Ahead of hosting a Christmas carol service dedicated to Queen Elizabeth , the Princess of Wales planted a tree in honor of her late grandmother-in-law. It was revealed on Tuesday that Catherine planted a wild cherry tree in Dean’s Yard at Westminster Abbey last week to mark the memory of Queen Elizabeth, who passed away in September.

The tree is from the estate of the Duchy of Cornwall, according to Westminster Abbey. The Duchy of Cornwall is a private estate established by Edward III in 1337. Prince William is the current Duke.

Catherine, who recycled her double-breasted Holland Cooper coat, planted the tree for the Queen’s Green Canopy, a tree planting initiative that was created to mark Her Majesty’s Platinum Jubilee.

During the outing last week, the Princess of Wales also unveiled a plaque that reads: “This wild cherry tree, a gift from the Duchy of Cornwall, was dedicated in memory of Her Late Majesty Queen Elizabeth II by Her Royal Highness The Princess of Wales on 14th December 2022.”

Catherine dedicated the tree the day before hosting her second annual Christmas carol service at Westminster Abbey. Several members of the British royal family came together on Dec. 15 for the Together At Christmas carol service, which paid tribute to Queen Elizabeth and “the values she demonstrated throughout her life, including empathy, compassion and support for others.”

The service will be broadcast as part of Royal Carols: Together At Christmas, a special program airing Christmas Eve on ITV1. It will also be available on BritBox.