very hot and dry summer season for swiss hemp cultivators

When we take a look at the situation in September, at the time when “outdoor” CBD crops (containing no more than 1% THC, and mainly from the European catalogue) enter the blooming phase, two elements can be taken into account. First, we can read on métésuisse / climate reports that August 2018 was the 3rd warmest month since the beginning of the measurements, and secondly that it was also very dry. When you look around the hemp growers in the region, you can see very dry soil and plants that are not as big as usual. Some techniques using hydroretention agents improve the soil’s ability to store water close to the plant’s roots. In the end, observations show that the yield will probably be lower than usual; we expect a September with rain once a week, and lots of sunshine, to further facilitate the plant’s development before harvest.

CBD hemp cultivation in Switzerland is a struggle for our farmers and the preservation of our cultivable land. This raw material is then processed in the reference extraction laboratory in the French-speaking part of Switzerland, cannaxtract labs, and marketed mainly in the form of CBD oil by various brands, including cannaliz, pioneer in the CBD sector in Switzerland. You can also refer to our community store which offers some of these CBD products.

storage of dried cannabis flowers

storage of dried cannabis flowers:

Cannabis products are organic products, among other things, by their molecular compositions such as cannabinoids (CBD, THC, CBG, CBN…) or terpenes (a-pinene, limonene, myrcene…). As a result, these products are “living” and evolve according to the environment in which they are stored.

How best to preserve dried CBD flowers?

Proper storage and care of cannabinoid and terpene products is important to maintain their potency and freshness, by methods that minimize their inevitable degradation.

The methods for properly conserving these dried cannabis smugglers are not especially complex, it is especially important to limit their exposure to certain elements such as humidity, heat, extreme cold and light.

The shelf life of cannabinoid and terpene products varies greatly depending on these conditions. Depending on where you keep your CBD flowers, CBD flowers can strongly influence their effectiveness over time, from a few seconds for extreme conditions to a few months for ambient conditions. However, these dried flowers can retain their potency and therefore their effectiveness for months or even years undergoing almost no degradation if they are kept in an optimal environment (2).

According to studies, however, cannabinoids and terpenes degrade relatively slowly at room temperature (22°C) compared to a refrigerated temperature (4°C) where it could be thought that preservation remains better. This is the case, but temperature differences are also important. We will conclude with these data that the environment will depend on how long the product is expected to be used (1), (2), (3).


For a fast use of dried flowers of the order of 1 to 6 months, an ambient temperature of 20-25°C is sufficient and it will not be desirable that the products are refrigerated (4°C), because:

For this period there is a decrease in the rate of cannabinoids of less than 10%, which does not have too much impact on the potency of the product.
The many temperature variations to which products are subjected when alternating between refrigeration and the outdoors can accelerate their degradation compared to an ambient stability such as a closet in a well insulated room.

On the other hand, if these CBD dried flowers will be used only infrequently, with a long and irregular use projection of more than 6 months, their conservation will preferably be refrigerated at 3-5°C, because after 6 months, one will have a degradation in a non-negligible ambient environment and, because of a less frequent use, a lower risk of degradation related to the thermal differences (1), (3).

In summary:

fast use from 1 to 6 months: dark place, room temperature (20-25°C)

prolonged use for more than 6 months: Dark place, chilled temperature (3-5°C)

It is also important to respect the expiry date of the product, in order to guarantee total effectiveness.

For dried cannabis flowers, three rules are essential:

Keep your flowers in a dark, cool and dry place.

test de conservation selon protection UV sur 2 mois avec de la ciboulette

The most important thing for dried cannabis flowers is to keep them in the darkest possible place, cool and dry.
Light degrades trichomes and alters terpenes, so keep your products as far away from direct light as possible (2).

Heat combined with high humidity, as well as thermal variations, also degrade cannabis flowers, which can cause mould and mildew, which can be dangerous to consume. Avoid storing your dried flowers near heat-producing appliances or in damp places such as bathrooms.
A relative air humidity of 60-65% is ideal for conservation. Different container systems adapted to this need are available on the market and can be a good way to have this ideal rate.

A common mistake is to store flowers in the freezer. Extreme cold temperatures will make the glands loaded with trichomas fragile to detachment and there is a risk of the active substances being found in dust at the bottom of the container. In addition, the cold can suck in moisture from flowers, breaking the resinous glands. Moon Moreover, storage at very low temperature (-18°) is not necessary for a period of less than 2 years (2).

Store your flowers in a waterproof container.

The air degrades the cannabinoids and terpenes, and in the case of dried flowers it will directly affect its power, aromas and fragrance. Flowers left outside will dry completely in a few days. The ideal container for these cannabis flowers is as dark as possible, made of glass, plastic or metal and fitted with a sealing system with a suitable seal and hermetic seal (1), (2).

