Haystacks is the common English title for a series of impressionist paintings by Claude Monet. The principal subject of each painting in the series is stacks of harvested wheat (or possibly barley or oats: the original French title, Les Meules à Giverny, simply means The Stacks at Giverny). The title refers primarily to a twenty-five canvas series (Wildenstein Index Numbers 1266-1290) which Monet began near the end of the summer of 1890 and continued through the following spring though Monet also produced earlier paintings using this same stack subject. The series is famous for the way in which Monet repeated the same subject to show the differing light and atmosphere at different times of day, across the seasons and in many types of weather. The series is among Monet’s most notable work.