// Vanilla
net.minecraft.block.BlockGrass

// Biomes O'Plenty
biomesoplenty.common.block.BlockBOPGrass

// Tinker's Construct
tconstruct.blocks.slime.SlimeGrass

// Enhanced Biomes
enhancedbiomes.blocks.BlockGrassEB

// TerraFirmaCraft
com.bioxx.tfc.Blocks.Terrain.BlockGrass