Vincent wrote about this painting to his mother on June 12, 1890:
"Yesterday in the rain I painted a large landscape, showing fields as far as one can see, looked at from a height, different kinds of green growth, a potato field of a sombre green, between the regular beds the rich violet earth, on one side a field of peas in white bloom, then a field of clover with pink flowers and the little figure of a mower, a field of long and ripe grass somewhat reddish in tone, then various kinds of wheat, poplars, on the horizon a last line of blue hills, along the foot of which a train is passing, leaving behind it an immense trail of white smoke over all the green vegetation. A white road crosses the canvas. On the road a little carriage, and white houses with harshly red roofs by the side of this road." (http://www.tfsimon.com/auvers-sur-oise.html)