What is post harvest evaporation, read this https://cannabis.net/blog/how-to/cannabis-chemistry-what-to-know-about-evaporation-postharvest

1. 1/25/2021 Cannabis Chemistry - What to Know about Evaporation Post-Harvest
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WEED EVAPORATION POST HARVEST
bi h i h b

2. 1/25/2021 Cannabis Chemistry - What to Know about Evaporation Post-Harvest
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Cannabis Chemistry - What to Know about
Evaporation Post-Harvest
What is evaporation after you harvest your weed?
Posted by:
Joseph Billions , today at 12:00am
Cannabis Chemistry: What To Know About Evaporation
Post-Harvest
The goal of every cultivation process is to have a high yield after cultivation. This reality is the same with cannabis
cultivation and is even more important given the high demand for canna-products. Much care is then taken to ensure
that all the aspects of cultivation are well regulated to ensure the right quality of cannabis owers. One such aspect

3. 1/25/2021 Cannabis Chemistry - What to Know about Evaporation Post-Harvest
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where care is needed is the treatment of the cannabis ower post-harvest. Read on as we share all there is to know
about the chemistry of the cannabis plant following evaporation post-harvest.
Cannabis and Humidity
The relationship between humidity and cannabis is a special bond that every cannabis cultivator knows all too well
about. The choice of whether to cure the plant totally or retain moisture is one that distinct top cannabis cultivators
from others. Moisture retention is very important as it plays a huge role in determining the overall quality of the
cannabis plant. Di erent cannabis cultivators have harnessed this knowledge to set aside their products from that of
other competitors in the market.
Some cannabis cultivators are always in a rush to process harvest owers. This leads them to quickly cure the plant and
when this is done hurriedly, it a ects the chemistry of the product. This impacts the identity of their product among
retailers and consumers. Read on as we look into just how much evaporation post-harvest steals from the cannabis
plant and how bene cial moisture retention can be.
Insu cient humidity
The cannabis plant plays host to over 100 cannabinoids which are useful for a di erent number of reasons. Contrary to
what many cannabis users think, cannabinoids are much more than CBD and THC. The plant also contains terpenes
which give di erent strains of cannabis plants their unique taste and aroma. Terpenes also have therapeutic uses
alongside cannabinoids. Di erent researches are ongoing to fully elucidate the extent of the medicinal e ects of the
cannabinoids of cannabis and the terpenes.
The cannabinoids act in synergy to give what is known as the entourage e ect. The entourage e ect is the interaction of
di erent cannabinoids to increase their e ectiveness in the endocannabinoid system. This improves the medicinal
e ects of the plant and humidity plays a role in controlling it. When excess evaporation is done after harvesting the
cannabis plants, the trichomes become fragile and can easily break o . The backlash of this is that terpenes also tend to
evaporate meaning that the plant loses a lot of bene cial compounds.

4. 1/25/2021 Cannabis Chemistry - What to Know about Evaporation Post-Harvest
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Unfortunately, what is lost to evaporation cannot be recovered back. This means that even if the cannabis plant is
rehydrated, the terpene content lost cannot be replaced. This invariably damages the aroma and taste of the cannabis
plant and creates a situation hard to remedy. This reality is a product of insu cient humidity in the cannabis plant
which occurs after excess evaporation post-harvest.
The downside of excess evaporation post-harvest
The loss of the bene cial compounds in the cannabis plant to evaporation changes the chemistry of the plant. Excess
evaporation reduces the therapeutic value of the cannabis plant and can render it ine ective. This becomes a worry if it
is to be used medicinally as it may bring about therapeutic failure in medical marijuana patients.
The ultimate e ect of excess evaporation of cannabis plants post-harvest eventually falls on the consumers. Those with
proper knowledge of the plants know the importance of moisture for determining cannabinoid and terpene content.
When they discover that cannabis plants from a source have been over-dried, it is only natural that they look for
another source. This ultimately results in nancial losses for the cannabis cultivator. An analysis done at Boveda further
shows how dry cannabis owers can a ect pro t. 72 ower samples sold at ve legal markets were analyzed in terms of
humidity and the results used to ration losses. Resinous compounds in cannabis plants evaporate when the cannabis
ower is stored below 55 percent relative humidity.
About 70 percent of the ower samples analyzed were found to be overly dry. This class of ower samples had relative
humidity that was below the range of 58 to 62 percent. A mere 5 percent below optimal relative humidity means that 6
pounds of 1000 ponds of cannabis tested are lost. At a rate of $5 per gram, this sums up to about a $13,500 loss. One
can imagine the nancial impact of a 70 percent e ect.
It is probably easy to just say since moisture is so important, then plants should not be dried. However, excess moisture
bears the risk of making the plant susceptible to mold and microbial growth. This also renders the plant useless and
brings about nancial loss for the cultivator. This is why most cultivators are quick to dry cannabis plants and with
moisture also being very important, a way forward is necessary.
Way forward

5. 1/25/2021 Cannabis Chemistry - What to Know about Evaporation Post-Harvest
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One viable solution that can attend to the issue of excess evaporation is the use of a two-way humidity control solution.
A two-way humidity control solution helps to add or remove water vapor from a package or container. Think of it as a
bu er solution that helps to maintain a constant predetermined RH level. This is bene cial to help producers maintain
consistent moisture strength in cannabis plants thereby saving the cannabinoid and terpene content. It also removes
the risk of mold or microbial growth in the plant.
A study done with a two-way humidity control solution shows that it can help improve terpene content by 18 percent
and cannabinoid content by 23 percent. This ultimately improves the quality of the plant and its value which translates
into pro ts for the cultivator.
Bottom line
Evaporation of cannabis plants post-harvest though important has to be well controlled. Excess evaporation reduces
the quality and value of the cannabis plant. Excess moisture on the other hand opens up the plant to mold and
microbial growth. This is why it is important to nd a balance between the maintenance of moisture levels in cannabis
plants. A balance can be found with a two-way humidity control solution.
HOW TO HARVEST WEED, READ MORE TIPS...
(https://cannabis.net/blog/opinion/when-to-harvest-cannabis-for-top-
yielding-buds)

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WHEN DO YOU HARVEST YOUR MARIJUANA PLANTS? READ THIS! (https://cannabis.net/blog/opinion/when-to-
harvest-cannabis-for-top-yielding-buds)
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