and adjusting growth patterns. The system also supports randomizing transforms, scattering custom particles, and converting dynamic particles into static meshes for optimization.