Henry and Ruth had two sons, Ian and Colin. When World War II began in 1939 Ian listed as a soldier and went to war. Colin was too young to go overseas as a soldier, so instead he joined the Home Guard, a wartime armed services established to defend New Zealand. Henry farmed through the war with the help of Colin. When Ian return from the war he became a school teacher for a short period before deciding to become a Presbyterian Minister.

In the 1950’s Colin purchased his first combine harvester, as he became interested in growing arable crops. Although the wool boom of the 1950’s kept sheep as the primary focus of the farming operation.  1955 Colin married Joan Hewson. They had 5 children, sadly losing two sons at a young age. They raised 3 children, two sons Ross and David and a daughter Fiona. 

In 1973 the family sadly lost Joan Ross to cancer. Ross and David returned home in the mid 1980’s to farm the land, forming a partnership with their father Colin. In 1987 Colin died suddenly.

In 1999 Ross and David dissolved the family farming partnership. Ross, his wife Rochelle and their young family, Joel and Sarah moved to take on a new challenge farming in Mid Canterbury, with a focus on vegetable production and arable seed crops. The fertile and free draining light soils of the Mid-Canterbury plains was a draw card for them to purchase a 370ha dryland sheep farm in the Chertsey region of Mid Canterbury. 

In the early 2000’s Ross developed the dryland sheep farm. He installed three centre pivot irrigators to combat the Mid Canterbury hot nor west winds during the summer months. As opportunities arose Ross and Rochelle purchased more land within the Chertsey and Barhill region.

In 2017 Hewson Farms (NZ) Ltd was formed to include Joel and Sarah in the farming operation, and to be part of the farms future growth.