Tamarisk, or Tamarisk House, is a house belonging to Charles, Prince of Wales, on St Mary's in the Isles of Scilly, in the United Kingdom off the coast of Cornwall.
The house is a cottage built in brick in the mid 1960s, standing in a plot of a quarter of an acre, largely hidden from view by tamarisk trees. It is sometimes lent to friends and relations of the prince. Before he separated from Diana, Princess of Wales, they spent holidays in the Isles of Scilly but preferred to stay with friends on Tresco.
Most of the rural portions of the Isles of Scilly are owned by the Duchy of Cornwall, although most properties in Hugh Town, the largest settlement in the islands, were sold to inhabitants by King George VI in 1949, and the island of Tresco has been leased to the Dorrien Smith family since 1834.
Tamarisks are deciduous flowering shrubs which grow in thickets. They are rarely seen on the English mainland, but flourish in the warmer climate of the Isles of Scilly.