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Green city – Concrete solutions for municipalities and cities to achieve climate goals 

September 26, 2025

Municipal operations continuously generate organic waste and by-products (such as raking waste and soil masses), but not all areas have effective methods for utilising them. These materials often end up being stockpiled, while the use of virgin raw materials incurs costs. 

Operating in line with sustainable development is a challenge that all stakeholders in the green sector must commit to. The green sector faces numerous international, national, and local challenges, including climate change, loss of biodiversity, destruction of habitats, and urbanisation. These complex challenges require the integration of various areas of expertise and collaboration. 

Promoting material efficiency in green construction 

Promoting material efficiency places demands on stakeholders in the green construction sector. Principles and actions related to the production, selection, and recycling of raw materials, materials, and products encourage: 

  • Conservation of virgin natural resources 
  • Efficient material utilisation 
  • Increased reuse and recycling 
  • Waste reduction and minimisation of harmful effects 
  • Improved sorting and recycling of waste 
  • “Zero-waste” construction sites 
  • Avoidance of landfill disposal 
  • Use of durable, high-quality materials 
  • Reduction in new material usage 
  • Lower energy consumption in logistics 
  • Reduced transport costs 
  • Lower greenhouse gas emissions 
  • Enhanced nutrient cycling 

 

A landscaping project owner plays a crucial role in advancing sustainable development 

The projetc owner is a key player in promoting sustainable development in environmental construction projects. Without the client’s commitment, these projects cannot be comprehensively implemented in a sustainable manner. The projectowner sets the project’s objectives. If sustainability is not included in these objectives, it will not be incorporated during the design, construction, or maintenance phases. Procurement criteria must be defined and tendering conducted fairly based on ecological principles. 

 

10 Things you should know about sustainable growing media 

Sustainable growing media are a central part of ecological green construction, and their selection and composition are influenced by many factors. What should you know about them? Sustainability is not just an eco-act—it’s about cost-efficiency and the wellbeing of the entire ecosystem and urban residents. 

Recycled materials
Sustainable growing media often contain recycled raw materials, such as compost or recycled aggregates, which reduce landfill waste and conserve natural resources. 

Water retention capacity
Growing media in sustainably built green areas are designed to retain water, reducing the need for irrigation and helping plants survive dry periods. 

Permeability
Growing media play a key role in stormwater management: permeable structures allow rainwater to infiltrate the ground and replenish groundwater reserves, reducing surface runoff and erosion. 

Soil health
Organic matter in sustainable growing media improves soil structure, supports beneficial microbial activity, and enhances nutrient availability. 

Carbon footprint
Using local (recycled) raw materials and suppliers helps reduce the overall emissions of construction projects. 

Conditions
Sustainable green construction increases urban greenery on multiple levels—walls, roofs, and deck structures. In Finland’s climate, these require specific considerations regarding the weight, structure, and transportability of growing media. It’s advisable to involve a growing media expert already in the planning phase of such projects. 

Reusability
Many soil materials can be reused or repurposed in other landscaping projects, extending their lifecycle and reducing waste. High-quality growing media made from the start have a long service life. 

Pest control
A healthy microbial community in the growing media can improve the soil ecosystem’s resistance to diseases and pests, reducing the need for chemical pesticides. 

Cost-efficiency
In the long term, investing in sustainable soil materials can lead to savings due to lower maintenance and irrigation needs. Expertly prepared growing media for green areas do not need to be replaced. 

Wellbeing
Healthy soil supports not only plants but also a wide range of micro-organisms, insects, birds, and mammals. Thriving urban greenery positively impacts human health as well. 

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