Soil for perennial plants

Discover our soils and their use.


HUMUSUN Substrato 3 Piante Perenni is specifically developed for long-cycle cultivation in pots ranging from 17 cm in diameter to large containers. It has a free porosity of 91% v/v and a water retention of 60% pF1. It has a pH of 5.5 and is provided with a balanced fertilization of microelements (iron, boron, copper, zinc, magnesium, manganese, molybdenum) and macroelements (nitrogen, phosphorus, potassium), available to be released. The total conductivity is 50 mS/m. The raw materials used are: 

  • Pumice with a grain size of 6/14 mm ensures higher drainage and more free porosity compared to HUMUSUN Substrato 2. Its special physical structure gives it an internal microporosity that makes it the only rock able to float on water. This ensures proper water drainage by storing the needed amount and it also improves air circulation and root oxygenation. 
  • High quality Blond peat 20/40 mm which allows a better air circulation and optimal water drainage in the substrate, drastically reducing the occurrence of diseases such as root and collar rot. 
  • Long Fibre Coco, used in the same perspective as mentioned above. It has a higher resistance to decomposition than peat, remaining intact for a longer time during the growing process. 
  • Zeolite – Chabasite, is an element of natural origin contained in volcanic granules that has the property of improving the ability to retain nutrients and release them at a rate over time. Basically, this characteristic limits the leaching of nutrients during the course of the crop, encouraging their slow release. It is also known to neutralise both toxic substances and radionuclides. It is used to purify water and reclaim polluted land. It was also used on a large scale at Chernobyl to decontaminate and protect against radiation. 

The raw materials chosen for HUMUSUN Substrato 3 are aimed at ensuring that the plant has well-balanced solid, liquid and gas phases. In the case of plants with a long growing cycle, well-balanced phases are even more important and decisive for the success of the crop, as they must remain appropriate for the entire duration of the growing cycle. It is possible to correct the chemical composition with appropriate measures, but it is practically impossible to change the physical characteristics during the course of the crop. 

Furthermore, the use of Zeolites gives to HUMUSUN Substrato 3 that extra edge which makes it unique among crop substrates. 

Particularly suitable for the cultivation of Cyclamens, Poinsettias and long cycle plants. In outdoor nurseries this product is used in pots with a diameter of more than 17 cm. 

It is supplied in bulk, in 5,000 litre Jumbopacks, in 3,000 litre Big Bags and in 70 litre bags.