As it forms a perfect mat, it should be divided and replanted every two years.
Other ancient woodland sites have been replanted with conifers or broadleaved plantations, or have been converted to other habitats or land use.
In fact the industry uses fast-growing softwoods, which are being replanted faster than they are being used.
To set up this single plant operation, 5,600 square miles of Amazon Rainforest was burned to the ground and replanted with pulpwood trees.
If the plant is divided and replanted it will amply repay the trouble by increased vigour and larger flowers.