Dairy farmers generally produce either summer or winter milk, depending on their farm’s calving system, with few exceptions, where milk is produced all year round. Due to its higher production costs, especially the price of organic feed, winter milk attracts a higher price premium than summer milk. Although some organic farmers can produce milk all year round, this option can be limited by the suitability and quality of available land as well as the herd size. Organic dairy producers tend to favour summer milk production because of their breed choice and the sustainability of the system, but the farm gate price for organic milk is often not sufficient to support a viable dairy business.