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The Art Of Curing Your Medical Marijuana


dank up closeby Kyle Kushman

Curing is a lengthy subject. I believe the art of curing is more difficult to master than growing. I will try to provide an overview. To begin with glass jars are the only way to cure properly. Unfortunately they are clear, so find a spot in a closet or corner of the house that is dark and free from large temperature variances.

Drying must be done properly before curing can begin. If drying is not done properly by quickening, over drying, under drying, or anything else, curing cannot even be attempted. Buds should be dried to a point that may not burn perfectly in a joint. It burns well, but it would have been tastier if the bud had been left out to dry for just a few more hours. That’s all it would take for it to turn crispy. It still has a little spring in it.

Place buds into a glass jar. The jars should be full to the top to expel the majority of air. You need air and some moisture as they allow the aerobic bacteria to come to life. They will consume chlorophyll and make your buds smoke smoother. Less harsh on the throat and tastier on the pallet.

The trick is to leave the proper moisture content in the bud, in relation to it’s particular density. Relative humidity and air temperature when jarring will play a role as well. The presence of air, light, and water are all that’s necessary for these bacteria to spring to life. Leaving just enough water and air to allow the bacteria to feed on the chlorophyll, but not enough to proliferate throughout the jar. When they run out of air, they die. So opening the jar is counterproductive to curing. Although it is necessary to pinpoint whether or not you got it right.

If you don’t leave any moisture in the buds there will be no true cure, one that increases potency through a rotation of the THC molecule by slowly removing the water. The best way to learn is to jar a half dozen or more jars of the same size, at the same time. Date the jar, and in a week crack it open.

Catch the first whiff off the jar as you break the suction created by the curing gases. If you smell the slightest whiff of ammonia, you left too much moisture in the buds and this curing attempt is done. Remove all the buds from the jars and dry them out completely. If however when you crack the jar, you smell sweet heavenly ganja, then close it up. Repeat the process in a week to check the progress of your cure. If you’ve kept the jars closed for a full two weeks and the odor is 100% free of any ammonia smell, your probably home free.

I have cured buds for 6 months that came out as fresh and pliable as when they went in. Although 2-3 weeks is enough for a good cure. I don’t fully appreciate the bouquet of most strains after a month of intense curing. You can keep buds sealed and curing for up to 2 years. Although that will take a lot of practice. I once smoked 2 year cured Sweet Tooth buds with Breeder Steve in Switzerland. WOW!

Article from MedicalMarijuana.com and republished with special permission.


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  1. This is quite an array of suggestions from inexperience, claimed experience, and actual experience. This part of the process is fascinating to me. As well as in my opinion, the most important thing to do “right”. I am NOT one of the expert “legal” growers on my team. We believe in our humble operation in same sized mason jars with digital hygrometers in the jar at a 62 degree room temperature with 30% room humidity in a dark room. (going to experiment with the digital curing caps…thanks for the suggestion btw). I personally use the burping method as stated above checking every 24 hours for first 3 days with a similar technique of allowing air to drop the humidity from 55 to 25% before relidding, and then every 36 hours for next 4.5 days, and then every 48 hours once the feel and smell seems to be at my personal liking where I have burped from 56% to 52% over a 2 week time period. Meaning I stayed consistent at 52% for at least 5 days. I chose 52% because by the time you roll it and smoke it about an hour later, it seems smooth and robust with tender bouquet and seemingless transition to my high. I would like to expand this to 4-6 weeks. I was on the phone with a “wise man” today who shared a “proper cannabis cup strain maybe aged and cure in as little as 4 – 6 weeks”.

    So my question is, can you help out a novice like myself attempting to elongate the process? Do I just let ladies sit without flipping the jars every week or do I leave them in the dark and allow the aging to happen?

    And, if you are wondering why I am not asking the growers? it’s because I don’t want to get teased and prefer to actually do some research where I have an edge on them. I am open to any suggestions. And you may email me as well at cr8tivdesigns@gmail.com, if that is a preference to you.

  2. shatter stuck to my floor on

    Too me curing is all about making the buds more pyscho active due to converting THC to CBN at a slower than normal rate… ever smoke a 6 month old dried out bud you found in your drawer? it fucks you up… simply because of this process.

    Curing in jars slows down this process while attempting to preserve the buds original state as much as possible.

    At any rate… until someone comes up with some science instead of smoother smoke and gets you higher… curing to me sounds like a fancy way to get rid of old weed at high prices…

    I maintain the best buds are the freshest buds.

  3. shatter stuck to my floor on

    Let me blow your mind…. I don’t smoke buds that are older than two weeks…

    Fuck curing…. just blast it on the dehydrator on day 3 or four and in my opinion you preserve your bud in a “live” state.

    I keep my buds in jars and put them in when they are still squishy and for me… the best buds smoked are the freshest.

