Cheriton Hill was the location of the discovery of the Late Spider orchid in the 19th century. At one point the number of known plants at Folkestone/Cheriton declined to just six, but with improved management of the chalk grassland by Eurotunnel and the White Cliffs Countryside Project, the population is now much healthier, estimated in 2008 to be 165 plants, some 30% of the UK population.