Creating High-Resolution Custom Trees Using SpeedTree with Jean-Michel Bihorel

Throughout the workshop, Jean-Michel shares how to create a mixture of hand-drawn branches extended by procedural generators, as well as how to use the mesh forces for realistic results. He also reveals how to set up and export a leaf as a point cloud in Houdini in order to manage a more optimized setup, as well as great procedural control over the leaf geometry generation and placement based on the direction of the sun.
For those that don't want to export their tree assets to Houdini, Jean-Michel also provides guidance for exporting your trees into other software - in this case, Maya - along with advice for how to get your shaders working in other software packages.
By the end of this tutorial, you should feel comfortable generating a variety of trees growing from any surface, including growing a variety of other vegetation from trees as well. You will also develop a solid understanding of how to deal with importing and exporting your assets between software.
While this is not an introductory-level tutorial, you are not required to be a SpeedTree expert in order to follow along.

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https://www.thegnomonworkshop.com/tutorials/creating-high-resolution-custom-trees-using-speedtree