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Harvesting Marijuana! When To Harvest Marijuana

PostPosted: Fri Sep 06, 2013 4:59 pm
by ledbud
Harvesting Marijuana! When To Harvest Marijuana

Harvesting Marijuana! When To Harvest Your Marijuana Crop

By DJ Short from greenmanspage.com

There are several important points to consider when choosing the optimum time to harvest your marijuana crop. There are different factors to consider between indoor and outdoor marijuana plants. There is the difference between Sativas and Indicas in bloom duration and final effect.
There is the difference between early and late harvest to encourage head to body high respectively. There is the issue of chemistry because what we are really considering in terms of the ripeness relates directly to the chemical nature and state of the plant at harvest. Last, but not least, is the concept of the window for marijuana harvest, where I will begin.

Window For Harvesting Your Marijuana Crop

This term indicates the period during which the plant is at its optimum state of ripeness. The window opens when the plant is first ripe. Somewhere along the line the plant becomes over-ripe which signifies the closing of the window of harvest.
For most Indicas grown indoors, the window of harvest is about two weeks long give or take a couple of days for various strains. Indoors, if going directly from an 18/6 hour vegetative light cycle to a 12/12 hour bud cycle, most indicas take about eight weeks to fully mature.

As to outdoors I can only speak from experience at the 45th parallel and the bloom times there. At the 45th parallel I've found most Indicas to be at peak harvest starting at the beginning of October, sometimes very late September, and running until the end of October, sometimes running into November during mild years or in a greenhouse. My favorite time to harvest a nice Blueberry Indica outdoors is in the second to third week of October.

For Sativa grown either indoors or outdoors, the window may be open much longer. Some Sativas take up to thirteen weeks to mature indoors. Outdoors many will go well into November and even December, if conditions are right (again, this is near or at the 45th parallel). Head High or Body Stone?
An important consideration has to do with one's preference for a head high or more of a body high. A good head high can positively influence one's mental state much like a psychedelic; whereas a good body high is more similar to a narcotic effect. Generally, head highs tend to be more up and body highs tend to be more down. Suffice it to say that a good healthy mix of the two is a fine goal to achieve.

Sativas and early window harvests tend to be more of a head high, whereas Indicas and late window harvests tend to be more of a body high. Given this rule of thumb you can pretty much come up with what you want. That is, if you prefer a very psychedelic head high, then an early harvested Sativa might do best.
If a very narcotic body high is desired, then a late harvest indicas would probably do best. For that best-of-both worlds high, experimentation with late harvested sativas and early-to-mid harvested indicas usually proves interesting.

Magnify Your Buds

When we speak of various highs experienced by different products, we are noting variations in plant chemistry. The chemicals we enjoy are produced within the glandular stalked trichomes, along the surfaces of the bud flowers (calyxes), bracts, leaves and stems, starting in or around the fourth week of the bud cycle. More and more of these trichomes develop as the plant matures.
I highly recommend that the serious cannabis student acquire a 30X power, illuminated magnifier. These can be found at most local electronics stores, often for under fifteen dollars. With the aid of the magnifier one can learn more about the detail of trichome development and ripeness.
As far as trichomes are concerned, the tall ones with swollen, clear, bulbous heads are what to shoot for. The denser the concentration, the greater the potency.

