Haggerston is a hamlet located in the county of Northumberland, England about 5 miles (8 km) south of Berwick-upon-Tweed and adjacent to the A1 road.

It is known that John de Hagardeston inhabited the castle in the late 12th and early 13th century, his death having been documented circa 1210.

On his death in 1891, it was inherited by his nephew Christopher John Naylor (1849–1926), who gave up his family home Leighton Hall, Powys to his brother, and moved to Haggerston, changing his name to C.J.

By 1893 he had rebuilt the main house, and like his father John Naylor started to develop his own gardens at Haggerston, overseeing the landscaping of the 23,000 acres (9,300 ha) estate.

[1] His brother John sent him six Cupressocyparis leylandii, a hybrid tree which had cross pollinated naturally at Leighton Hall in 1888 when the female flowers or cones of Nootka Cypress were fertilised by pollen from Monterey Cypress[2] Naylor also laid out a 1.4 acres (0.6 ha) Italian garden.

Naylor's death in 1926, in 1933, the ruins of the house were demolished and the estate auctioned off in 2,000 lots,[1] to try to recoup some of the family fortune.

Commercial nurseries spotted the now termed Leylandii's potential, and for many years it was the biggest-selling item in every garden centre in Great Britain, making up to 10% of their total sales.