a few days of dark before harvest???

thewinghunter

Active Member
The Stichting Institute of medical Marijuana (SIMM), the first company to sell marijuana through the pharmicies of Holland, has been investigating the medical possibilities of cannabis, together with TNO laboritories and the University of Leiden.

One of their discoveries has been that to keep the ripe plants in the dark before harvesting could increase their potency.

SIMM's growers seperated a crop of mature plants, harvested half of them and kept the other half in absolute darkness for 72 hours before cutting and drying.

Analysis of the resulting dried buds showed that some varieties had seen increases of THC of up to 30 %, while the CBD and CBN remained the same.

thank you for the info!
 

businessmen

Active Member
Do you guys see a difference on the magnifying glass after the dark? What is actually happening? More new clear trichomes pop up? Maybe you just really like the high of clear trichomes and should really harvest sooner, not necessarily put them in 3 days dark. Just throwing out ideas.
 

puntacometa

Well-Known Member
Do you guys see a difference on the magnifying glass after the dark? What is actually happening? More new clear trichomes pop up? Maybe you just really like the high of clear trichomes and should really harvest sooner, not necessarily put them in 3 days dark. Just throwing out ideas.
Interesting that no one has been able to really answer this. I've got a monster White Rhino that will be 9 weeks into flower on Sunday with clear trichs right now. I've also got a room where I could black it out completely. I'd love to be able to cut it on Monday but I also don't want to fuck it up.
 

jsgrwn

Well-Known Member
i asked a question smart ass..... y would you put a plant in 12 hours of darkness?? where is the line crossed on hours of darkness at the end of flowering? and scientificly explain it... if you can come up with a better explanation than bricktop of y it doesnt help, then i might believe you... but youre doin the same thing by sayin its bullshit and doesnt work, when its abviously been tested... honestly, all of us noobs get our fuckin "retarted noob" information from retarded fuckin "know it all assholes" like yourself.... if someone told me that your mom sucked dick better after 24 hours in the dark, you better believe im gonna put that bitch in pure darkness for 24 hours....
gotta get personal? fyi, most peoples moms are not into bitches or fags so it looks like you are out. srry bro. and with a tude like that you will continue growing okay weed, YOU WILL NEVER PRODUCE THE GANJA THAT YOU SEE ON HERE. :bigjoint:so take your bag of seed and your flashlight and go get back in the closet.:dunce:
 

smitty420420

Active Member
ive always wondered about the 72 hrs of darkness ive also heard it needs to breed from a white widow or on down the line to help but that could b just more bs
 

Twistedfunk

Active Member
THC breaks down during the day under the light. THC is regenerated during the dark phase. The plants can only function for 72 hours before needing more energy. Some strains respond better to this treatment then others so if you tried it and saw no improvement that doesnt mean stop doing it. If it didn't increase the potency then you at least made sure that your plant's grow juice was in the roots and not in the buds during the time you chopped which is a great start to a cure.
 

kstampy

Member
So... During the 72 hour darkness there is no watering right?

Even IF it did not help you at all as far as "thc or bud gain", at the very minimum you would be making it easier to harvest by drying out and leaching for 3 days straight and saving 36 hours worth of electricity that comes out of your wallet?

Has anyone SEEN or taken PICS of the difference in trichs after the 3 days of darkness? Do you gain more trichs or do your trich degrade or swell or what do you actually SEE (with your own eyes, not theoretically with scientific facts) if anything? Were you running a sativa or indica? was it a bush or a sog grow or lollipopped or what?

We need less "know it all" arguing over internet forums and more credable information and accepting of others opinions. Some people are SO not open minded, their loss. Even then, if you disagree, at the very least you really don't have to bitch at each other like little school girls.

I come here to learn. Half of what I read are really dumb arguments that just make finding the good information more difficult. But at the end of the day... I TAKE THAT INFORMATION, READ INTO IT MORE OR LESS AND FORM A LOGICAL OPINION OF -->MY OWN!<-- And leave it at that, no arguments. Put your e-peens away.

Anyway, appreciate the info some of you guys put into the post. Wheres the OP?? I want to know what happened to your crop? I'm thinking about trying this but I still have 6 weeks to go. :(
 

Twistedfunk

Active Member
Watering is unnecessary during the 72 hours because she is barely functioning, lights are off and heat shouldn't be an issue. I do this for EVERY one of my girls and my product is unbelievably smooth after curing. Most dispensaries around here can't even boast that. On a majority of plants I have done this to, there is no visible change but on some there is. (its about genetic dispositions) They become more resinous and maturation seems to occur at an accelerated rate. On the plants that do not benefit from an increased resin production, there is still the benefit of making sure none of the horrible tasting stuff is up in the buds when you harvest and is down in the roots instead. Win -> Win
 

rabidcow

Active Member
here is the strain description from my widow from atitude flying dutchman seeds. Copied and pasted.

