Cannabis sativa is an annual herbaceous flowering plant indigenous to eastern Asia but now of cosmopolitan distribution due to widespread cultivation. It has. The two major types of cannabis plants are Indica and Sativa. Each strain has it's own range of effects on the body and mind resulting in a wide range of. Aug 16, Cannabis sativa is one of the many species of cannabis. Learn more about this strand including health benefits, potency, and where it is most.
Is Sativa? What Cannabis
The perianth persists on the surface of the single seed achene. The fibres overlap in bundles containing from cells per bundle. Fibre bundles often run the entire length of plants. Approximately 25 bundles lie around stems, embedded in a ring of phloem parenchyma.
The morphological descriptions of the 'biotypes' presented below are adapted from work by Schultes et al. Cultivated for fibre, oil, and sometimes for drugs. Cultivated primarily for drugs but also used for fibre and oil. Plants small usually under 0. Plants short under 1. Cultivated for drugs, primarily hashish.
The exact origin of hemp and its cultivation are not very clear; however, both historians and archaeologists agree that hemp was one of the first non-food crops to be cultivated. It is thought that the plant probably originates from temperate central Asia. Authors from India favour an origin in the Himalayas, and Chinese authors propose sites along the Yangtze or Yellow rivers.
There is strong archaeological evidence of the widespread use of hemp in China as an economic crop by around BC. The vast majority of hemp fibre remains have been recovered from archaeological sites in China. The oldest written record of the use of hemp is a Chinese herbal from the third millennium BC, in which the medicinal use of hemp was described.
In a tomb in the Shaanxi Province of China in , archaeologists discovered a piece of paper containing hemp fibre, dated to —87 BC. This is considered to be the oldest piece of paper ever recovered. According to Vavilov, domestication of hemp probably occurred independently in several centres in northeast Asia around six millennia ago.
In Egypt, the presence of hashish was found in the body tissues of mummies, dating back to about BC. The Greeks and Romans used hemp for the production of rope and coarse fabric. They probably did not use it as a drug. During the s, servants from India carried seeds to Jamaica, and from here drug cultivation spread within the Gulf of Mexico. There is considerable evidence for the diffusion of hemp in Europe and the Middle East. From the 16th to the 18th centuries, hemp was an important fibre crop in Europe and North America.
Hemp production declined in the 19th and 20th centuries due to the large-scale cultivation of cotton, the advent of synthetic fibres and because the growing of hemp has been made illegal in many countries. Today the distribution of hempcultivation is poorly documented. Nova Institute Karus et al. A list of major centres of cultivation for a minor crop such as hemp, is liable to change and become out of date.
The drug cannabis, for instance, is grown almost globally the ODCCP cites countries , but few countries are consistent and have significant exportation.
The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report. Early vegetative growth is often slow, but later growth may be quite rapid.
Generally, canopy closure when leaves of adjacent plants mesh together and shade the soil occurs when fibre crops are approximately 50 cm in height.
Duke determined that optimal growth of C. It has a growth period of months, which is dependent on the latitude. Duke found that C. It flowers in the autumn, when the photoperiod drops below hours per day, depending on the variety and location. The plant is a nitrophile and requires much nutrients.
Fibre crops require high levels of nitrogen and potassium, and in descending order of importance calcium, phosphorous and magnesium.
However, seed crops extract less potassium and more phosphorous from the soil, and drug crops have a high demand for phosphorus Frank and Rosenthal, Duke suggests that a soil pH of 6.
Fibre The long, strong, mildew-resistant fibre in hemp was traditionally used for rope, sails, tarpaulin, canvas bags, and carpets. Fine yarn can be spun for clothing, handbags, and other textiles. The low lignin level present in hemp fibre and hurds make these materials ideal for production of paper, fibreboard, composite wood products; or may be mixed with lime to create reinforced concrete. The fibres also serve as a fibreglass substitute, for pressed insulation and moulded panels for the car industry.
