Edge bleeding with opacity map

Question

I want to layer a grass texture with opacity over a dirt texture to form an edge. Both on the same model. But I'm getting edge bleeding from the opacity. I made both textures within Substance Designer (or any other texturing app). The 1x1 model is just a default plane made within Blender (or any other modelling app). You can see the bleeding in Substance Designer and in Unity. I did make a fast simple layered shader within Unity for both materials, just for reference. So I can apply both materials onto one mesh. I do think, that I understand why this is happening, but how do I fix it? Maybe there is a much better way to do this? I'm using URP.

Substance Designer (grass):

Within Unity:

I want to achieve something like this:

Answer 1

Select the texture in your Assets folder, and change the Wrap Mode to Clamp.

This says that samples near the edge of the texture should clamp to the pixel on that edge, instead of repeat which wraps around to blend with the pixels from the opposite edge (good for when you want tiling effects, not so good for a single quat)