Industrial hemp is a different strain of Cannabis Sativa containing very little of the psychoactive substance found in marijuana. You simply cannot get high on industrial hemp. See this blog for more explanation.
Hemp is a genetically diverse species, with varieties adapted to a wide range of latitudes and climatic zones. It is a summer annual, short-day flowering plant, with 2-3 crops per year in some areas of Australia. The fibre of the hemp plant comes from the stalk, which is comprised of bast (the outer bark fraction of the stem) and the hurd (which is the inner woody core). Hemp as a fibre crop grows over the peak of summer, typically a 100-120 day crop harvested in January and February. It is a low cost crop, with minimal infield operations post planting. A grower requires an appropriate state licence or permit to grow industrial hemp. (HEMPCO.)
Hemp is far more productive than typical agro-forestry projects, producing annual, versatile biomass alongside more rapid CO2 uptake. It can produce a vast range of sustainable raw materials with an overall low environmental impact, as well as improving soil structure, using low fertiliser and no other chemical inputs (i.e. reduced agrochemical residues).
Hemp can be grown on existing agricultural land (unlike most forestry projects), and can be included as part of a farm’s crop rotation with positive effects on overall yields of follow on crops. This, along with super versatility in diverse soil conditions and climates, makes hemp cultivation a viable and genuine potential large scale contributor to GHG mitigation. (www.hempglobalsolutions.com/science2.php)
It is estimated that hemp cropping will sequester an average of 10 tonnes of carbon dioxide per hectare. (www.hempglobalsolutions.com/science2.php
The mixture of hemp shiv and a lime-based binder with the addition of water produces a bio-composite material often called hemp-lime . As with the early use of hemp within concrete, in hemp-lime the shiv performs as a lightweight aggregate and the lime as binder and preservative. This composite material is rigid, lightweight and durable, while achieving high levels of thermal insulation and vapour permeability.
Lime’s unique chemical and physical properties are ideal for its combination with hemp. Throughout the lime’s curing process it retains a high permeability which allows vapour to migrate through the composite, therefore allowing the hemp chips to dry out completely. This coupled with the lime’s alkalinity, acting as a natural biocide, ensures the hemp shiv is safe from mould and bacterial attack.