In 2020, Anne Hidalgo has dedicated to making 4 city forests in Paris. What about as of late? Did those tasks actually create “forests”? Are they sufficient in occasions of local weather alternate?
Paris is likely one of the worst Ecu towns all the way through warmth waves. To switch this example, expanding the choice of bushes turns out extra important than ever. Particularly since best 14% of its space is forested, now not bearing in mind the peripheral forests of Boulogne and Vincennes, and 21% together with them, Paris could also be one of the most least forested capitals in Europe.
In an effort to enhance this example, the present mayor of Paris, Mrs. Anne Hidalgo, has dedicated to plant 170,000 bushes all the way through the time period 2020-2026. A number of the primary operations of this challenge is the introduction of 4 “urban forests” in Paris.
5 years after those guarantees and a couple of weeks earlier than the municipal elections, what overview are we able to make of those tasks?
Which places are affected?
Despite the fact that the deliberate places had been modified because of technical difficulties, 3 city forests have already opened: the ones at the Position de Catalogne in June 2024, the Bois de Charonne in September 2024 and the sq. in entrance of the Lodge-de-Ville in June 2025, with the inauguration of a fourth deliberate at the Position du Coloen in early 2026.
Myrtle, a Mediterranean shrub planted within the city woodland of Charonne, November 29, 2025 Serge Muller, Equipped by way of the creator
The primary location corresponds to the Position de Catalogne within the 14th arrondissement. This roughly 1 hectare (ha) sq., which shaped a site visitors circle with what was once in the beginning a fountain within the heart, was once totally mineralized and treeless. It was once planted on over 4,000 sq. meters (m2) by way of planting 470 bushes comparable to 16 other species, i.e. a density of 12 bushes consistent with 100 m2, supplemented by way of planting 1,200 trees.
Some other website, moderately linear, referred to as Bois de Charonne, is positioned within the twentieth arrondissement at the former railway line of the interior ring highway with the encircling space. It covers about 2 ha. Virtually 112 tall bushes had been planted there amongst about 7,500 younger seedlings of 40 other species, in conjunction with about 2,200 trees additionally of 40 other species. This new woodland is positioned in continuity with the present sq. of one.5 ha, “Garonne de la gare de Charonne”. Open information from the Town of Paris recently counts 295 bushes for this 3.5 ha space, or roughly 1 tree consistent with 100 m2.
Charonne tree presentation.
The 3rd location is positioned within the sq. in entrance of the Lodge-de-Ville. It is composed of 2 inexperienced spaces, with a complete space of 2,500 m2, separated by way of a central phase that is still mineral.
Presentation of the The city Corridor Sq..
Consistent with the open information of the Town of Paris, 46 mature bushes (as much as 10 m top) of 5 other species (hornbeam, American honeysuckle, bushy oak, julienne maple and joshen maple) had been planted there. Different smaller bushes or trees of various species (oak with leaves, arbutus, sea buckthorn) had been planted at the outer edge of the advanced with a space of over 850 m2, with the intention to support the crops of where.
An arbutus tree (photograph left and heart) and a Julian tree (photograph proper) within the city woodland of Lodge-de-Ville, November 27, 2025 Serge Muller, Equipped by way of the creator
The fourth location, nonetheless within the means of being finished in early 2026, is positioned at Position du Colonel-Fabien (intersection of the tenth and nineteenth arrondissements). It corresponds to the development challenge of an city woodland of one,460 m2 with the deliberate planting of 79 new bushes. It must be finished within the first quarter of 2026.
What are the traits of those new city forests?
A lot of these spaces had been evolved by way of draining mineral websites or railway wastelands, with an important addition of the outside layer of the soil and the planting of already massive bushes (peak from 3 to 7 m and much more), adopted by way of smaller seedlings of bushes and shrubs. Those forests had been created in relatively variable spaces relying on land availability (between 1,400 m2 for the Position du Colonel-Fabien and round 20,000 m2 for the brand new plantations within the Bois de Charonne). The function is subsequently to briefly construct moderately dense forested spaces from the preliminary state of the mineral substrate.