  4. Schmoke Another 1 on

    The guys from green house seeds suggest curing from 3-5 months. Everywhere I read is a different opinion. Bags.. Glass jars.. Fuck. Lol can someone just get to the point already?

  5. while in Katmandu, I smoked some some uniquely incredible herb.

    In color .the nugs looked like & were as hard as rocks & ranged from brown to a reddish black in color.
    I thought it was hash.
    The local told me the way they cure it is to remove stem & leaf from bud at harvest.
    pack green buds into large bamboo tubes.
    these tubes are placed about a meter above hot embers, where they are slowly rotated above this low heat for 2 to 3 months.
    this created the amber look.
    the buds seemed to be hardened in honey.
    super smooth & sweet tasting.
    super concentrated & hugely expanding in the lungs.
    the smallest flake would burn forever.

    Locals told me green weed is for making hash.
    curing in California, 3-7days upside down. remove buds from branch. too wet, brown grocery bags. too dry, black hefty bags. 5-7 days. trim while moist.
    turkey bag it up sucking out ALL air, place in darkness.. air & turn 5-7 days for 2-4 weeks. bud should still have return when squeezed. lose load into glass jars. seal with lid.keep in darkness. air weeklyish for next 2-3 months. start smoking at 1 week from trimming. see how it improves with age. flavor & high mutates (?) slowly. try to save an 1/8 for a year or longer.

  6. Cannabis buds have too much moisture to cure without partially drying. They will mold and rot if not partially dried first.

    You are the one that doesn’t understand. The author is spot on.

  7. My second step between drying and curing in jars is paper bags for about a week or two. It allows the moisture to leave but at a slow rate. Ive had great success curing this way. try to find unbleached paper bags.

  8. curing – as with tobacco – is done BEFORE drying – you are confusing curing with ageing…

  9. Of course there are variables of temperature, atmospheric pressure, vapor pressure of water,light, bacteria, fungus. Use reason. Understand what is happening so you can control it. I open the jars all the time short intervals too because you can measure your progress more accurately because it is more frequent. Also, it gives the bacteria more oxygen. Keep the bacteria killing the fungus. Also if you check it all the time you can have have moist weed for longer because you don’t leave the jar open for that long and it removes the water slowly.Also I think this keeps the water moving continuously and does not allow the mold to establish a colony because there is constant motion and there is no stale stable place to grow. Also, you can smell the weed every time and feel it, and you will see if there is mold. I never get mold. You could smell it coming. instead of opening up a fuckin jar that is completely moldy. My step dad molds his shit every time, and all he has to do is open the jar up at the right time. EARLIER. The guy said to smell your jars. The jar that he opened up that smells like ammonia could have been opened up at the right time and it would have fine, but he waits a week.
    Closing the jar for a long time probably doesnt cure good like everyone thinks because the colony of bacteria that actually does the curing is not getting any oxygen to cure.

    The only thing that happens when you open the jar is you let in more oxygen, possibly release moisture depending on the surrounding atmospheric conditions, and possible change in temperature from atmospheric conditions. If your weed is getting dry and you want to keep curing

  10. Curing is not just removing the water. It’s when the bacteria live because of oxygen and water. The bacteria die when you close the jar because it isolates the bacteria colony from excess oxygen. The rate at which they are growing,how many, and how much oxygen is in the jar depends on when the bacteria die. I am going to keep mine alive and thriving take over the fungus(mold). So curing would be keeping the bacteria alive and keeping fungus(mold) from growing, and at the same time using the bacteria to consume the chlorophyl. I have read that the sugar, starches, and chlorophyl are all converted to different compounds, that enhance the flavor while smoking. I am not sure of the names of these compounds or whether of not the bacteria makes these compounds. Or if the bacteria decomposes chlorophyl then the products of decomposition react with the water,sugar and starches to form the compounds. More research of bacteria and cannabis. I know nothing about removing the water. He said it rotates the THC molecule. I do not know how that makes more THC? What the fuck? I am a chemistry major. The only way to get more THC is to create it. I know that THC is created in the plant starting from an acid (cannabinolic acid) then it decomposes from heat and looses a carboxyl substituent group from the molecule and becomes THC. The acid is very similar to THC because that is only one group or two different ones. So maybe there is some residual acid that is converted to THC when cured. Acid cant exist without water. And if you dry it out too fast it will not be converted to THC. I do not know why. Maybe it needs to be acid to work. Maybe the acid decomposes to THC in the presence of water, oxygen, bacteria? I do not know how the carboxyl group is removed to create the THC when curing. Heat is used when growing. Carboxyl group is a double bonded oxygen and and an alcohol group. That means two hydrogens would need to replace the bond to those bonding sites to become THC. So maybe the two hydrogens from water. That means Oxygen would have to be released if the water molecule decomposes.

