Latest Tree Scattering script? Grow a Tree

Please cast your votes in our two ongoing feedback polls here and here!

    Trying to use Arno's grow a tree dynamo script, but not sure I have the latest version or one that is compatible with Revit 2021/Dynamo 2.6.1.8850.
    Can someone point me to this?
    What additional packages will be required?

    Also, does his script work to place vegetation on toposurfaces?


    Any other scattering approaches worth trying?


    Thanks.