It's suggested to flower (12 hour light) this marijuana variety for 8 weeks, but 10 weeks will really give her the crystals you are after. Try to turn the lights off altogether the final 2 weeks of the flowering cycle- or at least down to 8 hours. This keeps the flowers from re-growth and stresses the plant into giving up its last drop of goodness as crystal to protect the flower! The buds have so much THC on them that it is hard to see them at all.

Ok, same horse is dead lets beat it from this point of view. Why the fuck is flying dutchman going to tell you to " Try to turn the lights off altogether the final 2 weeks "?
I love the phrase "Try to" here. What the fuck do they mean try to?
Either do it or dont.
But the idea that this seed distributor would put/pay a guy or girl in a desk, To write that up if they didnt feel it would benifit the consumer makes no sense. I mean, we have all read some shit in these strain descriptions that just kinda made ya laugh cause it is basicly the same shit just a little processed through the thesaurus. I even dispute some of the claims some sites/seed banks make as to what it could cure/help. Just find this particular description fucking out there, I bought it tho i guess lol.
So, they say last 2 weeks...... no light........ I would pay 50 bucks to have a conversation with anybody who actualy did this. This isnt an offer, i mean on what planet could i make this offer and you wouldnt have a 99% rate of fucking liars looking for a free 50 bucks
Ok i am high you caught me. on topic. Lights off for 2 weeks and let my plants just sit there. If i had 100 plants in pots, sure i would put 1 in the dark for 2 weeks. But I dont.
Still tho, why Flying Dutchmen White Widow Feminized peoples say that?
 

jsgrwn

Well-Known Member
here is the strain description from my widow from atitude flying dutchman seeds. Copied and pasted.

It's suggested to flower (12 hour light) this marijuana variety for 8 weeks, but 10 weeks will really give her the crystals you are after. Try to turn the lights off altogether the final 2 weeks of the flowering cycle- or at least down to 8 hours. This keeps the flowers from re-growth and stresses the plant into giving up its last drop of goodness as crystal to protect the flower! The buds have so much THC on them that it is hard to see them at all.

Ok, same horse is dead lets beat it from this point of view. Why the fuck is flying dutchman going to tell you to " Try to turn the lights off altogether the final 2 weeks "?
I love the phrase "Try to" here. What the fuck do they mean try to?
Either do it or dont.
But the idea that this seed distributor would put/pay a guy or girl in a desk, To write that up if they didnt feel it would benifit the consumer makes no sense. I mean, we have all read some shit in these strain descriptions that just kinda made ya laugh cause it is basicly the same shit just a little processed through the thesaurus. I even dispute some of the claims some sites/seed banks make as to what it could cure/help. Just find this particular description fucking out there, I bought it tho i guess lol.
So, they say last 2 weeks...... no light........ I would pay 50 bucks to have a conversation with anybody who actualy did this. This isnt an offer, i mean on what planet could i make this offer and you wouldnt have a 99% rate of fucking liars looking for a free 50 bucks
Ok i am high you caught me. on topic. Lights off for 2 weeks and let my plants just sit there. If i had 100 plants in pots, sure i would put 1 in the dark for 2 weeks. But I dont.
Still tho, why Flying Dutchmen White Widow Feminized peoples say that?
all i can say is...marketing...perhaps it is similar to the reason some say 800 gr per sq ft. but dutchmen says only 150gr, pretty realistic.

I have seen some seed companies stating that a few extra hours is the way to go. beats me brother
 

rabidcow

Active Member
ya i know, those yield figures almost discredit any other info you read from those people. then there is the realistic yield offered buy dutchman. then they go and ruin it buy saying 2 weeks in the dark. LOL. i really just want to find 1 person that did that shit.i know i aint doin it, butwho the fuck does this?
to me it is so out there to even suggest that. its almost like their saying,: ya try that shit you stupid".lol in a paranoid state it makes me think my seeds were rubbish..............
 

Barrelhse

Well-Known Member
Is it possible that instead of stressing them into producing more resin instead they produce male flowers as their last resort? And if so, is it possible that when you cut and hang the buds they could begin seed production since they are still growing to some degree? Or is it pretty much risk free to leave them in the dark?

