This is a paid asset, but now you can download GreenLeaf – Tree Pack 2 for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
GreenLeaf – Tree Pack 2 v1.0
GreanLeaf is a tree pack made with the Unity TreeCreator. It contains a total of 30 models. All the trees are fully customizable and interact with windzones. All the trees have low to medium poly count.
This pack contains:
-3 Big Birch Trees (1360-1456 tris)
-3 Tall Birch Trees (912-1052 tris)
-3 Medium Birch Trees (908-1156 tris)
-3 Small Birch Trees (636-832 tris)
-3 Birch Saplings (396-492 tris)
-3 Big Oaks (1292-1860 tris)
-3 Tall Oaks (1048-1336 tris)
-3 Medium Oaks (1088-1308 tris)
-3 Small Oaks (648-684 tris)
-3 Oak Saplings (320-608 tris)
-source materials and textures
(512×512 birch textures, 1024×1024 oak textures)