Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Alien Fantasy Forest Free.
Alien Fantasy Forest v1.2 (Latest version)
This Alien Fantasy Forest pack will help you create a colorful environment, filled with different kinds of flora and other useful assets.
The package contains:
– 10 species of trees/shrooms and their variations
– 11 types of bushes (+ variations as well)
– LoD systems for all assets
– procedular ground textures and Substance material files
– Demo scene for presentation