Certification for potting soil, fertiliser in the home and garden sector, and for seeds
Various criteria are taken into account when it comes to potting soil, fertilizers, and seeds. These include, among others, the fill quantity, pH value, plant compatibility, and germination capacity.
DLG test criteria for potting soil and fertiliser for home and garden use, seeds
Potting soil, bark mulch, bark humus
Verification of labelling
Nutrients
Weight by volume, filling quantity
pH value
Salinity
Plant compatibility
Organic substance
Foreign substances
Content of heavy metals and pollutants
Human pathogenic germs
Weed test
Plant fertiliser
Verification of labelling
Nutrient content
Content of heavy metals and pollutants
Seeds
Filling weight
Purity
Germinating capacity
DLG-certified quality
The DLG quality seal stands for tested agricultural inputs. Regular testing ensures consistent quality. Special features or innovations can also be independently verified – visibly indicated directly on the certification mark.
