If you are looking for free tools to handle vegetation and scattering, these are highly rated by the community: Blender Addon for Creating Forrests | Alpha Trees

Alpha Trees Pro 2.33 is a popular add-on for Blender, a free and open-source 3D creation software. This add-on allows users to quickly and easily create realistic trees and foliage, making it a valuable tool for architectural visualization, game development, and animation projects.

Artists love version 233 because it represents the "goldilocks" point between the older, blurry packs and the overly heavy new-generation 3D scans.

Blender's material settings can significantly affect how your trees look. Play around with the shader settings to achieve a realistic leaf and bark effect.

: Select a plane or terrain, add a Biome Slot , and add tree types. The trees will automatically face the active camera using a "billboarding" effect.