Manufactures cement-free greening stones and implements the de-sealing and greening of house-edge strips in cities.

Endless Garden

Stuttgart (DE)New on Amplifa

StuttgartLocation

About Endless Garden

Endless Garden develops and produces greening stones for the de-sealing and greening of house-edge strips along sidewalks, driveways and squares. The paving stones are made using geopolymer technology: the concrete is cement-free, reuses construction rubble and, according to the manufacturer, emits around 80% less CO2 than conventional concrete. The product range comprises sizes S1 (10 × 25 × 25 cm) and S2 to S6 (each 8 × 25 × 25 cm) for different plant species, from mosses and cushion plants to small shrubs. The service offering ranges from consulting and feasibility assessment (comparable to a pre-building enquiry) via an on-site appointment and quotation through to implementation including de-sealing, substructure, installation of the stones and soil treatment with biochar. The stones are low-maintenance, durable and can be removed at any time. Initial implementations are taking place in Stuttgart, funded by the Stuttgart Climate Innovation Fund; there, the first pavement in Germany with a permanent city permit for redesigning the house-edge strip was realized. Target groups are municipalities, private property owners as well as businesses and institutions such as shops and houses.

Site: Stuttgart
Processes: Production of greening stones (paving stone using GEOPOLYMER technology, cement-free concrete), De-sealing and greening of house-edge strips (substructure and installation of the greening stones,, De-sealing and greening of house-edge strips, Production/installation of greening stones (pavement), Consulting/feasibility assessment (comparable to a pre-building enquiry), On-site appointment/initial consultation, Quotation preparation, Implementation including substructure, soil treatment with biochar
Materials: Geopolymer concrete (cement-free, reuses construction rubble, 80% less CO2), Greening stone S1 (10 cm × 25 cm × 25 cm), Greening stone S2.2 (8 cm × 25 cm × 25 cm), Greening stone S2.3 (8 cm × 25 cm × 25 cm), Greening stone S2.4 (8 cm × 25 cm × 25 cm), Greening stone S2.5 (8 cm × 25 cm × 25 cm), Greening stone S3 (8 cm × 25 cm × 25 cm), Biochar (for soil treatment)
Certificates: City permit (Stuttgart), Data sheets per size (S1–S6)
Industries: Urban greenery/sponge city, Urban planning/municipalities, Private property owners, Businesses/institutions (shops, houses, institutions)

01
Consulting/feasibility assessment (comparable to a pre-building enquiry)
02
Enquiry and permitting
03
On-site appointment/initial consultation
04
Quotation preparation
05
Production of the greening stones (geopolymer concrete)
06
De-sealing and substructure
07
Installation of the greening stones
08
Soil treatment with biochar

Materials and Processes

Geopolymer concrete

Cement-free concrete using geopolymer technology, which reuses construction rubble and, according to the manufacturer, emits 80% less CO2.

Greening stone S1 (10 × 25 × 25 cm)

For mosses, grasses, cushion plants and small-flowered species with a very low maintenance level.

Greening stone S2 (8 × 25 × 25 cm)

For rock garden plants, cushion perennials and robust ground covers with a very low maintenance level.

Greening stone S3 (8 × 25 × 25 cm)

For Mediterranean herbs, small perennials and medium-sized plants with a low maintenance level.

Biochar

Used during implementation to treat the soil in the substructure.

Locations

Stuttgart

Project location and market

Part weight / size: Component size max. 10 × 25 × 25 cm
Lot size: Individual projects and linear meters (run)
Materials: Geopolymer concrete, biochar

Greening Stones

**Greening stone S3**Geopolymer concrete · Urban greenery/sponge city

**Greening stone S4**Geopolymer concrete · Urban greenery/sponge city

**Greening stone S5**Geopolymer concrete · Urban greenery/sponge city

**Greening stone S6**Geopolymer concrete · Urban greenery/sponge city

Inside the production

Process step: Substructure and installation

Industries

Urban greenery/sponge cityUrban planning/municipalitiesPrivate property ownersBusinesses/institutions (shops, houses, institutions)

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
Production of greening stones (paving stone using GEOPOLYMER technology, cement-free concrete)Casting	–	25 cm × 25 cm × 10 cm (S1) / 8 cm (S2–S3)	–	–	Geopolymer concrete (cement-free, with construction rubble)
De-sealing and greening of house-edge strips (substructure and installation of the greening stones,Assembly	–	–	–	–	–

Additional services

De-sealing and greening of house-edge stripsProduction/installation of greening stones (pavement)Consulting/feasibility assessment (comparable to a pre-building enquiry)On-site appointment/initial consultationQuotation preparationImplementation including substructure, soil treatment with biochar

Reference customers

City of Stuttgart (funding via the Stuttgart Climate Innovation Fund)

Quality

The greening stones are installed as pavement with a permanent city permit in Stuttgart and are low-maintenance, durable and removable; individual test standards or certifications are not documented.

Evidence	Stuttgart
City permit (Stuttgart)
Data sheets per size (S1–S6)

History

First pavement in Germany with a permanent city permit for redesigning the house-edge strip into green areas (Stuttgart)
The Stuttgart Climate Innovation Fund supports the first 400 linear meters with 50% of the investment costs