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A virulent infection first seen in the US is spreading like wildfire through Britain's woods and forests, causing million of trees to be cut down.
Phytophthora ramorum first surfaced in America and is known there as Sudden Oak death, responsible for a massive number of tree deaths amongst species of American oak. In 2002, a fungus was discovered on a viburnum plant is a Sussex garden and identified as
Phytophthora ramorum. Since then, the plague has spread at an incredibly fast rate and is jumping species, with the English oak, around 100 other tree species and even rhododendrons falling prey to the pathogen.
Phytophthora ramorum affects tree bark, causing lesions which bleed black fluid, followed by blackening foliage and the death of the tree. According to the National Trust, this tree plague is far worse than Dutch Elm disease as the spores are now reproducing at an incredibly fast rate in one of England's commonest trees, the Japanese larch.
Comment: It's difficult to see what the RSPB is getting excited about, given that the organisation warned last week that populations of wild birds in the UK have registered an alarming 24% decline in recent decades.