Hemp Benefits | Environmental

Nitrogen leeching

Hemp can remove or use a total of 200 actual kg/ha of nitrogen (1.). Its deep tap root 30cm – 200cm (2.) allows access to nutrients which are out of reach of typical pasture species. The long roots of the hemp plant help to bind soils and combat erosion.  Nitrogen leaching is one of the major environmental limitations of intensive agriculture in New Zealand.


Heard, J. 2001. Industrial hemp seed fertility. Summary of Manitpoba studies. In proceedings of 44th Annual Manitoba soil science meetings. Winnipeg. 2001. PP 180-185
Bócsa, I. & M. Karus. 1998. The cultivation of hemp: Botany, varieties, cultivation and harvesting. (translated by Chris Filben) Hemptech, Sebastopol.

    Carbon absorption

    Industrial hemp has been scientifically proven to absorb more CO2 per hectare than any forest or commercial crop and is therefore the best natural carbon sink. One hectare of industrial hemp can absorb up to 22 tonnes of CO2 in 120 days compared to a Radiata pine plantation which can absorb between 15 - 26 tonnes of CO2/ha in 12 months.

    Hemp's rapid growth (grows up to 4 metres in 120 days) makes it one of the fastest CO2-to-biomass conversion tools available, more efficient than agro-forestry. Industrial hemp is unmatched as a means of sequestering Carbon Dioxide


    Roger M Gifford (2000) Carbon Content of Woody Roots, Technical Report N.7,

    Soil benefits

    Hemp grows in diverse soil types and conditions without the need for chemical inputs and improves soil structure while also protecting and binding soil.

    It also destroys nematodes and other soil pests, resulting in improved yields of follow on crops. Hemp cleans toxins from the ground by a process called phytoremediation. 

    This is a plant that will revive depleted soils, mitigate the effects of climate change, and re-establish the desperately needed balance between humans and the environment.