Can't add layers to landscape--plus sign is grayed out?

I’m trying to add layers to my landscape, but the plus sign is grayed out and I can’t click on it. I’m only using six materials right now and want to use some materials I purchased that are already set up. Any help would be much appreciated. Thanks!

Hey WolfQ,

I don’t think this is where you actually add layers.

You have to go into your landscape material. In there is a layer blend node.
This is where you can add more layers.



Thank you! I was following a tutorial that definitely led me in a different direction.