The Lord Lieutenant of Kent, Lady Colgrain, planted a tree in memory of Queen Elizabeth II during her visit to Gravesham.
The tree was planted in Woodlands Park, Gravesend, as part of the Queen's Green Canopy.
The initiative was originally launched to celebrate the Platinum Jubilee but was extended in memory of the Queen.
It is one of 24 trees planted in the borough as part of the scheme.
Lady Colgrain also presented Gravesend's Gurdwara with one of the 350 trees from the Tree of Trees sculpture at Buckingham Palace, a centrepiece of the Platinum Jubilee celebrations earlier this year.
All of the 350 trees have been gifted to community groups across the UK in celebration of their work.
During her visit, Lady Colgrain visited the Chantry School and Prepworld, one of the borough's biggest employers based in Northfleet.
Stuart Bobby, chief executive of Gravesham Borough Council, said: "It was a pleasure to be able to introduce Lady Colgrain to so many of the people who work so hard to make this borough the inclusive and tolerant community we know and love.
"She was impressed by the way our faith, community, business and education leaders work together for the benefit of all, and by the potential that we are working hard to unlock in the borough in terms of regeneration and growth.
"I would like to thank Lady Colgrain for spending so much time learning more about her borough and for her recognition of so many of those whose important work often goes unsung."