Vertical Plant Infrastructure

Proposal by June Gardner & Menma Okereke

The proposal explores how Okinawan climatic strategies can inform the future adaptation of Tokyo’s existing residential architecture as the city experiences increasingly subtropical conditions. Rather than treating climate change as a purely technological problem, the project investigates how regional architectural knowledge can migrate within Japan itself. Okinawa’s architecture has long responded to intense heat, humidity and heavy rainfall through passive environmental strategies, including deep overhangs, permeable boundaries and the integration of vegetation as an environmental moderator. These principles become the conceptual foundation for a lightweight retrofit system designed for Tokyo’s aging apartment buildings. The intervention takes the form of an external climatic exoskeleton consisting of three permanent steel vertical members connected by horizontal members at each floor level. Stainless steel cable bracing creates diamond-shaped frames around each window, while a biodegradable mesh spans between the structural elements to support young climbing plants during their establishment. Unlike conventional green façades that rely on permanent planters, the mesh functions only as temporary scaffolding. As the vegetation matures, the mesh decomposes, allowing the plants to become the primary façade, supported directly by the permanent steel frame and cable network.

Inspiration

Naha City Hall: This was a strong precedent for contemporary climatic strategies implemented within Okinawa. But also as a critique, the plant life does not feel well incorporated into the facade in a way that has a profound effect on the building comfort.

Fukugi Tree Road: Trees as infrastructure, especially the Fukugi Tree, with it’s deep and narrow roots and waxy leaves provides shade, a wind-break, and beauty.

The proposal deliberately differentiates vegetation density across the façade. Thick planting bands develop along the horizontal members corresponding to the balcony levels, providing continuous shading, evaporative cooling and rain protection. In contrast, lighter vegetation grows along the vertical members and cable bracing, preserving outward views while softening solar exposure. The diamond cable geometry is carefully configured so that each window is framed rather than obstructed, balancing environmental performance with visual openness.

CASE STUDY

BAUBOTANIC DR. FERDINAND LUDWIG Living Plant Constructions inspired by the ancient art of tree shaping.

Beyond its environmental function, the project proposes a new relationship between architecture and time. Instead of presenting a completed object, the façade is conceived as an evolving ecological system whose appearance transforms as vegetation gradually replaces the temporary support infrastructure. The steel frame remains as a permanent climatic armature while the living façade matures over successive seasons.

SITE: TOKYO

Typical mixed-use building with business tenants on the first floor and residences on the second.

SOLUTION: INTERMEDIATE

A system applied to the facade that includes a biodegradable substrate for plant growth and a permanent lattice that serves as a structure to support plant growth as well as carrying water and nutrients to the plants from graywater collected on the roof.

SOLUTION: ADVANCED

Biodegradable members have been replaced by root structures and plant-life, supported by the thin permanent lattice that adheres the structure to the facade.

Ultimately, the project argues that climate adaptation should not rely solely on mechanical systems or complete redevelopment. By translating the climatic intelligence of Okinawan architecture into a retrofit strategy for Tokyo, the proposal demonstrates how regional knowledge can be reinterpreted to address changing environmental conditions while extending the life of the existing urban fabric.

Read more about Menma & June's proposal here.