Procedural Nature Pack - Vol.1

Hello,
So I think I have a dumb question but I have been up for over 24hr and might be a little crazy. I cannon for the life of me figure out what material to put in the landscape to get it to blend correctly with the procedural grass. I currently put the blend master in the land scape so I have the three layers; with this I have not been able to get the grass output to work correctly. Any help with this would be welcome. Thanks in advance, Love the Pack and everything else you have put on the marketplace (I have purchased it all).