 Apparently he did not reline, a process of heavy pressure and heat to flatten the surface, because sharp edges of thick impasto remain on the canvas.In the "Pink Peach Tree", center of the triptych, the bright pink in the painting has faded over time and looks more white than pink now.Van Gogh wrote of his approach, perhaps due to the challenges of painting in the mistral winds, and use of color in painting the flowering tree like the "Pink Peach Tree"