Creating a convincing bark material procedurally in Blender is a great way to add realism to trees, logs, or environmental assets – without relying on image textures.
In this tutorial, you’ll build a bark material from scratch using Blender’s Shader Editor. The focus will be on combining noise, distortion, and color variation to mimic the rough, layered structure of real tree bark.
Step 1: Basic Material
1. Select your object and create a new material – naming it appropriately
2. Make sure you have the Node Wrangler add-on activated
3. Make sure you are in material preview so you can see your material
Step 2: Base Texture
1. Use SHIFT + A to add a Voronoi texture and connect the distance output to the base color of the principled shader
2. Change the distance metric to Chebychev to change the texture to squares instead of circles
3. Increase the scale to make the texture smaller [9]
4. Select the Voronoi Texture and use CTRL + T to add mapping and texture coordinate nodes
5. Change the Texture Coordinate to Object
6. To stretch the texture, decrease the Z-Scale on the mapping node [0.25]
7. To add distortion to the Voronoi texture, use SHIFT + A to add a noise texture between the texture coordinate and mapping nodes
8. Increase the scale and detail levels of the noise texture [8, 15]
9. To more easily control the distortion, use SHIFT + A to add a mix color node
10. Connect the object output of the texture coordinate to the A-input of the mix color node and the color output of the noise texture to the B-input of the mix color node
11. Connect the mix color node to the vector input of the mapping node
12. Change the blending mode of the mix color node to linear light to more easily control the distortion using the factor
13. Lower the factor of the mix color node so the texture coordinate is mostly being used with small assistance from the noise texture [0.075]
14. To add some color, use SHIFT + A to add a color ramp between the Voronoi texture and principled shader
15. Change the black color stop to a light brown color [#967759FF]
16. Add a third color stop and move it closer to the black color stop
17. Change the color to a darker brown [0.3] [#593F29FF]
18. Change the white color stop to a very dark brown [#0D0905FF]
19. Moving the white color stop will increase the contrast
20. Select the noise texture, mix color, mapping node, Voronoi texture, and color ramp
21. Use the F-key to add a frame and rename it to base
Step 3: Roughness
1. Use SHIFT + A to add a Color Ramp to control the roughness
2. Connect the Voronoi texture to the new color ramp
3. Connect the new color ramp to the roughness input of the principled shader
4. Change the black color stop to a lighter color in order to make the bark rougher [#C8C8C8FF]
5. Select the color ramp
6. Use the F-key to add a frame and rename it to roughness
Step 4: Moss
1. Use SHIFT + A to add a noise texture
2. Connect the texture coordinate node to the new noise texture
3. To preview the factor of the noise texture, connect it to the base color of the principled shader
4. increase the scale, detail, roughness, and distortion of the noise texture [8, 15, 0.75 0.4]
5. To add more contrast, use SHIFT + A to add a color ramp between the noise texture and the principled shader
6. Move the black and white color stops to increase the contrast [0.55, 0.75]
7. Use SHIFT + A to add a mix color node
8. Connect the color ramp for the moss to the Factor to tell Blender where the moss is to be placed on the texture
9. Connect the color ramp of the base texture to the A-input
9. Connect the mix color node to the principled shader
10. Change the B-input color to a green for the moss [#7AA05CFF]
11. Select the noise texture and color ramp
12. Use the F-key to add a frame and rename it to moss
Step 5: Normals
1. Use SHIFT + A to add a bump node and connect it to the normal input of the principled shader
2. Connect the Voronoi texture to the height input of the bump node
3. Increase the distance of the bump node to see the effect
4. Select the bump node
5. Use the F-key to add a frame and rename it to bump
Conclusion
By combining noise textures, distortion, color ramps, and bump mapping, you can create a fully procedural bark material that looks organic and detailed – without any image textures. This approach is powerful because it’s endlessly adjustable: you can create anything from smooth young bark to deeply cracked old tree trunks just by tweaking parameters.