Green Wall and Rooftop Gardening

Green Wall and Rooftop Gardening

From ancestorial times greening of outside walls and roofs of buildings has taken place for environmental harmony. Societies are in a need for making a conscious choice to switch to a more sustainable way of life. 

The reason for doing so was the increase of insulation, improved aesthetic value, enhance indoor and outdoor climate, reduce greenhouse gases as well as increased ecological values by creating habitat for birds and insects. The green roof provides shade, removes heat from the air, reduces the temperature of the roof surface, and improves surrounding health. It is also seen that doctors are increasingly prescribing for spending time gardening to patients dealing with anxiety and depression. Spending time gardening can provide mental peace. Green walls feel the soul with joy. Green encourages a balance in your brain that leads to decisiveness. People can also get organic vegetables by growing them on the roofs of buildings.

Urban Gardening:

Urban Gardening is a practice through which people grow plants and crops in and around the cities in urban and peri-urban localities. Urban gardening is where people practice cultivation, mainly of vegetables, and flowers in and around urban areas. Basically, it is the traditional cultivation of crops, but in urban centers. With urbanization and since more and more people would like to do their farming where they are, urban gardening is considerably been taken up and has been a successful alternative; a shift from the traditional thinking that cultivation of crops can only be done in rural areas. Urban gardening is hence a venture that helps urban communities in social, economic, and healthy ways of living, by stimulating the local economy and also serves as an effective means of securing a family’s food security.


Green walls are partially or fully wall-embedded vertical gardens. It is a vertical structure built against an existing wall, both on the interior and exterior of the building. One of the most significant benefits of a green wall is to improve the quality of your indoor air. Approximately 25% of carbon emissions made by human activity are absorbed by plants and living walls. Plants on the wall filter toxins in the air and convert carbon dioxide to oxygen. Green walls are the living walls of the house. The structure is attached to the existing wall at various points and then planted with lots of beautiful greenery. These greeneries are planted in a medium such as soil, vermiculite, perlite, cocopeat, rock wools, or water. 

Types of Green Walls

1. Wall climbing green wall- It is a very common and traditional green wall method. Although it is a time-consuming process, climbing plants can cover the walls of the building naturally.

2. Hanging down green wall - The hanging down type is also another popular approach for green walls. It can easily form a complete vertical belt on a multistorey building through planting at every story compared to the wall climbing type.

3. Module type green wall- The module type is the latest concept compared to the previous two types. It requires a more complicated design and it is probably the most expensive green walls method. 

Benefits of Green Walls

·         Living green walls purify the air.

·         Green walls increase the feeling of well-being.

·         A living green wall reduces the ambient temperature.

·         Reduces ambient noise.

·         Green walls reduce stress.

·         Green places show a longer residence time.

·         Living walls offer a powerful healing environment.


The rooftop garden is a garden on the roof of the building. Besides the decorative benefit, roof planting provides food, control temperature, hydrological benefits, architectural enhancement, habitats or corridors for wildlife, recreational opportunities, and on a large scale it may even have ecological benefits. Rooftop gardens are man-made green spaces on the topmost levels of industrial, commercial, and residential structures. They may be designed to grow to produce, provide play space, give shade and shelter, or simply be there as a living green area. Rooftop gardening comes with a plethora of advantages like sustainable production, decreasing family monthly investment, improving the quality of air in the roof, and providing healthy nutritious vegetables straight from roof to plates.

Types of Roof Top Gardening-

1. Extensive green roof- It is a low-maintenance green roof garden that has a thin, lightweight growing medium. This type of green roof is characterized by its vegetation, which is often limited to sedums, mosses, herbs, small plants and flowers, dessert grasses, and succulents because it has a growing medium depth of around 3-6 inches, an extensive green roof is easier to install and cost-efficient and generally does not require an irrigation system to survive. It is ideal for stormwater management for flat or low-sloped roofs and retrofits.

2. Semi-intensive green roof- It is a mix of both intensive and extensive green roofs. It is characterized by a growing medium depth of around 6-12 inches to host a much richer ecology. Greenery in this type of rooftop garden consists of small plants, grasses, herbs, small shrubs, and ground covers that require occasional irrigation and moderate maintenance.

3. Intensive green roof- It is more of a rooftop garden or sky park than anything else. This roof garden design is characterized by deep soils that have a growing medium depth of more than 6 inches, A variety of vegetation can be grown in an intensive roof garden, from small to large plants, shrubs, ground covers, and even small trees.

Benefits of rooftop garden-

·         It reduces the heat of buildings and energy costs.

·         It creates a habitat for wildlife.

·         It reduces ambient temperature.

·         It captures and harvests rainwater.


“The greener the setting the more the relief”. We call this our “Balanced flow” because the living walls will give you the peace and harmony that you need to continue with your day! Whether you pause to look at it and breathe in the green or just pass by it on the way, you will feel a sense of relief. 

Authors: Kajal Jaiswal and S. Mishra (IAS, SOADU) by subhrajyoti's horticulture

Hello friends, I'am Dr. Subhrajyoti , from Odisha, India. I have completed my UG & PG from OUAT and Ph.D. from JAU. During my early year of teaching, I loved to provide important information to the young agriculturists and farmers. With the suggestions from my best friend Mr. S. R. Biswal, (Ph.D. Research Scholar; website designer & content editor of (blog &YouTube), I got interested to create such an amazing platform, where I can share my knowledge to a greater range of audience and also get enriched with new ideas and knowledge. I feel privileged to be in contact with you all. I would like to thank you all for your valuable support and encouragement through viewing my articles. I will always try my best to provide the quality and latest information on this website. Thank you….

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