Your questions answered - FAQ on living walls

Get ready to dive into the greenery-filled world of vertical gardens, where walls come alive with nature's vibrant hues. From unraveling the benefits that go beyond aesthetics to exploring suitable plant choices and maintenance rituals, this FAQ guide is your ticket to becoming a living wall aficionado.

What is a living wall?

A living wall, also known as a green wall or vertical garden, is a structure that incorporates living plants, either growing directly on the wall or in modular panels.

Living Wall By Sagegreenlife and Gensler
Photo: Architizer

What are the benefits of a living wall?

Living walls offer numerous benefits. They enhance indoor and outdoor aesthetics, adding a touch of natural beauty to any space. Living walls improve air quality by filtering harmful pollutants and releasing oxygen. Living walls can reduce noise levels by absorbing and diffusing sound waves. They also help regulate temperature and humidity, creating a more comfortable microclimate. Studies have shown that living walls can also reduce stress and increase creativity.

What types of plants are suitable for living walls?

A wide range of plants can be used for living walls, depending on factors such as light availability, climate, and desired aesthetics. Some popular choices include ferns, succulents, herbs, and trailing vines. These plants are often selected for their ability to thrive in vertical environments, their low maintenance requirements, and their adaptability to varying light conditions. It's essential to consider the specific needs of the plants and ensure they are compatible with the intended location and environmental conditions of the living wall.

Etsy Headquarters, Brooklyn
Photo: Gensler

How do you maintain a living wall?

Proper maintenance is crucial to ensure the health and longevity of a living wall. Regular tasks include watering, fertilizing, pruning, and monitoring for pests or diseases. Irrigation systems can be automated to ensure plants receive adequate water, but periodic manual watering might also be necessary. Fertilization is typically done with slow-release fertilizers or organic alternatives. Pruning helps control plant growth and maintain the desired shape and appearance of the living wall. Hiring plant professionals is recommended to ensure the plants are thriving.

Sydney Office, Australia
Photo: Niche Projects

Can living walls be installed indoors?

Yes, living walls can be successfully installed indoors, bringing nature into interior spaces has never been easier. Indoor living walls can help improve indoor air quality by removing pollutants and increasing humidity levels. Special considerations are needed for indoor installations, such as ensuring adequate lighting conditions for the plants and implementing proper irrigation systems. Additionally, selecting plants that thrive in the conditions of your home is important for successful indoor living walls.

Are living walls sustainable?

Living walls are considered sustainable due to the numerous environmental benefits they offer. They contribute to improved air quality, reduce energy consumption by providing insulation, and promote biodiversity in urban areas. Living walls can also help mitigate the urban heat island effect by cooling surrounding areas through evapotranspiration. The use of locally sourced and eco-friendly materials in their construction adds to their sustainability.

What is the lifespan of a living wall?

The average lifespan of a living wall can vary depending on various factors, such as the quality of installation, plant selection, maintenance practices, and environmental conditions. With proper care and maintenance, a well-designed and well-maintained living wall can last for several years. Some living walls have been known to thrive for a decade or more. However, it is important to note that living walls are living ecosystems, and individual plant health can vary. Over time, certain plants may require replacement or rejuvenation to ensure the overall vitality and aesthetics of the living wall. Regular monitoring, timely pruning, appropriate watering, and periodic plant replacements can help extend the lifespan of a living wall and keep it vibrant and healthy for many years.

Are living walls suitable for all climates?

While living walls can be adapted to various climates, their suitability may vary depending on the specific conditions of each climate. However, advancements in plant selection and technology have allowed for the development of living walls that can withstand a broader range of climates. Innovative irrigation systems, such as drip irrigation or recirculating hydroponic systems, can help regulate water supply and prevent waterlogging or drought stress. In regions with extreme temperatures, insulated backing and thermal barriers can be incorporated into the living wall design to protect the plants. Consulting with experts in living wall design and local horticulturists can ensure the selection of suitable plant species and the implementation of appropriate strategies to make living walls viable in a wide range of climates.

Will a living wall damage my wall?

When properly designed and installed, living walls should not cause damage to the underlying wall structure. Professional installation teams take precautions to protect the existing wall by using specialized mounting systems that distribute the weight of the living wall evenly. These systems often incorporate vertical frames, panels, or trays that securely hold the plants and growing medium, minimizing direct contact with the wall surface. Moisture barriers are typically used to prevent water from seeping into the wall and causing damage. It is important to consult with experienced professionals and ensure proper installation techniques are followed to mitigate any potential risks. Regular maintenance and inspections can help identify and address any issues promptly, ensuring the long-term health of both the living wall and the supporting structure.

How much space is required for a living wall?

The space required for a living wall can vary depending on the desired size and complexity of the installation. Living walls can be customized to fit a range of spaces, from small vertical panels to expansive installations covering entire walls. For smaller living walls, a few square feet of wall space may be sufficient. These compact installations are suitable for indoor environments or areas with limited space. Larger living walls, often found in outdoor settings or commercial spaces, can occupy several hundred square feet or more. It's important to consider factors such as available light, access to water sources, and structural support when determining the appropriate space for a living wall. Working with a professional designer can help ensure that the chosen space is suitable and maximizes the visual impact and functionality of the living wall

How much does a living wall cost?

The final price tag hinges on various considerations, including specific design requirements and environmental conditions. Factors such as the size of the wall, the selection of plants, the irrigation system needed, and the type of plant wall support system all contribute to the overall cost. Additional requirements, such as lighting and signage, can also impact the budget. As a general guideline, the cost of living plant walls typically starts at around $175 per square foot. It's important to keep in mind that each project is unique and may require a tailored approach to determine the precise cost.

Are there alternatives to a living plant wall?

There are several alternatives available that can offer similar aesthetic appeal and functionality. One popular option is moss walls, which consist of preserved or artificial mosses arranged on the wall. Moss walls provide a natural and textured look, require minimal maintenance, and can thrive in low-light environments. Another alternative is faux walls, which utilize artificial plants or foliage to create a green wall effect. These synthetic options provide a realistic appearance, require no watering or maintenance, and are suitable for spaces with limited natural light. Planter walls are another alternative, featuring a series of individual planters mounted on a wall. This allows for a versatile and customizable approach, as each planter can house different plant species and can be rearranged as desired. Planter walls offer the flexibility to easily change and replace plants as needed.