Tiny moths bring down mighty Chelsea oak trees

OAK trees have been banned at Chelsea Flower Show this year because of fears that the oak processionary moth could spread across Britain.

The moth causes significant damage to oak trees and as a caterpillar releases tiny hairs which can cause severe allergic reactions. It has taken hold in west London, and any oak tree taken to Chelsea risks being infected.

One insider told The Daily Telegraph: “We know one designer who had to redo his whole garden because all the trees he was planning to use were on the banned list.”

Guy Barter, chief adviser at the Royal Horticultural Society, said: “If the disease comes to Chelsea it could easily spread all around the country. We strongly encourage people to source all their plants from Britain.”

Also on the banned list this year is non-native lavender, with anyone showing a garden with the fragrant herb having to source it from England.

The devastating plant disease Xylella fastidiosa is well-established in Spain, where it is commonly found on herbs such as lavender.