Some people keep their flowers in plastic bags, risking the crushing of heads when they are handled and, under electrostatic action, the loss of trichomes, due to plastic that attracts the resinous glands of flowers.

Avoid unnecessary handling of your dried flowers:

Avoid opening containers and handling flowers unnecessarily.
If you have a large stock, the basic idea is that you have a smaller container next to it, so that you can access a certain quantity without having to handle the whole stock at every need.

Generally speaking, any unnecessary handling, whether it is an unnecessary shaking or opening of the jar, will be detrimental to dried flowers. Thus, each time the jar is shaken, a few trichomes are detached and each time a head is crushed between its fingers to release the perfume, for example, the head is degraded, the perfume that volatilizes being a phenomenon of this degradation. In addition, since the trichomes are sticky, each time they are handled, they are likely to be transferred to your fingers or other (2).

Another important factor:

Store your cannabis products out of the reach of children or pets, for example, in a place where they do not have access to them, preventing them from falling and breaking the container.


sativa, indica | effects

following on [indica-sativa-hybrid]

Another important point concerning the effects: For example, you will be told that sativas are better for use during the day, because they have energetic and euphoric effects, while the indicators being more relaxing and sedative, will be preferred in the evening. Again, not everything is that simple.

First of all, the effects of cannabis at a point in common with those of alcohol: Depending on the dose administered, the effects are not identical. If you drink 1 glass of beer, you will be euphoric and relaxed, while if you drink 10 beers, you will not be 10x more euphoric and relaxed. The effect will simply not be the same. For cannabis, the same principle applies [1].

And depending on the individual, the symptoms associated with substances can vary greatly depending on the sensitivity and reactivity of each individual [1].

It should be noted that the effects of cannabis depend mainly on 2 chemical groups: cannabinoids (THC, CBD, CBN,…) and terpenes (myrcene, pinene, limonene,…) which operate synergistically (the entourage effect) [2].

The quality and quantity of these natural chemical molecules will therefore establish their mental, physical and emotional properties on humans.

SteepHillLab, for example, an American company recognized as pioneers in cannabis terpene analysis, classifies a rather sativa or indica effect based on the content of a terpene, myrcene.
If a variety has less than 0.5% of myrcene it will have an energizing effect and if its rate of myrcene is higher than 0.5%, its effect will be rather calming and sedative [3].

Myrcene is only one example where terpenes play a major role in classifying the effects of different cannabis varieties (cultivars).

It should be noted that the very small amounts of terpenes present in cannabis compared to cannabinoids have as much influence on the effect as cannabinoids.

The wide variability of terpene compositions can potentially be a good tool for characterizing cannabis biotypes, and ongoing research in this area will help define the therapeutic properties of each variety and to select which variety is least likely to be attacked by predators or diseases in crops.

More detailed studies are needed in the variability of monoterpenes and sesquiterpenes. Crossbreeding to promote a specific terpene is a complex and fascinating area of research.
Terpene assays, combined with cannabinoids and other flavonoid assays are essential to metabolize the digital fingerprint of pharmaceutical cutivars.

The effects of cultivars of these two main biotypes, sativa and indica, can have significant therapeutic variations depending on their relative terpene levels and the resulting synergies. Research in this area will make it possible to elucidate the phytocomplexity of cannabis and select cultivars (hemotypes) with specific (therapeutic) effects [4].

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indica, sativa, hybrid

There is basically no scientific or legal difference, because all cannabis is “Cannabis Sativa L.” In practice we can mention many elements that differentiate them: types of growth, effects,… Although there is no scientific difference between indica and sativa. In practice, there is a lot of differences between indica dominant cannabis strains and sativa dominant cannabis strains; they mainly come from the historical development of the strains and there ability to adapt to different environments.

Here one could have continue writing and published one of these classic paintings on the differences between sativa/indica. What more will you learn if you are told that sativa is larger than the indica, takes longer to bloom, leaves are different, or effects are specific to one or the other? It’s not that simple…

Indeed, there are many different origins between Sativa and Indica. But the crosses (called cultivars) for thousands of years are such, that it is currently extremely rare to find a variety 100% sativa or indica. In addition, there is a tendency to classify cannabis sativa, cannabis indica, and cannabis ruderalis as 3 different species, while all these species (including industrial hemp varieties) come from the single species cannabis sativa (one should say, cannabis sativa subsp. indica (subsp. being the abbreviation for subspecies).

What you see will not automatically be what you have (size, leaves, flowering time, smell, etc.):

  • on the market, it is not uncommon to find the same variety classified as indica or sativa in two different breeders.
  • depending on where and under what conditions your plant has sprouted, dry, humid climate, sunny or not, altitude, type of soil, ph, nutrients, will favour the substances it develops and therefore its morphology and effects[1]

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