What are the harvesting and processing methods for Asarum (wild ginger)?
For directly sown Asarum, it can be harvested after 3 to 4 years of growth. For transplanted Asarum, if two-year-old seedlings are planted, harvest 3 to 4 years after planting; if three-year-old seedlings are planted, harvest 2 to 3 years after planting. At present, in order to collect seeds, harvesting can be delayed by 5 to 6 years, collecting more seeds to expand direct sowing of seeds. Wild seedlings can be harvested in the 3rd year after transplanting.
The customary harvesting period for wild Asarum is from May to June. For cultivated Asarum, harvesting from August to September gives good quality and high yield. After harvesting, remove all soil, tie every 10 or so plants into a small bundle, twist them into a braid with rope, and dry them in a cool, well-ventilated place under the eaves. Never wash them with water or expose them to the sun: washing with water makes the leaves turn black and the roots turn white, while sun exposure makes the leaves turn yellow; both reduce the aroma and affect quality.