Let's start with the perfect growth temperatures for Cannabis – When we first started growing (some 20 years back) We didn’t have Dr-Google to run to when we had a problem within our grow room. What we had was “the grow bible” This was a paperback go-to book for growers of all sorts and sizes. Inside this little book of knowledge gave us a generic idea of where the grow room should sit temperature-wise and that was 85F. Over the years of cultivating and in addition knowing more about the strains we are growing, we are able to dial in room temperatures on a completely different level these days. In our grow rooms we start our clones off at 85F-87F. These temperatures are set for our day and night temperature par levels. What this does is help keep the plants very warm all the way through the plant, the pot, and whatever medium you choose. The warm temperatures help the roots want to move around through that warm dank soil. We keep this temperature on point for the first 7days of cultivation. After that, we start to drop temperatures 1F-2F per day until we are down to 80F. This should take another 5-7days – keep the 80F for the rest of your veg cycle. Now it's time to flip the light cycle on these clones and get ready for the flower stage. The first week of flower we maintain the 80F and don’t change much because the plants are transitioning into flower cycle and are in shock, we don’t want to punish them anymore. After the first week of flower completes your plants can handle a little change so we are going to start dropping temperatures once again. In our grow rooms starting in week 2 of flower we are dropping the temperatures 1F-2F every other day for around 1 week until we are at 75F-76F. These temperatures can maintain for another 4 weeks of your flower cycle. Depending on the strain you are growing you will have longer or shorter flowering times. The next step is customized for each strain. In our grow rooms during the last 3 weeks of flowering time we will start dropping temperatures once again. We will lower temps 1F-2F for 1 week bringing the room temperature to 72F. What these cool temperatures start doing is shocking the cannabis plant so lightly that she starts oozing more THC / FROST / BLING / RESINS. We all like that part of the plant but you have to do everything with care and a gentle touch. Reasoning behind that is your cannabis plant will go into shock. Every time your cannabis plant goes into shock she doesn’t grow for around 7 days. HANDLE YOUR PLANTS WITH CARE. Now the next step is for the far experienced grower and will change the colour of your bud from green to purple. If you know exactly what strain you are growing you can alter its colours by dropping temperatures in the last 7days of flower to a staggering 65F. This is going to shock your plant to a different level where she will actually change colours on you. Please keep in mind these practices are within our group of cultivators and are the tips and tricks that “the grow bible” never taught us. : ) Watch for hot spots within your grow room, move your thermostats around and give yourself a clear idea of where the heat is and is not in your room. In our grow rooms we have 6 thermostats per room staggered throughout. We place thermostats around the top of the flower canopy; we also place thermostats on each end of the room. It’s always good practice to see how long it takes your room to cool from opposites sides when your air conditioner turns on.
6,000 Years of Medical Cannabis Today’s infographic comes to us from MedReleaf, and it focuses on the muses of cannabis discovered by many cultures over time. With uses dating back to Ancient empires such as Rome, Egypt, and China, it helps to put into perspective recent legal and cultural developments regarding cannabis on a broader historical scale. 4000 BC: Pan-p’o village Cannabis was regarded among “five grains” in China, and was farmed as a major food crop. 2737 BC: Pen Ts’ao Ching Earliest record of cannabis as a medicinal drug. At this time, Emperor Shen-Nung recognized its treatment properties for over 100 ailments such as gout, rheumatism, and malaria. 2000-1400 BC: Scythians Nomadic Indo-European peoples used cannabis in steam baths, and also burned cannabis seeds in burial rituals. 2000-1000 BC: Atharva Vedas Cannabis was described as a “source of happiness”, “joy-giver”, and “bringer of freedom” in these Hindu religious texts. At this time, cannabis was smoked at daily devotional services and religious rituals. 2000-1000 BC: Ayurvedic Medicine Open religious use of cannabis allowed for exploration of medical benefits. During this period, it was used to treat a variety of ailments such as epilepsy, rabies, anxiety, and bronchitis. 1550 BC: Ebers Papyrus Egyptian medical papyrus of medical knowledge notes that medical cannabis can treat inflammation. 1213 BC: Ramesses II Cannabis pollen has been recovered from the mummy of Ramesses II, the Egyptian pharaoh who was mummified after his death in 1213 BC. 900 BC: Assyrians Employed the psychotropic effects of cannabis for recreational and medical purposes. 450-200 BC: Greco-Roman use Physician Dioscorides prescribed cannabis for toothaches and earaches. Greek doctor Claudius Galen noted it was widely consumed throughout the empire. Women of the Roman elite also used cannabis to alleviate labor pains. 207 AD: Hua T’o First recorded physician to describe cannabis as an analgesic. He used a mixture of cannabis and wine to anesthetize patients before surgery. 1000 AD: Treats Epilepsy Arabic scholars al-Mayusi and al-Badri regard cannabis as an effective treatment for epilepsy. 