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 Posidonia seagrass organic compost

Quality excellent A+
Posidonia@ derives from the biological fermentation of sea plant "Posidonia oceanica"  (using dead leaves, washed up on touristic  beaches) and selected products of agriculture (olive core, olive leaves, grape skin), without any chemical addition or process

The product is a matured peat-free compost made from composted sea grass "Posidonia oceanica". Graded particles are no larger than 15 mm with a substantial amount of organic fines, pH to be around 7 to 7.5. The product is free of physical contaminants, viable weed seeds and pathogens and shall be untreated by any additives. Is the nature's traditional compost, an excellent peat-free soil improver

 Very clean compost

Very low content in heavy metals ( consequence in can be used in higher ratios per 1000 m2 )
All raw materials come from non- industrialized areas of Greece (Kefalonia island, Kyparissia bay and Marathon) with total absence of acid rain and air pollutions . 100% of the sea grass (species "Posidonia oceanica") origin shores have acquired a BLUE FLAG eco- label for beaches and marines


Sea grass constitutes 80% of raw materias used

High content in nutrients and increased stimulating properties in plant growth  


 Long period treatment in order to reach full maturation
Numerus benefits for the plants:
a.  Non phototoxicity
b.  High concentration of humic and fulvic acids

No burning
The fact that the product comes from the open windrow composting process (aerobic fermentation) is demostrated by its dark brown color (instead of carbon- black color which is the result of burning), its characteristic texture and its natural earth odor

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 Quality Approval

 Austrian Kompost - Entwicklung & Beratung ( Dipl-Ing Florian Amlinger- Technisches Büro für Landwirtschaft, UID ATU43789600,ECN EUROPEAN COMPOST NETWORK)


The product has been approved from the Austrian company as a product that its quality fills all the criteria as an A+ quality according to the Austrian, German and European direction.


 Certification by D.I.O. (National Organization for the Certification and Control of Organic Products). Procedures and raw materials utilized for the production of POSIDONIA® are in accordance with requirements and regulations of the E.U. (2092/91/appendix II/Part A) which refers to fertilizers and soil improvers that are allowed to use in organic farming.


 Ecological Product Award 

The Panhellenic Association of Environment Enterprises (PASEPPE) under the auspices of the Hellenic Federation of Enterprises (SEV) and with the support of the Union of Hellenic Chambers gave our company the 3rd AWARD FOR ECOLOGICAL PRODUCTS 2005-2006 within the framework of the candidacy for the competition of innovative products for the environmental protection in the European Union.

Particle Size Distribution (sieve analysis) 

No larger than 15 mm screen
Bulk density           ~0.55 - 0.60 kg /lt     

Moisture content      25% - 30% m/m

Dry matter                 47%- 55% m/m

Organic matter (as loss on ignition)  

 25%- 35% of the dry matter

Carbon:Nitrogen ratio   18- 25

pH    7 - 7.5

Electrical conductivity    0.50 - 2.50 mS/cm

Absolutely free of physical contaminants and pathogens free from viable weed seeds

Potentially toxic elements ("heavy metals")

Within acceptable limits for Organic Cultivation Law EC2092/91

Typical information
Nutrients & Microminerals

(N):                  0.80 - 1% 

(P2O5):           0.32 - 0.50%   
(K2O):             0.90 - 1%  
(CaO):                28 - 33%  
(MgO):                 2 - 3%


Copper (Cu)             > 15 ppm
Manganese (Mn)     > 450 ppm
Iron (Fe)                   > 3500 ppm
Zinc (Zn)                  > 70 ppm
Boron (B)                 > 650 ppm


* Due to the biological nature of POSIDONIA®

there is divergence in the values

Compost Hellas’s high specification compost product have a wide variety of benefits and is suitable for agriculture, horticulture and landscaping.

Most gardeners and farmers are aware of the benefits of applying compost to soil with advantageous levels of potassium, nitrogen and phosphorous which are naturally produced by micro-organisms in the compost.

When used in agriculture, these help to enhance crop yield.


As an ideal natural soil improver, Compost Hellas’s compost offers the following benefits:

•    Improved structure & texture
•    Increased moisture retention
•    Improved aeration
•    Increased nutrient value
•    Improved fertility in tired or un-worked soils
•    Loosens clay soils
•    Stimulates healthy root development

Benefits of compost Posidonia

Application rate

Application of POSIDONIA® during planting of young trees or plants and throughout their life-circle, offers a good store of organic matter and contributes to their well-balanced growth because its properties act accumulatively


Pot- plants & containers

Pot-plants and containers:

•When planting new pots mix in an one POSIDONIA® to two or three soil ratio
•On already installed pots add POSIDONIA® as a top dressing (2-4 cm layer) two or three times a year


• When planting dig appropriately sized holes and mix in a one POSIDONIA® to two soil ratio

• On already installed trees use at least 20 lt (age up to 10 years) or  40lt (age at least 10 years) POSIDONIA® on the soil under tree’s foliage as mulch or work gently into the surface





When planting in a pot or jardinières (tomatoes / cucumbers / peppers)

Dig holes, add (2-3lt) Compost Hellas Posidonia® mix with  soil in a ratio of approximately one to one, stir well and plant

In beets: (lettuce / onion / celery / parsley / greens)

Spread 80 lt Compost Hellas Posidonia® in 10 m², scratch lightly on top to mix with soil and plant the new seedlings at a distance (10-15cm)(depending on cultivation) or sow the seeds

In existing plants:

We use   Compost Hellas Posidonia® surface,  around the stem of the plant (perimeter)


• When installing new vinery mix 2lt POSIDONIA® well with soil per plant
• On installed vineries use 8-12lt POSIDONIA® per vine as mulch



Seedlings and young plants:
•    Mix in a one POSIDONIA®, two soil, half perlite or pumice and one sand ratio. Keep blend slightly moist for 15-30 days and then sow or plant seedlings


Agricultural crops

  • Production of edible products:  Every year we apply 1 big bag  of compost Posidonia® for each hectare, over the entire surface or in the  planting lines.

  • Production of non-food products: Every three years, we apply 4 big bags of compost Posidonia® per hectare.


 Lawn laying: Gently work POSIDONIA® into the surface (at least 100 lt per 50 m2) when preparing the ground
 Lawns: Scatter 4-8 handfuls of POSIDONIA® per m2 once or twice a year for maintenance


                 Ιδανικά  Προϊόντα για την Βιολογική & Συμβατική Γεωργία, Κηπευτική & Ανθοκομική

                                                Εμπλουτίζουν με Θρεπτικά &  Αναζωογονούν το Έδαφος



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