Grass for landscape
In the archive there are 2 scenes with a lawn 12x12 meters: Corona + CoronaScatter Vray + MultiScatter To repeat the lawn, use the settings of my scatters (see screenshots)
FBX and OBJ files contain only geometry Grass polygon - 6,938 polygons
Vray Scene - 3.60.03 Corona Scene - 6
Both scenes in the 2014 Max version
Trending tags: lawn, grass, greenery, spring, summer, field, lawn, meadow, garden, forest, landscape, exterior,
For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of the materials is adjusted taking into account PBR
Who works in V-Ray version lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - which is preferable for you
Herb with dandelions here - https://www.cgtrader.com/3d-models/plant/grass/grass-with-dandelions