The Cycle Of Marijuana Plant Maturity

Starting in the third or fourth week of the flowering light cycle, glandular stalked trichomes will begin to form along the surfaces of leaves, flowers, bracts and stems. At the same time, more and more flowers (also called calyxes) develop into densely-packed floral clusters.
The pistils of the young flowers are bright white and turn reddish brown with age. The pistils and flowers develop from the bottom of the bud to the top. The older, lower pistils are the first to turn reddish brown. For most basic indicas this usually happens by the sixth week in the flowering cycle. It is about this time that the calyxes begin to swell.
Calyx swelling is a major indicator of peak maturity. The lowest, oldest calyxes swell first and the swelling works its way up to the highest, youngest flowers on each bud. At peak maturity about 90% of the calyxes will almost look seeded, they are so fat.
Three quarters to 90% of the pistils will have turned reddish brown as well. For a basic Indica this takes well into the seventh week of the flowering cycle.
By the end of the eighth week most of the calyxes will have swollen and a surge of trichome development has coated most of the buds. It is now that the development of a very discerning palate comes into play to determine the finest harvest time. Remember - patience is a virtue and often a discipline.
The ripening signs for most Sativas are highly similar, except extended over a longer period of time. Occasionally, some Sativas have windows of peak harvest that actually open and close. That is, for a week or so the plant may exhibit signs of peak ripeness.
However, a week later the plant may have a growth spurt, which lowers the trichome-to-fibre ratio and overall potency for a little while. Usually a fibrous growth spurt is accompanied by a corresponding trichome increase. Again, time and experience are the key elements in this regard.

Changes In Marijuana Chemistry

As the plant matures through its window of harvest its chemistry changes. As the window closes, the more desirable compounds begin breaking down into less desirable ones. Primarily it is THC breaking down in CBNs and CBDs.
Which particular combination of chemicals is the most desirable is purely a matter of taste and choice, developed over time and with experience. Set and setting also play an important role in determining which type of product is best appreciated.
Pleasant head highs are often desirable for social occasions, whereas a narcotic late-window Indica may work better as an evening medicinal herb. The main point is that these differences are chemical in nature and more research is needed to more fully understand this phenomenon.
Another important point is that much can be done to further enhance the chemical process, especially in regard to bouquet, aroma and flavour, given the proper curing process.

Re: Harvesting Marijuana! When To Harvest Marijuana

PostPosted: Fri Sep 06, 2013 11:44 pm
by 420UKChronic
Hi Ledbud,

Great Article, as aleays.

however can you please clarify, is there a difference when harvesting if you have used LED Lights instead of Sodium?

Re: Harvesting Marijuana! When To Harvest Marijuana

PostPosted: Sat Sep 07, 2013 11:33 am
by FLOWERpower
good question!! 420uk , whats the answer ledbud and idea??

a good thing i have seen come harvest time is this , check this bad boy out ,$8,995 tho :o :o

http://www.youtube.com/watch?v=k1ThQ0lNt-s

Re: Harvesting Marijuana! When To Harvest Marijuana

PostPosted: Sat Sep 07, 2013 12:01 pm
by ledbud
i find led finish early, 5 to 7 days, i use to grow with HPS.
other then that i think its the same. I do every thing the same when harvesting.
:D :D :D :D :D

Re: Harvesting Marijuana! When To Harvest Marijuana

PostPosted: Sun Sep 08, 2013 8:07 pm
by teetee
Hi FLOWERpower,

Cripes that's a hell of a machine there on Youtube! With i-Pod connectivity??? What about wireless? For that kind of money, I'd expect at least a blowjob while I grind the handle :lol:
I think it would be great if you were commercially growing, because you get to save all the good stuff for yourself, all that was collected in the bags should be pure gold, especially that fine dust.
If you were growing for personal though, I reckon this machine would reduce the potency of your bud because all the good stuff gets filtered off. Inevitably the lovely silvery chrome finish of the machine will be covered in wasted dust, which would be lost forever :o

Still, it's amazing what you can get these days! I've bought lots of smoking paraphenalia over the years, but for me, the best innovation was the big aluminium spacecase grinder, it gets used faithfully so many times a day, it's never gonna break, and can provide happiness during a drought :lol:
:cool:

Re: Harvesting Marijuana! When To Harvest Marijuana

PostPosted: Thu Sep 12, 2013 1:18 pm
by ledbud
I enjoy trimming and harvesting, it will take fun out of growing for me mate.
but good for commercial growers
:-P :cool: :grin:::: :grin::::: :-P :cool:

Re: Harvesting Marijuana! When To Harvest Marijuana

PostPosted: Tue Sep 17, 2013 7:55 pm
by LEDDWCRigger
I have noticed no real difference really between hps and led with harvest times. The strains I've grown under either have typically been ready +/- 1 week from expectation.