Hempseed The seed is technically an achene, a small, dry nut. For example field-grown crops yield an average of g seeds per plant, or about 22, seeds per plant McPartland et al. Approximately one-third of hempseed is oil, which is used in lighting, lubrication, soaps, detergents and cosmetic creams. The fatty acids are quick drying and so hemp oil is useful for paints, varnishes and printing inks.
Hemp oil can also be burned as a fuel. In China, hempseed is commonly eaten, roasted or raw. Hemp oil contains a high percentage of essential fatty acids, it is therefore a valuable food supplement, and is useful in salad dressings and margarine. After the oil has been pressed out of the seed, the remaining seed cake is rich in protein and is suitable for use as a flour or an animal feed Pate, Two types of drug are produced: More resin is produced in tropical than in temperate climates.
Tetrahydrocannabinol THC is the primary active ingredient in the drug cannabis, but THC activity is modulated by dozens of other cannabinoids, terpenoids, and flavonoids. These compounds are synthesized in specialized leaf hairs called glandular trichomes, which are most dense on the surface of the leafy female flowers. The upper head of the glands consists of secretory cells and is covered by a tough but distensible sheath.
Air-dried herbal products such as marijuana, sinsemilla dominate the illicit market in North America, South America, and South Africa. For legitimate medicinal use, clinical trials have demonstrated the efficacy of the drug cannabis for treating many diseases and syndromes, including arthritis, muscle spasms, headaches, menstruation, multiple sclerosis, epilepsy, anorexia, glaucoma, insomnia, anxiety, depression and even drug addiction.
In Western medicine, the use of C. In the past ten years, however, the drug has been re-introduced. Synthetic forms of THC are widely prescribed, and several pharmaceutical companies are currently developing cannabis plant extracts.
The essential oil which contains no THC can be used in cosmetics, perfumes, food additives, and it may be fractionated for pharmaceutical use. The oil has antibacterial, antifungal and pest-repellent properties, and is being developed as an organic pesticide McPartland, The First 12, Years. Botanik, Sorten, Anbau und Ernte. Botany, Varieties, Cultivation and Harvesting, ]. Sinsemilla Tips, 8 3: Advances in Hemp Research. University of Florida Press. Frank M; Rosenthal E, Gettman J; Armentano P, The marijuana crop report.
National Organization for the Reform of Marijuana Laws,. Karus M; Kaup M, Use of natural fibres in the German automotive industry. International Hemp Association, 6 2: Relieves body pain Relaxes muscles Relieves spasms, reduces seizures Relieves headaches and migraines Relieves anxiety or stress. Feelings of well-being and at-ease Up-lifting and cerebral thoughts Stimulates and energizes Increases focus and creativity Fights depression.
When your receptors react with CBD, they form anti-inflammatory effects that reduce pain. CBD also relief anxiety and…. Portable Vaporizers A Hit in and Beyond. I detailed review of the Vapium Lite dry herb vaporizer. Bud Durden Editor Feb 4.
TheWeedBlog Editor Jan TheWeedBlog Editor Oct 24, Such a great episode. Thanks for the post! TheWeedBlog Editor Oct 15, Fantastic deep dive information in this article! TheWeedBlog Editor Aug 8, It will be so interesting to see how this pans out in Canada and if the U. TheWeedBlog Editor Sep 20, Bud Durden Editor Nov 21, The most powerful light in the world? Bud Durden Editor Sep 26, Just make sure you get that bad boy up high away from your plants, I vaporized a few plants before I pulled it all the….
TheWeedBlog Editor Jul 13, Just contributing an idea, check out more interesting strains here as well https:
What Is The Difference Between Indica and Sativa Marijuana Plants
Sep 10, Because Hemp and Marijuana both derive from the Cannabis Sativa family, they do share certain similarities; however, due to each plant's. Sep 20, What's the difference between sativa, indica, and hybrid cannabis strains? This guide is meant to familiarize you with marijuana types and their. Marijuana (Cannabis sativa) contains bioactive cannabinoids, with δ tetrahydrocannabinol being the primary active ingredient responsible for the pleasurable.