Bush:
https://www.cgtrader.com/free-3d-models/plant/bush/mediteranean-bush

Rock:
https://www.cgtrader.com/free-3d-models/plant/other/rocks-56c7a2d1-2e36-4b17-8d79-2a69ab29d860

Tree:
https://free3d.com/3d-model/tree02-35663.html

Grass texture:
ambientCG (ambientCG.com)
CC0 1.0 Public Domain Dedication (https://creativecommons.org/publicdomain/zero/1.0/)
Grass001 by ambientCG
https://ambientcg.com/a/Grass001

Snow texture:
https://www.sharetextures.com/textures/ground/snow_ground_3/

Sand texture:
https://www.cgbookcase.com/textures/sandy-gravel-01/?source=3dassets.one

Stone texture:
ambientCG (ambientCG.com)
CC0 1.0 Public Domain Dedication (https://creativecommons.org/publicdomain/zero/1.0/)
Rock048 by ambientCG
https://ambientcg.com/a/Rock048
