How to get smooth terrain textures

How can I get solid color textures to have a smooth transition like the attached image. Everytime I try it’s very blocky and splotchy.

The smoothness of the transition is depending on your terrain size, your control texture resolution in the terrain settings and the gradient of the brush / the tool you use to texture the terrain.

This screenshot was taken from a 128 x 128 terrain with a 2048 control texture resolution. The blue dots were painted with the default “soft spot” Unity brush. The cube has a side length of one unity unit.

Can you try cranking up the control texture resolution and / or reducing the terrain size & post a screenshot if you are still not happy with the results?

Thanks I’ll give that a try and let you know if it works.