Position de Catalogne woodland building website, December 18, 2023 Serge Muller, Equipped by way of the creator
However are those vegetated spaces forests? No longer actually, if we depend at the definition utilized by the Meals and Agriculture Group of the United Countries (FAO) for which the time period woodland manner a inhabitants of bushes with a space of no less than part a hectare (5,000 m2) and a tree quilt of no less than 10%, because of this that, as observed from the sky, the 0% tree space should exceed the 0% tree space.
What are the diversities with city squares and parks?
Those mini-urban forests are most likely nearer to the squares, gardens and concrete parks of Paris, of the Haussmann sort or extra not too long ago (comparable to Parc Brassens, within the fifteenth arrondissement), in that in addition they supply areas of peace and walks for town dwellers.
However the forests are denser and the game spaces are smaller in those mini-urban forests than within the squares, without a play spaces, as an example, for kids. The Charonne City Woodland is a little particular on this regard as a result of it’s positioned within the background of the “Charonne station station”, a sq. of one.5 hectares that was once created in 1986, this is 40 years in the past, at the website of the previous Charonne station.
Charonne City Woodland November 29, 2025 Serge Muller Equipped by way of creator
Those city forests additionally purpose to be extra “natural” by way of favoring as afforestation the ones indigenous to the Paris Basin or mainland France and lowering the share of unique species. Thus, nearly 60% of the bushes within the city woodland of Position de l. a. Catalogne correspond to indigenous species within the Paris Basin, and the remainder are of sub-Mediterranean, American or Asian beginning. Alternatively, shrubs have now not been given the similar consideration, as 95% of the vegetation presented into this city woodland correspond to 2 species local to the A long way East (bush dumbbell and Australian mint). As for presented herbaceous vegetation, it’s most commonly a patchwork of fern types.
City woodland at Position de Catalunia with ferns within the foreground, April 20, 2024 Serge Muller, Equipped by way of the creator
As a substitute of a heterogeneous mix of floral teams of various origins, shall we experiment with an solely sub-Mediterranean procession, with the intention to check its adaptation to the climatic stipulations of the next a long time.
Neither true forests in step with the FAO definition, nor precisely squares, those new areas additionally transfer clear of every other fashion: Miyawaki micro-forests, which correspond to very dense plantations of younger vegetation (as much as 3 folks consistent with sq. meter) not up to one meter top and of species which are, in theory, best autochthonous. Alternatively, those new Parisian mini-urban forests usually have a peak of a couple of meters, which is able to exceed 7 meters, and likewise a far decrease density, from one to 10 bushes consistent with 100 m2, on spaces which are in theory higher, as much as 2 ha for Charonne tree plantations.
What’s the goal of those new mini-urban forests in Paris?
Those new reforestations, which should essentially be tailored to native potentials and boundaries, are relatively numerous of their dimensions and configurations (relatively rounded for previous squares such because the squares of Catalonia or Colonel Fabien, to the contrary, elongated for the previous railway Bois de Charonne).
Charonne City Woodland November 29, 2025 Serge Muller Equipped by way of creator
The compositions and buildings of planted populations of bushes and shrubs also are relatively variable, relying on context and alternatives, however at all times with the purpose of adapting to long term local weather stipulations. Alternatively, the advantage of regional species dominance stays questionable on this context of local weather alternate. The introduction of stands with an ideal variety of species and a heterogeneous construction is the sturdy level of those new city forests, which must permit an build up of their resistance to climatic disturbances and the risks to which they’re going to be uncovered.
Those plantings unquestionably give a contribution, on admittedly modest spaces, to the greening of town, in addition to to the rise of its cover and ecological continuity. Those are pilot operations, with sturdy media affect and moderately top prices, demonstrating the feasibility and panorama and environmental passion of such operations to create ex nihilo “urban forests”. Alternatively, it’ll be important to inspect their evolution within the coming a long time.
City woodland in entrance of the Lodge-de-Ville, November 27, 2025 Serge Muller, Equipped by way of the creator
Those creations of city forests should essentially, as deliberate by way of town’s “Tree Plan 2021-2026”, be complementary and ideally in continuity with different varieties of plantings comparable to tree leveling, introduction or enlargement of city parks and squares, densification of tree populations in cemeteries, schoolyards, squares, open embankments and different roadways. The function should be to additional considerably build up cover protection within the town of Paris and the Higher Paris city, to assist higher adapt those city spaces to local weather stipulations within the a long time to return.