1025 AD: Avicenna The medieval Persian medical writer publishes “Avicenna’s Canon of Medicine”, stating that cannabis is an effective treatment for gout, edema, infectious wounds, and severe headaches. His work was widely studied from the 13th to 19th centuries, having a lasting impact on Western medicine. 1300 AD: Arab traders Arab traders bring cannabis from India to Eastern Africa, where it spreads inland. It is used to treat malaria, asthma, fever, and dysentery. 1500 AD: Spanish Conquest The Spanish brought cannabis to the Americas, where it was used for more practical purposes like rope or clothes. However, years later, it would be used as a psychoactive and medicinal drug. 1798: Napoleon Napoleon brought cannabis back to France from Egypt, and it was investigated for its pain relieving and sedative qualities. At this time, cannabis would be used to treat tumors, cough, and jaundice. 1839: William O’Shaughnessy Irish doctor William O’Shaughnessy introduced the therapeutic uses of cannabis to Western medicine. He concluded it had no negative medicinal effects, and the plant’s use in a pharmaceutical context would rapidly rise thereafter. 1900: Medical Cannabis Medical cannabis was used to treat nausea, rheumatism, and labor pain. At this point in time, it is available over-the-counter in medications such as “Piso’s cure” and “One day cough cure”. 1914: Harrison Act Drug use was declared a crime in the U.S., under the Harrison Narcotics Tax Act in 1914. 1937: Marihuana Tax Act The Marihuana Tax Act banned the use and sales of cannabis in the United States. 1964: Discovery of THC The molecular structure of THC, an active component of cannabis, was discovered and synthesized by Israeli chemist Dr. Raphael Mechoulam. 1970: Classified as Schedule 1 Drug Cannabis became categorized as a Schedule 1 Drug in the U.S., which limited further research into the plant. It was listed as having “no accepted medical use”. 1988: CBD Receptors Discovered The CBD1 and CBD2 cannabinoid receptors were discovered. Today, we know they are some of the most abundant neuroreceptors in the brain. 2000-2018: Medical cannabis legalization Governments, such as those of Canada and various states, begin to legalize cannabis for medical purposes from licensed producers. Recreational legalization quickly starts to follow.
Delta9-Tetrahydrocannabinol (THC) Phytocannabinoid Chemical Information IUPAC Name – (6aR,10aR)-6,6,9-Trimethyl-3-pentyl-6a,7,8,10a-tetrahydro-6H-benzo[c]chromen-1-ol Chemical Formula – C21H30O2 Molecular Weight – 314.46 g/mol Properties Density – n/a Boiling Point – n/a Short-term Stability (4 weeks) Sub-Freezer -70°C – No decrease in purity observed Freezer -15°C – No decrease in purity observed Refrigerator 4°C – No decrease in purity observed Room Temp 22°C – No decrease in purity observed Hot Temp 40°C – No decrease in purity observed Long-term Stability Stable for 60 months at -10°C freezer conditions has been established through real-time stability studies. Biology Confirmed Therapeutic Uses Ulcerative Colitis/Crohn’s Disease – Although further research required, can be adjunct treatment for nausea, vomiting and anorexia from UC/CD. Potential alternative to narcotics Anti-emetic – Human trials support significant benefits for chemotherapy induced nausea and vomiting vs placebo. As well as, benefit patients refractory to ondansetron. HIV/AIDS – Improve appetite, promote weight gain, and lift mood. Dosages Ulcerative Colitis/Crohn’s Disease – 115 mg THC in cannabis cigarette Acute and chronic pain – typical dosages start at 5 mg, but can be increased depending on necessity in edible or capsule form. Usually less than 100 mg. Promising Potential Applications Neuropathic pain, acute pain, fibromyalgia References https://ibd.cochrane.org/sites/ibd.cochrane.org/files/public/uploads/silverberg-_cannabis_for_the_treatment_of_ibd.pdf https://www.cochrane.org/CD012954/IBD_cannabis-and-cannabis-oil-treatment-ulcerative-colitis https://www.cochrane.org/CD012182/SYMPT_cannabis-products-adults-chronic-neuropathic-pain https://www.cochrane.org/CD009464/GYNAECA_cannabis-based-medicine-nausea-and-vomiting-people-treated-chemotherapy-cancer https://www.cochrane.org/CD005175/HIV_medical-use-of-cannabis-in-patients-with-hivaids https://www.cochrane.org/CD011694/SYMPT_cannabis-products-people-fibromyalgia About The Author Dr. Rivera-Acevedo is an Adjunct Professor in the Department of Anesthesiology, Pharmacology & Therapeutics at the University of British Columbia in Vancouver. He is also cannabinologist and consultant for various pharma companies around the world. With a BSc from the University of Puerto Rico – Cayey and PhD in Pharmacology from the University of British Columbia, he has extensive knowledge and expertise researching cannabis and its derivatives. In 2015, he established the first laboratory for cannabinoid research in the Department of Pharmacology at UBC, which is dedicated to understanding the therapeutic uses of different cannabis strains and formulations to treat different diseases. He also teaches various undergraduate courses within the department including Introduction to Pharmacology, Statistics in Science, Drug Development, Natural Health Products, and Pharmacogenomics. As former Director of Chemistry for Cannevert Therapeutics Ltd, he lead the chemistry team conducting R&D, QA/QC, and manufacturing research to improve cannabinoid extract formulations and development of new delivery methods. He also helped organize and supervise one of the first internationally recognized clinical trials with cannabis in Puerto Rico. When not in the lab, he can be found in the dojo practicing Brazilian Jiu Jitsu, teaching mindfulness to high school students with the Vancouver Crisis Centre, co-hosting the shows Cannabis Science Podcast, Cannabis Con Ciencia Podcast, and El Bus De Las 7 on Vancouver Coop Radio 100.5 FM.