The global impact of biodiver.city
Success stories from France, Greece and Kenya
Stories that bring life
Biodiver.City’s global presence underscores our commitment to regenerating ecosystems. From the traditional vineyards of France and the sun-drenched landscapes of Greece to the challenging soils of Kenya, our Terrawell® formula has brought lasting change to land and life.
Soil restoration
Left: A fairway in spring before using Terrawell® products; visible soil damage, including from winter use as a cross-country ski track (and resulting factors like wax residues, track machines, etc.)
Middle: The same fairway a little later after a single Terrawell® Classic application.
Right: An almost fully recovered and regenerated fairway after two applications of Terrawell® Classic.
Uninterrupted Swimming Fun
A heavily clouded swimming pond at a hotel resort was treated with 10 liters of Terrawell® Classic —without having to close the swimming area at all. After just 3–5 weeks, the water was visibly clearer and organic deposits were significantly reduced.
The natural microorganisms in Terrawell® break down organic matter sustainably and improve water quality in a gentle manner.
The result: minimal effort for the operator and a well-maintained swimming pond where guests feel completely at ease.
Dry Summer
In a region with only about 400 mm of annual precipitation, Terrawell® Classic was tested under particularly dry conditions. Three different planting strips of steppe grass were established on nearly identical soil:
1x the grass alone
1x with the addition of 60 l/ha of Terrawell® Classic
1x with the addition of 60 l/ha Terrawell® Classic in combination with a fertilizer.
After just eight weeks, the two planting strips treated with Terrawell® Classic - as well as the one treated with the combination of Terrawell® and fertilizer - showed visibly improved growth.
In both cases, the steppe grass appeared significantly more vigorous, and the vegetation was visibly denser than in the untreated planting strip.
This is impressive real-world evidence of the potential of biological soil activation - even under challenging site conditions with extreme drought.
Putting green restoration
The soil samples above were taken under the same climatic conditions in exactly the same spot:
Before: Clearly visible waterlogging due to black layer formation and barely noticeable root growth.
After: Thanks to soil treatment with Terrawell® products: complete dissolution of the black layer and a clearly visible, dense root system.
From scarcity to abundance
Despite challenging conditions, the sandy and saline soils of Mombasa were revitalized with a mixture of organic material and Terrawell® Classic.
The result? Extensive, lush areas of vetiver and kikuyu grass transforming once-barren land into blooming meadows. A local archbishop summed it up well: our work is like “breathing life into dry bones.” These words capture the essence of our mission.
Reducing replantings
Damaged pines in Munich sprouted again after applying Terrawell® Classic.
Terrawell® products were also used successfully when planting new trees in downtown Munich – reducing plant loss from 7–10% the previous year to just 1.5%.
Natural efficiency meets soil health.
Alpine soil restoration for ski slopes
At 1,350 m elevation, microbial biomass developed impressively within just one year through applying a mixture of organic material and Terrawell® Classic. Over this period, biomass rose from 272 µgC/g with a ratio of 34% fungi and 66% bacteria to 1612 µgC/g, with fungi increasing to 79% and bacteria decreasing to 21% at a depth of 10 cm.
New life for peach trees
In the picturesque orchards of Brittany, our work helped young trees affected by peach rot to recover. Just three months after application, these trees stand as a symbol of nature’s resilience and the transformative power of Terrawell® Classic.
The maize experiment
Four maize plants were potted at the same time, under the same climatic conditions, in identical containers – but the substrate in each pot could not be more different.
Even visually it’s clear: Terrawell® Classic combined with the appropriate fertilizer guarantees the ideal basis for growth and plant well-being.
Goodbye algae in standing water
In a self-initiated trial, SE-Bau Landschaftsbau GmbH treated its own pond with Terrawell® Classic. As a result of the introduced microorganisms, after around 30 (!!) days there were hardly any algae left, but a clearly improved water quality that allows a clear view to the bottom of the pond. All natural, without chemicals.