The work involves placing a concrete layer inside the planters. Ambjent Malta has said the layer will not damage the trees already growing there, describing the membrane's function as protective rather than structural — water ingress into the tunnel network underneath is the problem it is designed to solve.
Upper Barrakka sits on one of the most contested surfaces in Valletta: a formal garden above a warren of wartime infrastructure, with a viewing terrace that has become one of the city's primary public spaces. The intervention is narrow in scope — a waterproofing measure, not a replanting or a redesign — but the assurance about tree health matters because the garden's mature specimens are part of what gives the terrace its character.
What the source does not establish is the timeline for completion, the extent of the tunnel damage that prompted the work, or who commissioned the assessment that concluded tree roots would be unaffected. The claim rests on Ambjent Malta's own statement, with no independent arboricultural or structural verification cited.
Isla Camilleri
Alex de Valletta
Gabriel Fenech