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Recommended green roof growing medium parameter ranges
Link to this table
Parameter | Extensive green roofs | Intensive green roofs |
---|---|---|
pH | 6.5 to 7.8 | 6.5 to 7.8 |
Nitrate-N (mg/L) | 1 to 4 | 2 to 32 |
Ammonium-N (mg/L) | 0.1 to 0.8 | 0.1 to 0.8 |
Nitrogen (total) (mg/L) | 2 to 8 | 2 to 32 |
Phosphorus (total) (mg/L) | 2 to 10 | 2 to 15 |
Potassium (mg/L) | 8 to 32 | 8 to 64 |
Calcium (mg/L) | 100 to 300 | 100 to 300 |
Magnesium | 10 to 80 | 10 to 80 |
Iron (mg/L) | 8 to 32 | 8 to 32 |
Manganese | 1 to 8 | 1 to 8 |
Boron (mg/L) | 0.04 to 0.6 | 0.04 to 0.6 |
Sodium (mg/L) | <20 | <20 |
Zinc (mg/L) | 1 to 10 | 1 to 10 |
Soluble salts (mmhos/cm) | 0.4 to 1.2 | 0.4 to 1.2 |
Sodium Absorption Ratio (SAR) | <2 | <2 |