Most councils will not allow a plaque to be added to a street tree. Councils are very resource poor, and the extra task of adding a plaque to a tree is simply not practical. It would also course all sorts of difficulties if residents were to place their own plaques on trees.
In some cases, if your council runs a dedicated memorial tree planting programme, then they may have a process in place to arrange for a plaque. These memorial programmes tend to be restricted to more high-profile locations, such as parks, and towns squares, and often the locations will have been pre-selected by the council.
We will provide details of any such memorial schemes on page for your local council, (available from Easter 2021.)