  11. The Best thing I found for curing is the cureCork no more manually labor I just set the timer on the lid and it does everything for me and Automatically Burps my jar Since the Cure Cork I haven’t had any problems curing my bud

  12. ColoradoGrower on

    depends on humidity in the air. im from Florida id dry buds for a week maybe even 10 days. then i moved to colorado the dry mountain air allows the bud to dry in 3 or 4 days

  13. Thats not true dude, i myself have gotten totally baked on a bud that i picked directly off of my plant. If there’s THC on the bud and you inhale that then its gonna fkk you up/

  14. Back in the early 90s when I grew I made sure to trim all leaves off the buds after harvest and hung up before they started to wilt then the buds would be dried in complete darkness for the first 3 or 4 days. I had been taught this prevented chlorophyll locking into the plant material and helped speed up the curing process later. After 3 or 4 days it wasn’t critical to avoid light but still best to minimize light exposure during the remainder of the drying period. I also had an intermediate step using some food grade plastic tubs with ventilation holes where buds were laid down in layers with slightly moist paper towels between each layer if the bud was too dry(crispy) or dry newspaper/papertowel if the bud was close to dry but a tad moist to get the moisture just right. I’d re-stack and layer the bud everyday with fresh paper as needed looking for signs of mold for a week. Then when the bud felt right I’d start final curing in jars for 10 – 14 days depending on feel and smell. I always got the smoothest, sweetest smoke that way. That was my process for years and it worked for me quite well and never had anyone complain.

  15. Fred Flinstone on

    Using a Curing Cap will help monitor the humidity of the contents of the jar and reduce unnecessary burping. Allowing herbs to cure slowly for maxim taste. Its worth every penny… Search ebay for CURING CAP

  16. heh they be smiling when they look at you after they see all that weed like : You know you dun fucked up righ?

  17. LOL sorry bro for laughing, but um yeah…..let the bud dry out first before you smoke it. You will only get about 5% of the THC of your bud if you smoke it while it’s still fresh. And it will burn better and taste better. Cure it for 2 months and you will have high grade.

  18. If you and your wife are caught with so much as a faulty windshield wiper with 80 ounces of weed in your car, No police officer is gonna smile.

  19. I have found that filling the jars all the way to the top can induce mold. I leave a half inch to an inch space from the top to rotate them around in the jar during burping. I put the jars up in my top of my bed room closet and keep it as dark as possible at all times when not being used. When I awake to get dressed, I can burp the jars. Southern Californian October temps are not too harsh. If we have an indian summer, or a fall heatwave, I would have to monitor the jars. But 2 months is about good.

  20. I’m a new grower, i grow only medicine for my wife, I actually don’t smole myself. She loves what i’ve grown but says it’s harsher than what she gets at the clinic. I grow in our sunroom, outdoors and in a room I constructed with lights and all that so when I decided to cut a few down and dry them, the harsh bud is what we got. I didn’t evn think about curing them… duh.. I will being do that now but I have another question, could my timing be the issue as well? I just waited until those white hairs turned amber, that’s all I went by. do you have more advice? I’e only been using a random book I found and the internet so any REAL advice is quite a struggle to WEED out from all of the stuff I read on the internet!

  21. The article does not mention if you decide to cure for a month or more how often or if at all you ever need to open the jar again…

  22. Smokin@420.bud on

    Consider orange/apple rinds for boosted moisture.

    I’ve been using a small piece of lettuce to boost moisture since the 80s. I think it would have less effect on the flavors than using fruit rinds.

  23. Most definitely, I’ve had jars that I’ve been curing in various cupboards, and forgetting about one, only to find it a couple of days later and all the buds be covered with mould.

  24. LoL, you smoked weed straight after harvesting without any drying at all?!?!?

    I’ve only ever used glass jars for curing, it works just fine for me, I don’t see the point in changing something that works for me.

  25. Travis Haire from Vermont on

    Fill a half dozen jars or more, and check them in a week is HORRIBLE Advice. You will more than likely have mold. The most important thing in curing is to burp your jars enough the first week in the jar.

  26. Man you are a genius. I’ve been looking everywhere for someone who could tell me what curing is. Slowly taking out the water, I know now.

    Now I know this. And all the people I’ve met say curing doesn’t matter.

    I just wanna know, how do you spot one of those noob grower/seller ahead of time who most likely has nasty stuff. Because they buy it regardless of curing.

    I’m scared now! Cause these idiots have seriously been the cause of my bad bud edaches.

  27. That usually happens at a greater ratio with dry weed. Your experiment will hold true with dry weed. But that static charge can and will be ruined by the slightest amount of moisture.

    Ziplocks are disruptive. The nature of the seal is that they will dry out and this will occur Paint your glass jars if you cant find a dark place if you want are are worried about photosynthesis.

