A plant can survive the city without being acknowledged as belonging to it. This asymmetry is not exhausted by the difference between biological presence and cultural preference: it runs through the very instruments that make urban nature actionable. The garden and the vacant lot, the curated arboretum and the roadside colony, the officially selected tree and the species that takes root without permission, all expose a friction between life as an ongoing process and the institutional forms through which life is named, ordered, maintained or eliminated. In the research of Catarina Patoilo Teixeira and collaborators, ecological novelty is not a romantic celebration of wilderness inside the metropolis. It identifies biological assemblages emerging under anthropogenic pressure, including climates and disturbances to which conventional planting prescriptions may be poorly fitted. Novelty therefore cannot be read off appearance alone. A spontaneous patch can provide ecological functions that its unplanned status renders culturally suspect; a formally planted scheme can bear an exemplary environmental label without delivering the ecological diversity that label suggests. This tension is particularly precise in the survey of Portuguese landscape professionals. By decomposing Novel Urban Ecosystems into the axes native/non-native and cultivated/spontaneous, Teixeira, Fernandes, Ryan and Ahern reveal that the act of classification has practical consequences for acceptance. The remarkable implication is not that experts can be persuaded to like plants, but that the conceptual frame through which an organism is presented participates in the judgement made about it. When the description changes, some evaluations shift. Yet the study does not eliminate the distinction between an expressed judgement and an experienced place: its questionnaire records professional responses, not lived encounters along routes, and the authors identify the restricted professional sample as a limitation. The distance is productive. It indicates a form of evidence still required between ecological inventory and social judgement: situated encounter, in which a person may move from heat into shade, from a visibly maintained path into spontaneous growth, from a refuge to an obstructed sightline, and register different forms of comfort or uncertainty without first classifying the vegetation botanically. The adaptive planting framework takes a second step by refusing to make the design of nature into a single moment of authorship. Climate assessment, trait-based species knowledge and iterative management form a sequence in which a site must remain capable of teaching its designers. The categories remove, monitor, keep and add appear practical, but they disclose an ethics of non-finality: ecological value can alter as environmental conditions change, and the grounds for intervention can be reconsidered. This is a discipline of provisional decisions, not an exemption from ecological risk. The accompanying plant-traits database clarifies how such decisions are made legible. Two hundred and eighty-seven species become a structured field of recorded capacities, tolerances, forms and potential hazards; the data's apparent stability conceals both the work of sampling and the inevitable selectivity of its variables. A crown can be described through density and dimensions, but its perceived hospitality is not reducible to those attributes. A flowering season may indicate potential resources for insects, but neither the actual activity of pollinators nor the aesthetic meaning of a meadow follows automatically from a spreadsheet entry. Fernandes and colleagues' study of seed mixtures sharpens this distinction between designation and performance: a market in ecological solutions depends on descriptors whose credibility must be checked against composition and explicit criteria. Only a minority of the mixtures examined meet the paper's selected pollinator-friendly criteria, a result that does not warrant universal claims about all mixes but does expose the fragility of self-declared environmental virtue. At the other end of the spectrum, the arboretum represents nature made deliberately legible: accession, arrangement, circulation and visitor services operate together, transforming living collections into an architectural and educational apparatus. Its spatial order does not merely accommodate botanical knowledge. It edits the sequence in which knowledge can be encountered. The cultivated and the spontaneous are thus not two opposing kinds of vegetation. They are two unstable political and epistemic positions within an urban system that decides how nature becomes evidence, experience and public legitimacy.
The difficulty for Socioplastics begins exactly where the conventional green map appears sufficient. A mapped polygon labelled park or an inventory point labelled tree can be correct in its own terms and still fail to explain what becomes possible for a particular walker at a particular hour. The botanical, administrative and experiential descriptions of the city do not occupy the same scale or temporal resolution. An ecological dataset may follow species and traits; a planning layer may locate designated land uses; a visitor may remember the cool edge of a wall, an inaccessible gate, flowering weeds beside a neglected pavement or the unexpected attraction of a less regulated landscape. None of these observations invalidates the others, but none should be allowed to stand in silently for them. This is the opening for an observational grammar in which living vegetation, spatial affordance, interpretation and movement are recorded as distinct yet potentially comparable layers. Teixeira's research offers both resources and warnings for such a grammar. The plant-traits database demonstrates the utility of clearly defined fields, source provenance and reusable classifications. Its sampling from ecologically novel sites demonstrates that selection is never innocent: a database is shaped from the start by a decision about which places will count. The arboretum study demonstrates how standardised georeferencing and vectorisation can make unlike landscapes comparable, while its institutional diversity reminds us that the common map does not dissolve local governance, histories or modes of access. The professional-attitudes survey warns against confusing familiarity with ecological categories and public acceptance; indeed, a visitor's relation to spontaneous vegetation may be articulated without any prior awareness of ecological novelty as a scientific idea. For fieldwork, the consequence is to avoid asking walkers to become amateur botanists. Expert ecological assessment can remain an independent layer, linked to but not substituted for statements about shade, visibility, scent, vegetation density, perceived care, fear, pleasure or fatigue. The record of a walk would then be a sequence of situated differences, not a global vote on whether greenery is desirable. The same tree may provide shade and obstruct a sightline; spontaneous vegetation may carry habitat value and still be read as neglect; a planted mix may be rich in signage but poor in sustained floral resources. These conditions should not be flattened into an automatic composite score. They can instead be described through documented relations and unresolved disagreements: the experience is specific, the ecological evidence independent, and the comparative claim limited to variables that can legitimately travel between settings. Seasonal repetition becomes essential because vegetative performance and human responses have different calendars. An arboretum's circulation network may remain recognisably stable while its canopy, flowering, access conditions and public uses change; a roadside meadow may be briefly spectacular before being cut, and a vacant site may move between refuge, habitat, enclosure and redevelopment without altering its position on the map. Field evidence therefore needs time-stamped observations, an explicit account of what was actually seen, a distinction between measured properties and attributed meanings, and a record of the conditions under which comparison was made. Metadata are not clerical additions here. They are the means by which a claim can remain answerable to the circumstances of its production. An archival photograph of an overgrown lot, a botanical inventory and an interview about its perceived safety may all be durable records; their productive relation depends on keeping their objects, periods and methods visibly distinct. The same principle applies to governance. A city's vegetation does not speak in a single register. Municipal maintenance, biodiversity conservation, residents' claims, professional design judgements and the legal treatment of invasive risk can authorise contradictory interventions in the same space. The question is not how to abolish conflict through a perfect ecological indicator, but how to preserve enough of its structure for decisions to remain revisable and publicly intelligible. An urban research instrument earns its authority by making the limits of its claims inspectable. Teixeira's constellation makes possible an account of landscape not as a decorative surface covering urban infrastructure, but as a changing infrastructure of living capacities whose meanings are co-produced by classification, administration, ecological processes and situated encounter. Within Socioplastics, this tension can be retained without inventing a new operator: it demands a comparative record in which the spontaneous is neither romanticised nor erased by the cultivated.
