Around half of the tree pits in Madrid are in a condition that harms trees, according to a large-scale citizen survey. This emerges from the results of the Ecomapeo Estatal which saw 242 volunteers survey more than 12,000 sites in the capital on 3 and 4 October. Participants’ assessments classed about one in every two sites surveyed as “asfixiante” (suffocating), or hostile to trees, for reasons including undersized soil areas, heavily sealed pits or planting pits completely filled by the trunk.
The immediate context is the combined publication of interim results for Madrid, which were recorded on 14 October. The Ecomapeo Estatal was organised by several environmental and neighbourhood organisations. According to the organisers, around 2,000 people took part across Spain. The initiative aims to produce a reliable, georeferenced picture of the state of urban trees, accessible to both local authorities and the public.
The Madrid data show that problematic tree pits are spread across numerous districts. Frequently reported deficiencies include insufficient soil volume, concrete or asphalt surfaces reaching right up to the trunk, and missing or damaged edging. Such conditions hinder root growth, worsen drought stress and shorten trees’ lifespans. Empty sites and sites containing dead trees were also recorded, to make replanting easier.
The classification that “half are asfixiante” is attributed to volunteers’ assessments on the platform Ecomapa. The city has made no binding commitments so far. The Ayuntamiento de Madrid has not, as of now, responded to the interim results with concrete action plans. Whether the administration will prioritise repairs, enlarging tree pits or using permeable paving in the short term remains unclear.
The organisers stress that the Ecomapeo Estatal is a snapshot intended to highlight the need for political action. In their view, obvious practical steps would include unsealing cramped pits, increasing the volume of soil available to roots, replacing missing trees and carrying out ongoing maintenance checks. Taken together, these measures could reduce heat stress in densely built-up neighbourhoods and improve the health of urban greenery. Without a systematic assessment and a decision by the Ayuntamiento de Madrid, the results remain a civil-society initiative for now – with the potential to reset municipal priorities.
Editor: Andreas M. Brucker (Article created with AI assistance).