Commitment to Sustainability: Maanlumo Chooses Leca® for Landscape Architecture

In an ever-evolving construction and urban landscaping sector, Finnish firm Maanlumo stands out for its strong commitment to environmental, social, and economic responsibility. Their choice to use Leca® Lightweight Aggregate (LWA) in growing media for rooftop gardens highlights their ethical and sustainable approach to urban design.

Designing with Environmental Awareness

Krista Muurinen, a landscape architect at Maanlumo, emphasizes that the company takes a holistic approach that goes beyond monetary value. “We design with respect for nature and an environment that remains accessible to all,” she says. Every project must benefit not only people but also urban nature and wildlife.

Beyond Greenwashing

In an industry where sustainability is often used as a marketing strategy, Maanlumo stands apart by backing up words with real actions. Every design decision, material choice, and supplier is evaluated through an ethical lens. “Our mission is to design long-lasting outdoor environments, and we want to be able to fully and proudly stand behind our work,” says Muurinen.

Materials That Make a Difference

Maanlumo prioritizes recyclable, long-life, and locally sourced materials. Leca® LWA has become a preferred solution due to its excellent water retention, transparent production process, and verified carbon footprint. Being manufactured in Europe also helps reduce transport distances and supports local economies.

Although Muurinen is interested in learning more about the long-term reusability of Leca® LWA, she highlights positive examples such as the transformation of reclamation sites into nature reserves in Finland and Denmark as meaningful initiatives companies can be proud of.

Ethics as a Competitive Advantage

Maanlumo believes that ethical operations also provide a competitive edge. Circular economy values and respect for nature resonate with end users, even if they can’t be measured in financial terms. “Saving five trees or a natural rock formation can’t be priced, but it holds great value for users,” Muurinen points out.

Projects like the Ranta-Tampella development in Tampere show how circular economy principles can be successfully integrated into urban construction. Maanlumo hopes more cities will follow suit.

A Daily Commitment

For Maanlumo, acting responsibly isn’t just a trend—it’s a way of life. “Maybe we can’t do something big every day, but small actions are always possible—and over time, they add up to something significant,” Muurinen concludes.