Use of Stinging Nettle as a Potential Organic Fertilizer for Herbs

Abstract

Experiments were conducted to compare the responses of 4 greenhouse grown herbs to the aqueous extracts and ground leaf material of stinging nettle, Urtica dioica L., as compared with 3 standard organic fertilizers and 1 inorganic fertilizer incorporated into the growth media. Stinging nettle leaf extract and organic fertilizer significantly increased the growth of French tarragon and purple coneflower. Ammonium sulfate produced the most growth in sweet basil. Stinging nettle leaves applied as a dry powder at 16 g/l of soil produced the most growth in parsley. The results indicate stinging nettle, a nitrophilic weed, has the potential to be used as an organic fertilizer to replace other conventional fertilizers.