I am curious cause my plants are about to 12 hours of darkness and ready to harvest..fighting the urge to do it tonight instead of in another day and a half.:eyesmoke:
I'm not sure about the dark method, although I have one in the dark now. Some say that the light breaks down the trichs, so by doing this the new trichs aren't exposed to light as they are produced. Be careful about bud rot- dark and cold can kick it off; try to keep a fan on the plants if you can.
 

urban1026835

Well-Known Member
ok so im day 58 right now two ladies and at lights out i will be putting the indica dom in darkness for 24-36 hours because all though there is some good info here nothing beats the real experience of do it yourself im gonna take a pic right now with my shit cam so i doubt there will be much difference in photos before and after but i always like a photo reference and a shitty pic is better than no pic rightIMG_20130622_124003.jpgIMG_20130622_123940.jpgIMG_20130622_123931.jpgIMG_20130622_123910.jpgIMG_20130622_123901.jpgIMG_20130622_123855.jpgIMG_20130622_123843.jpg
 
ill go brush up on my mj anatomy/chemical production before i start throwing technical terms like THC around, fair enough, but it is a fact that you can get honey oil from the stems and leaves of a vegging plant because i do it ALL THE TIME lol, and im pretty sure minute amounts of THC are present in all parts of the plant, including the seeds.
I've done it to bud too, and while the quality is probably better, it's not signifigant. Hypothetically try smoking some stem; it will get you high, if only a little and with a mad headache. If you pack some stem in a pipe and then only smoke the outside layer off of them it will be less horrible, but butane extraction of molecules of THC is definetly the way to go.
So I'll admit a lack of knowledge of what chemical (THC, CBC, CBN as the main canibinoids) it is that is still getting me high since there are hundreads of canabinoids and they all contribute to the high. But you can definetly do it; i just don't want nubs to start throwing away stem they could be making into free hash :)
You are getting high from the butane. Not the absent THC. As others said, the THC is only located in the bulbs of the trichomes. So making butane hash out of the stems and fan leaves isn't really getting high amounts of THC. You are just pushing butane through it, drying it out, and smoking it. The effects of smoking butane are almost the same as smoking marijuana. The difference is that you are adding a bunch of intoxicants. If you continue to use BHO in large amounts, you risk liver damage, paralysis, death, etc. Just b/c your butane says 'Food Grade' doesn't mean it is ok to consume. Food Grade just means that is acceptable to clean counters and knives used to cook with.

Neurotoxic Effects from Butane Gas

Acute Intoxication
Because butane gas inhalants enter through the pulmonary system, they immediately enter into the blood supply and within seconds produce intoxication. The acute effects of inhalants include dizziness, hypertension (increased blood pressure), tachycardia (increased heart rate), impaired coordination, disorientation, temporal distortion, confusion, thick slurred speech, delirium, hallucinations, assaults and suicide attempts. Depending upon the inhalant, recovery may take minutes to hours or may not occur at all. Single episode use can be fatal because of oxygen displacement from red blood cells, hypoxia and asphyxiation. Victims of pulmonary effects are often found with a paper bag over the head.

Profound relaxation and deep sleep usually follow the initial euphoric phase.Unpleasant symptoms reported after the use of inhalants include agitation, seizures, ataxia, headache, and dizziness.

Chronic Effects
Chronic inhalant abuse destroys motor neurons that send commands from the brain to the hands and feet. As these motor neurons fail, varying degrees of motor impairment result, including a decreased ability to perform manual and mental tasks. For example, toluene vapors produce high levels of this lipid soluble chemical, particularly in the brain. Toluene abusers present symptoms of motor uncoordination, fatigue, mental impairment, and increasingly greater degrees of permanent central nervous system damage. Most inhalants produce some degree of hepatotoxicity (liver damage). Halogenated hydrocarbons, such as freon, cause severe hepatotoxicity.

Some inhalants change cardiac physiology and increase the risk for cardiac failure. For example,butane (from cigarette lighters), freon (from aerosol propellants) and toluene (from glues) hypersensitize cardiac cells to norepinephrine, the neurotransmitter that stimulates cardiac contractions. Inhalants interfere with the transport of oxygen by interfering with the binding or release of oxygen by red blood cells. The resulting hypoxia also causes cardiac cell hypersensitivity to norepinephrine. Norepinephrine sensitivity and hypoxia can cause cardiac muscles to defibrillate or begin contracting randomly. A syndrome called Sudden Sniffing Death (SSD) occurs without warning, and discontinuation of breathing the inhalant does not reverse the sequence of events. Victims of SSD often appear to sense that something is wrong, and run away from the source or site where they were inhaling, before collapsing and dying.

