 While T-Posts are more common in the United States, Y-posts are more common in Australia and New Zealand where they are sometimes called "Waratahs", after the company which registered a patent for them in 1926.In New Zealand Waratahs are often used for trail blazing.In areas (such as the British Isles) where treated timber is relatively inexpensive, wooden fence-posts are used and steel ones are unusual for agricultural purposes.