Recommended green roof growing medium parameter ranges Revision as of 21:23, 3 August 2022 by Mtrojan (talk | contribs)(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff) Recommended green roof growing medium parameter ranges

Recommended green roof growing medium parameter ranges
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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