arboricultural

"By exploring the genome of ancient trees, we can understand how to manage them better so that we can secure their future for generations to come," says Dr Emma Gilmartin of the tree charity, the Arboricultural Association, which is involved in the project.

In a statement, Miss Roper's father, Adrian Roper, said he hoped concerns raised by an arboricultural consultant earlier in the inquest would be taken onboard.

“A lot of people do it because they think it’s going to enhance flowering, but it actually delays flowering onset as much as a month,” said Tom Smiley, senior arboricultural researcher at Bartlett Tree Research Laboratories in Charlotte.

The arboricultural report said the tree had been "in hazardous condition for several years, and prior to January 2018 at least three stems would have been clear threats to the railway".

After the two leaders departed, U.S. officials dug up the tree and isolated it in quarantine — the arboricultural version of family separation — and there it died.