Harvesting Artemisia annua

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Artemisia annua is rich in active ingredients and is therefore effective when harvested before and during flower production. Flower buds are very small, round and green. Flowers are very small, yellow and delicate. Once the flowers wilt and during fruiting, the active molecule content in the plant drops rapidly! The plant should not be used for medicinal purposes from this point!

Plants that flower early due to stress or lack of adaptation must be harvested before fruiting. There is no point in harvesting their seeds because it is their genetics that prevent them from growing well under local growing conditions. Their seeds will therefore not produce suitable and productive offspring.

Leave the finest and most productive plants to flower to collect their seeds! (See File Seed Production).  Identify plants to be reserved for seed collection before the final cut and do not harvest them for herbal tea production.

In the dry season,

if there is a lot of dust and soil on the plants, rinse them in the morning of the day before harvest by watering abundantly with clean water.

In a dry climate,

cut the plants to 30 cm high with clean and dry secateurs.

IMPORTANT: Do not cut any lower or the Artemisia will die!
Be sure to leave some green (non-woody part) to allow the plant to grow back


any lower branches (which will turn yellow quickly).

Dirty lower branches are a second-choice product to be dried and processed separately for veterinary use (see Animal Health).

Do not harvest

yellow leaves that dry out or leaves damaged by fungi, pests and other diseases.


2 large handfuls of compost around the base of the plant to promote the recovery of development after cutting.


This method doubles yield in the dry season but does not appear to work well in wet climates!

In the dry season,

if there is a lot of dust and soil on the plants, rinse plants in the morning of the day before harvest by watering abundantly with clean water!


the plants at the base with a clean and dry machete.


roots from the field as they reduce yield of subsequent crops (due to their allelopathic effect).

For seed plants

reduce watering by half after flowering to encourage the production of germinating seeds.



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