Texture photography is created by starting with a normal photograph and the applying a texture layer over the top of the original photograph.
Here is a photo of a cleome, which is actually pink. The texture layer was applied twice giving two different looks, one the color and the other the textured look.
This one is cloned to get two of the same image and then a texture is applied.
More flowers with textures and overlays.
This one is done with a texture and then an overlay.