Neurotoxic Effects
Permanent cerebral and cerebellar neurological disability is the most well known toxic effect of chronic inhalant abuse. Long-term abusers are at significant risk for a neurological syndrome consisting of memory loss, cognitive impairment, sleep disturbance, depression, anxiety, and personality changes. Permanent cognitive disorders are also well described in patients who chronically sniff gasoline. Long term occupational chemical exposure (e.g., painters) may result in the development of cerebral atrophy and abnormal EEGs.

Chronic abuse of n-hexane and nitrous oxide are well known to cause peripheral neurological deficits including profound sensorimotor polyneuropathy (n-hexane) and a demyelinating polyneuropathy and extremity weakness (nitrous oxide), which appears to be related to the inactivation of vitamin B12, an important cofactor in many necessary biochemical reactions.

Inhalation of leaded gasoline increases the risk for neurological complications from organic lead poisoning. These include mental confusion, poor short-term memory, psychosis, and encephalopathy. Symptoms of inorganic lead poisoning (headache, abdominal pain, hepatic injury, renal damage) have also been reported in patients who chronically inhale gasoline.

Animal and human research shows that most inhalants are extremely toxic. Perhaps the most
significant toxic effect of chronic exposure to inhalants is widespread and long-lasting damage to
the brain and other parts of the nervous system. For example, both animal research and human
pathological studies indicate that chronic abuse of volatile solvents such as toluene damages the
protective sheath around certain nerve fibers in the brain and peripheral nervous system. This
extensive destruction of nerve fibers is clinically similar to that seen with neurological diseases
such as multiple sclerosis.


The neurotoxic effects of prolonged inhalant abuse include neurological syndromes that reflect
damage to parts of the brain involved in controlling cognition, movement, vision, and hearing.
Cognitive abnormalities can range from mild impairment to severe dementia. Other effects can
include difficulty coordinating movement, spasticity, and loss of feeling, hearing, and vision.
Inhalants also are highly toxic to other organs. Chronic exposure can produce significant damage
to the heart, lungs, liver, and kidneys. Although some inhalant-induced damage to the nervous
and other organ systems may be at least partially reversible when inhalant abuse is stopped,
many syndromes caused by repeated or prolonged abuse are irreversible.
Abuse of inhalants during pregnancy also may place infants and children at increased risk of
developmental harm. Animal studies designed to simulate human patterns of inhalant abuse
suggest that prenatal exposure to toluene or trichlorethylene (TCE) can result in reduced birth
weights, occasional skeletal abnormalities, and delayed neurobehavioral development. A number
of case reports note abnormalities in newborns of mothers who chronically abuse solvents, and
there is evidence of subsequent developmental impairment in some of these children. However,
no well-controlled, prospective study of the effects of prenatal exposure to inhalants in humans
has been conducted, and it is not possible to link prenatal exposure to a specific chemical to a
specific birth defect or developmental problem.

References
Brick, J. (1998). Inhalants, Technical Document No. 3. Yardley, PA: Intoxikon International.

Broussard, L. (1999). Inhalants. In B. Levine (Ed.). Principles of forensic toxicology (pp 345-353). Washington: American Association for Clinical Chemistry.

Kolecki, P and Shih, R. (2003). Inhalant abuse. In J. Brick (Ed.). Handbook of the medical consequences of alcohol and drug abuse (pp 579-607). New York: Haworth Medical Press.
 

beczka

New Member
It seems that some people in this post still don't believe in not watering the plant and putting it in the dark for the last few days.

All i can say is that in a recent study in Russia, biologists discovered that “When a tree is foreseeing its death, the tree gathers its entire energy and deposits this energy into producing seeds for the very last time. For example, an oak tree broken by the storm or a cedar tree with its bark removed from its trunk, in a farewell effort before they die forever, give their record crops of acorns or nuts.” (Soloukhin, Vladimir. Razryv Trava. In Russian. Moscow: Molodaya Gvardia, 2001.)

this applies for nearly all Plants which build Seeds/Flowers also Cannabis.
 

Organic_baarie

New Member
In terms of light deprivation, it's my understanding that I does not produce more thc, but whqt it does do is allow all the sugars in the plant to travel back to the roots,allowing for a tastier better and smoother smoke. I light deposit for 2 days before harvest and in a side by side experiment with 2 clones from the same mother have noticed a fair difference in taste and aroma of the bud. So I'm pro light dep
 
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