Erewhon Station runs a herd of around 24 broodmares as part of its elite Station bred breeding programme. Erewhon's Broodmares all have a touch of Clydesdale blood; there are 10 Registered Clydesdale broodmares, 8 half Clyde and 6 quarter Clyde mares.

Over the years Colin has placed huge emphasis on his mares, building up a strong broodmare band carrying some of the country's top Clydesdale bloodlines. They are big bodied mares that are free moving with kind even temperaments.

One of the biggest advantages of breeding horses on a working high country station is that every mare they use to breed from has been broken in and ridden, and often used for ploughing and in the wagon team. They know which ones are good and if the progeny's conformation or nature doesn't measure up, they are not persevered with.