Recommended green roof growing medium parameter ranges
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 (mg/L) | 1 to 4 | 2 to 32 |
| Ammonium (mg/L) | 0.1 to 0.8 | 0.1 to 0.8 |
| Nitrogen (mg/L) | 2 to 8 | 2 to 32 |
| Phosphorus (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 |