Biophilic Design
An evidence-based design framework that integrates natural elements, patterns, and processes into the built environment to support human health, cognitive performance, and well-being. Rooted in E.O. Wilson's biophilia hypothesis and operationalized through Terrapin Bright Green's 14 Patterns of Biophilic Design.
WELL v2 Credit
WELL v2 Feature M02 (Nature and Place), restorative space features
LEED Credit
LEED v4.1 Quality Views, Daylight credits
Commercial Application
Applied across all commercial building types — offices, healthcare, hospitality, education, and multifamily — through living walls, interior plantscaping, natural materials, daylighting strategies, and water features.
Living Wall
A vertical vegetated assembly permanently attached to an interior or exterior building surface, comprising a structural frame, growing medium, integrated irrigation system, and living plant material. Distinguished from green façades by the use of modular panel or pocket systems rather than climbing vines.
CSI Division
CSI 09 77 53 — Vegetated Wall Systems
WELL v2 Credit
WELL v2 Feature M02 (Nature and Place)
LEED Credit
LEED v4.1 Indoor Environmental Quality
Commercial Application
Installed in corporate lobbies, healthcare atriums, hospitality common areas, and educational facilities. Budget from measured planted wall area, complete installation proposals and annual care scope.
Interior Plantscaping
The professional design, installation, and maintenance of living plant collections within enclosed commercial environments. Encompasses container plantings, green walls, moss installations, and seasonal rotations, typically delivered through managed service contracts.
CSI Division
No dedicated MasterFormat section; planter products listed under 12 92 00 / 12 92 33
WELL v2 Credit
WELL v2 Feature M02 (Nature and Place)
Commercial Application
Standard practice in Class A office buildings, healthcare facilities, hotels, and institutional campuses. For managed service, compare actual installation charges, annual care and replacement coverage.
Plant-as-a-Service (PaaS)
A managed service model where a plantscaping provider retains ownership of plant material and containers, delivering design, installation, maintenance, and guaranteed replacements under a recurring monthly contract. Shifts biophilic design from capital expenditure to operational expenditure.
Commercial Application
Preferred model for corporate offices, hospitality, and healthcare where guaranteed plant health and aesthetic standards are contractually required. Typical contracts: 3–5 years.
Vernacular Biophilia
Region-specific biophilic design strategies that reflect local ecosystems, seasonal patterns, and cultural relationships with nature. In cold climates, this includes preserved moss installations, winter-tolerant species selections, and seasonal light compensation strategies.
WELL v2 Credit
WELL v2 Feature M02 (Nature and Place)
Commercial Application
Critical for projects in northern climates (USDA Zones 3–5) where tropical species may underperform. Vernacular approaches can reduce plant replacement rates compared to generic tropical palettes.
Fractal Geometry
Repeating self-similar patterns at multiple scales found throughout nature — in branching trees, leaf venation, river networks, and cloud formations. In biophilic design, fractal patterns are incorporated through material selections, partition designs, and architectural detailing to trigger stress-reduction responses.
WELL v2 Credit
WELL v2 M02 Nature and Place — precondition; M07 Restorative Spaces requires separate review
Commercial Application
Applied in ceiling tile patterns, partition screens, flooring layouts, and living wall compositions. Research indicates fractal patterns with a fractal dimension (D) of 1.3–1.5 produce the strongest stress-reduction effects (Taylor et al., 2011).
Prospect-Refuge Theory
An evolutionary psychology framework proposing that humans prefer environments offering clear sightlines (prospect) while also providing enclosed, protected positions (refuge). Applied in commercial design through strategic furniture placement, ceiling height variation, and planting schemes.
Commercial Application
Used in open-plan offices to create alcove seating with overhead canopy plantings, in healthcare waiting areas with screened zones, and in hospitality lounges with layered vegetation boundaries.
Dormant Biophilia
Design elements that maintain biophilic qualities when living plant material is not actively present — including preserved moss, botanical artwork, natural material palettes, water features, and nature-inspired acoustic treatments. Provides baseline nature connection during plant dormancy or replacement cycles.
Commercial Application
Essential in cold-climate projects where seasonal plant dormancy creates gaps in living green infrastructure. Preserved moss walls provide year-round biophilic texture without irrigation or maintenance.
3-30-300 Rule
A quantified nature-access framework proposing that every resident should be able to see 3 trees from their window, live in a neighborhood with 30% canopy cover, and be within 300 meters of a public green space. Adapted for commercial interiors as a proximity-based biophilic design benchmark.
Commercial Application
Used by multifamily developers and corporate campus planners to establish minimum biophilic thresholds. Interior adaptation: every workstation within 30 feet of living plant material, 3% of floor area dedicated to biophilic elements.
Hydroponic Growing Medium
Soil-free substrate systems used in living wall assemblies, typically comprising mineral wool, felt pockets, or expanded clay aggregate (LECA). Eliminates organic soil decomposition, reduces pest pressure, and allows precise nutrient delivery through fertigation systems.
CSI Division
CSI 09 77 53 — Vegetated Wall Assemblies
Commercial Application
Standard growing medium for interior living walls. Mineral wool panels provide consistent moisture distribution and root anchoring. Requires pH-balanced nutrient solution delivered at 150–200 ppm nitrogen.
Fertigation
The delivery of dissolved mineral nutrients through an integrated irrigation system. In living wall applications, fertigation systems automatically dose nutrient solutions at programmed intervals, maintaining consistent plant health without manual fertilization.
CSI Division
CSI 09 77 53 — Vegetated Wall Assemblies
Commercial Application
All commercial living walls require automated fertigation. Systems typically deliver balanced liquid fertilizer (NPK 20-20-20) at 100–200 ppm through drip emitters on programmable timers.
WELL Building Standard v2
A performance-based certification system administered by the International WELL Building Institute (IWBI) measuring building features across 10 concepts — Air, Water, Nourishment, Light, Movement, Thermal Comfort, Sound, Materials, Mind, and Community — that impact human health and well-being.
Commercial Application
WELL v2 M02 Nature and Place requires both nature integration and connection to place. M07 Restorative Spaces is separate; individual planting elements alone do not establish compliance. Air concept features are earned through ventilation and filtration, not planting.
Phytoremediation
The capacity of certain plant species to absorb, metabolize, or sequester indoor air pollutants including volatile organic compounds (VOCs), formaldehyde, and particulate matter. Documented by NASA Clean Air Study (1989) and subsequent peer-reviewed research.
WELL v2 Credit
No direct WELL Air compliance pathway from ordinary indoor planting
LEED Credit
LEED v4.1 Indoor Environmental Quality
Commercial Application
Chamber findings do not establish pollutant removal at occupied-building ventilation rates. Ordinary indoor planting is not a substitute for ventilation, filtration or source control and does not establish air-quality certification compliance.
Circadian Lighting
Dynamic lighting systems that modulate color temperature and intensity throughout the day to align with human circadian rhythms. In biophilic design, circadian lighting is paired with living plant installations to reinforce diurnal nature patterns indoors.
WELL v2 Credit
WELL v2 Feature L03 (Circadian Lighting Design)
Commercial Application
Integrated with living wall grow lights to provide both plant photosynthetic requirements (PAR 150–250 µmol/m²/s) and circadian-appropriate ambient light for occupants.