Why the old favourites struggle
Since 2018 the city has lost around 1,200 street trees to drought and pests, most of them sycamore maples and horse chestnuts. Their shallow roots dry out in long summers, and weakened trees fall to fungus within a few years.
Bigger pits, more water
Each new tree gets a planting pit of 12 cubic metres instead of the usual four, filled with a soil mix that stores water. For the first three summers, the parks department waters every tree once a week with 100 litres.
Adopt a tree
Residents can sponsor the watering in their street. More than 300 people signed up in the first week, and the parks department hands out watering bags and a short guide at the town hall.