    Do I agree with you, 100%. Ziplocks can work, however still, they do risk that exact situation occurring, Btw the seal on those usually fail in the edges (stress tested)

  28. I smoked my weed just after it was croped it had not much effect. will this get alot stonger when dried and hang to dry?

  29. Me and my wife both have a 215 for 80oz. We live in Calif. we have heard that we can still be put in jail when transporting from the garden to our home. Is this Leagle?

  30. Most of the Medical Marijuana in California is sold, purchased, and consumed UNCURED. The product hits shelves as soon as dry, which has little to do with Curing Flower tops, but much to do with $$$. A grower who diligently cures his/her product for 2-3 weeks,(among other grow issues), offers Top Shelf premium bud. Buy an ounce of “fresh/moist side” top shelf from your local club. Empty all into a quart widemouthed Ball jar, make sure the buds are not crowded. If you have a hydrometer use it targeting a 50% RH. The range will be 30-60% in So. Cal. Do not let bud dry out! Think bread, once dry can you get it back to shape right before drying? If bud feels too dry when brought home, place hydrometer in jar with smoke. If you can not reach 30%RH, seal and don’t open for 48 hours. Consider orange/apple rinds for boosted moisture. Consider returning it too dry,(and not da kine),. The RH should get above 40%. Open jar every 24 hours for 10-15 random minutes. If hygrometer is in jar, keep open until the RH drops below 25%, seal airtight and watch RH rise to 55%, repeat with 48 hour intervals after 1 week. Uncured quality product is excellent. It is like eating a salad with steak. Curing seasons the steak(crystallizes the bud) into a Filet, vs Uncured(London Broil). The Broil will dry, but not cure, if no moisture is present. Try this test. Notice the smooth smoke, lack of seizure inducing cough, white ash, subtle flavors, even burn, etc. This is cured cannabis flower. Curing is as important as growing! Yes, but only if you care about taste, health, quality, potency, smell. . . A Grower, or Floriculturalist, is a difficult mental, spiritual and physical job. Very tough compared to proper curing!! I do love growing, or why bother? If I can’t grow better than I can buy, ALWAYS LEGALLY, where would the challenge lie? I have heard that one may use baggies, pill bottles, Tupperware. I do not doubt that any sealed container works, the difference is one of degree. Try curing your storefront herb, let me know the result at theplayer8@gmail.com. I look forward to e-mails, intelligence is my only request. Peace Out. I hope this helps. . .

  31. StickyBUDPRO on

    I think the author didnt include a time table for the reasons you stated in your comment. There are so many variables to take into account including, bud strain, bud density, temperature at your place, humidity, ect ect. This is why cureing is such a hard thing to master. In my opinion it is WAY WAY harder then growing. From what i have “heard” lol ;) its best to crack the jars for just a few minutes. Some people will do a quick rotation of the buds in the jar but be quick. If you lose too much moisture its game over. If you open the jar next time and you smell nothing much at all you have failed amd should try again next time. You will know the smell of properly cureimg bud when you crack the jar. This will also help to setermine how long to air the jar at first before you increase the time between openings

  32. StinkyBUDPRO on

    Ziplock bags superior to glass jars??? Try this.. Take a bunch of old baggies that contained pot. Cut them open and rub A finger over andover the bags for a long while. A substance starts to appear on your finger… Thats odd.. Keep going and it will put quite a bit of this substance on your finger, it will be brown or green depending on the amount of plant material. Take that and smoke and and BOOM YOU GOT HASH. Why does this work so well?? Plastic bags have a static charge that is detrimental to the trichomes, they are literally pulled right off of your bud. Now i dont know about you tony aroma but i want my trichomes on my bud and nowhere else!!!!!!

  33. I think this is one of the most over looked and under appreciated aspects of MJ culture. Especially for the commercially grown. 

  34. Good tips, thanks! Another option that many people love is to cure in Black Magic Odor Barrier Bags. They are like oven bags but much thicker and black in color and are ideal for curing. If anyone would like to try one out for free, just leave a mailing address on our website contact form at GroGroGadgets.com and I will send you a sample.

  35. thats pretty vague..So how many days  or hours to dry and when curing, about how long to open jars and let your bud breath…also how hot or cold should it be ..alot of  things can go wrong ,mold and such …..we all know properly cured bud is the best but a litte more info in time table of dry and cure  would be helpfull…..i once smoke weed with jesus but his bud was columbian gold….

  36. “To begin with glass jars are the only way to cure properly.”
    Not true.  I switched from glass jars to ziplock bags a few years ago and am never going back.  Granted, glass jars (or other airtight containers) are necessary for storage, but because they are airtight they are not ideal for curing.  Ziplock bags are superior for a number of reasons.

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