Harvesting, Drying & Curing Cannabis: A Complete Guide

Growing the plant is only half the job. How you harvest, dry and cure your cannabis has an enormous effect on the final aroma, smoothness and quality — and it is where a lot of otherwise good grows fall down. Rush these steps and you undo weeks of careful work; do them patiently and even a modest grow can finish beautifully. This guide walks through the whole process, from reading the plant for ripeness to storing the finished flower.

First, the legal frame. In South Africa the 2018 Prince judgment decriminalised private cultivation and use of cannabis by adults (18+) for personal consumption in a private place, while dealing and selling remain illegal. What you harvest at home is for your own personal use. For the full context, read our guide on whether dagga is legal in South Africa.

When to harvest: reading the plant

Timing is everything, and the plant gives you two clear signals. The first is the pistils — the fine hairs on the flowers. Early in ripening they are white and stand upright; as the plant finishes they darken to orange or brown and curl inward. When most of them have turned, the flower is approaching its peak.

The more precise signal is the trichomes, the tiny resin glands that give buds their frosty look. Viewed through a cheap jeweller’s loupe or a pocket microscope, they progress through three stages: clear, then cloudy or milky-white, then amber. A canopy dominated by milky trichomes with a scattering of amber is the classic harvest window. Harvest earlier for a more energetic character, a little later for a heavier, more relaxing one. This ripening happens in the final weeks described in our week-by-week timeline.

Wet trim versus dry trim

Once you cut the plant, you need to remove the leaves. There are two schools of thought on when:

• Wet trimming — you trim the leaves off immediately after harvest, while the plant is fresh. It is easier and faster because the leaves stand out, and it takes up less drying space. It can also dry a little quicker, which matters in humid conditions.
• Dry trimming — you hang the whole branches or plant first, then trim after it has dried. The extra leaf slows the drying process, which many growers feel protects aroma and gives a gentler, slower cure.

Neither is wrong. In a damp climate, wet trimming reduces the risk of mould; in a dry one, dry trimming can prevent the flowers finishing too fast. Choose based on your environment.

Hang-drying: slow and steady

Drying is where patience pays off. The aim is to lose moisture slowly and evenly over roughly one to two weeks, not to blast it dry in a couple of days. Hang the branches upside down in a dark, well-ventilated space and aim for cool, moderate conditions — somewhere around 18–20 °C with humidity in the region of 50–60%. Gentle air movement is good, but never point a fan directly at the flowers.

A slow dry preserves aromatic compounds and makes for a smoother final product, whereas a fast, hot dry traps a harsh, grassy quality that no amount of curing fully removes. You will know the drying phase is done when the smaller stems snap cleanly rather than bending. At that point the flower is dry on the outside but still holds moisture deep inside — which is exactly what the curing stage is for.

Curing in jars: the burping routine

Curing is the step that separates decent cannabis from genuinely good cannabis, and it is the one most often skipped. Once the buds are dry enough to snap the small stems, trim them (if you dry-trimmed) and pack them loosely into airtight glass jars, filling each about three-quarters full. Inside the sealed jar, moisture from the centre of the bud redistributes to the surface, and beneficial processes continue to break down chlorophyll, smoothing the harshness and developing aroma.

The key routine is burping: for the first week or two, open the jars once or twice a day for a few minutes to release built-up humidity and exchange the air. If the buds feel damp or smell of ammonia, they went into the jar too wet — leave the lid off longer to let them dry back. A small hygrometer in each jar takes the guesswork out; many growers aim for around 58–62% relative humidity inside. A basic cure runs two to four weeks, but flower generally keeps improving over one to two months.

Storage and a note on potency

Once cured, store your cannabis in airtight glass jars kept somewhere cool, dark and dry. Heat, light and air are the enemies of quality — they degrade the flower over time — so a cupboard away from windows is far better than a sunny shelf. Well-stored, properly cured cannabis holds its quality for many months.

It is worth remembering that a good cure tends to bring out potency and effect rather than diminish it, so the finished product can be stronger than the fresh flower suggested. If that matters for your circumstances, our guide on how long dagga stays in your system is a useful read. And if you are still planning your grow, start at our grow hub or the broader South African home cultivation guide.