Asset is governed by the Asset Store EULA; however, the following components are governed by the licenses indicated below:

LightweightWavingGrass.SHADER
Unity Companion License
[license and copyright/accreditation details—determined by relevant license]

LightweightWavingGrassBillboard.SHADER
Unity Companion License
[license and copyright/accreditation details—determined by relevant license]

LightweightPassDepthOnlyGrassSnow.hlsl
Unity Companion License
[license and copyright/accreditation details—determined by relevant license]

LightweightPassLitGrassSnow.hlsl
Unity Companion License
[license and copyright/accreditation details—determined by relevant license]

License link:
https://unity3d.com/legal/licenses/Unity_Companion_License