Van Gogh showed the plant morphology with concise brushwork, which was full of rhythm and vitality. The whole painting still maintains a consistent yellow tone, but it is lighter and brighter.

In this work, you can't see the short strokes in the self-portrait any more. Here it is. His brushwork is solid and powerful, bold and unrestrained, and he vividly depicts the gorgeous luster and full outline of sunflower. He boldly uses the strongest colors because he clearly knows that "years will make them dim, even too dim." Despite all kinds of protective measures, these colors still fade their original luster.

"Sunflower" breaks the old rules, combines strong contrast colors with heavy color blocks seamlessly, and creates a new contrast color system, which has a far-reaching impact on the future artistic development.

This painting focuses on yellow and orange, with delicate strokes of green and blue to outline petals and stems, and blue is also used for signature and the center of a flower. The dense color spots on the grain have striking effects, and the slender strokes try to show the fullness of the disk and the graceful feeling of the texture.