Soft Secrets: Drying and Curing Cannabis for the Most Potent Smoke

Drying and curing cannabis properly will yield the most THC-potent smoke. When dried and cured improperly, potency can diminish substantially. The level of THC in a plant is determined by its genetics. Proper drying and curing will keep the THC level as high as genetically possible. It does not increase potency. A little background on what happens inside and outside the harvested drying plant will help you understand why proper drying and curing are so important to good quality dope.

Drying evaporates most of the 70-75 percent water content in fresh marijuana. Drying also converts THC from its non-psychoactive crude acidic form to its psychoactive pH-neutral form. Once dry, THC-potent marijuana can be smoked and you will get high. Every THC molecule must shed their moisture content before they are fully psychoactive. In other words fresh green marijuana will not be very potent.

When you cut a plant or plant part and hang it to dry, the transport of fluids within the plant continues, but at a slower rate. Stomata, small openings on leaf undersides, close soon after harvest and drying is slowed since little water vapor escapes. The natural plant processes slowly come to an end as the plant dries. The outer cells are the first to dry, but fluid still moves from internal cells to supply moisture to the dry outer cells. When this process occurs properly, the plant dries evenly throughout. Removing leaves and large stems upon harvest speeds drying, however, moisture content within the “dried” buds, leaves and stems is most often uneven. Quick drying also traps chlorophylls and other pigments, starch and nitrates within plant tissue, making it taste “green” burn unevenly and taste bad.

Taste and aroma improve when these pigments break down. Slow even drying – where the humidity is similar inside and outside the foliage – allows enough time for the pigments to degrade. Hanging entire plants to dry allows this process to occur over time, about 3-4 weeks at 50-60 percent relative humidity and a temperature range of 60-70 degrees F. (15-21 degrees C.) The large outer leaves also form a protective sheath around buds. This protective foliage shields resin glands on buds from rupture and bruising.

Removing large leaves and stems upon harvest saves time. This is what most growers do, because fresh supple leaves are easier to work with than dry leaves. When you are looking a manicuring 5 kilos, you make it as easy as possible! However, this process often causes uneven drying and keeps moisture inside the foliage. This is why it is important to “cure” the “dry” marijuana.

Curing lets the plants continue to dry slowly. The first week of curing affects potency in that it removes moisture within the bud evenly, so that virtually all the THC is psychoactive. Curing also allows buds to dry enough so that mold does not grow when it is stored. A well-cured bud will also burn with an even glow.

Note: Rough handling and friction from fondling hands will bruise and knock off resin glands. Even with proper drying and curing, brutal handling of harvested marijuana will diminish THC content.

Yellow leaves like this usually fall off before harvest. If they are strong and green, leave them on the plant when drying the plant upside down. The leaves will form a protective shield for tender resin glands

Be very careful when handling leaves and all foliage on mature plants. The rows of resin glands are very easy to bruise and knock off.

Close up of Yumboldt from Sagamatha shows delicate white- and amber-colored pistils along with a covering of glowing resin. Careful handling and drying of this crop kept the resin glands intact.

Drying

Here is one of the best ways to dry plants to retain the maximum amount of psychoactive THC. Cut the entire ripe plant at the base and hang it upside down on a line to dry. Try to keep plants from touching each other to avoid uneven drying and mold. Keep the humidity between 50-60 percent. Keep the temperature at about 60-70 degrees F. (15-21 degrees C.). The room should be relatively dark as light, especially direct sunlight, degrades THC.

A circulation and ventilation fan may be necessary to control heat and humidity. You can also use a dehumidifier to control humidity or an air conditioner to lower ambient relative humidity and control room temperature. Do not train fans directly on drying plants it causes them to dry unevenly.

Depending upon atmospheric conditions and the size and density of plants and buds, plants should be dry enough to smoke in about a week. Plants with outer “fan” leaves intact take longer to dry than if leaves have been removed.

Check for dryness by bending a stem. It should snap. The bud should be dry to touch, but not brittle. The bud should burn well enough to smoke now.

Once dry, carefully manicure buds by cutting large leaves where they attach to the stem. Leaving the petiole (leaf stem) can cause mold to grow. Snip off smaller leaves that show little resin so that buds a beautiful bud remains.

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