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Detailed Explanation of Key Points on Harvesting and Processing Techniques for Asarum

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Harvesting: For Asarum grown by direct seeding, if the density is high, it can be harvested after 3-4 years of growth. If transplanted with 2-year-old seedlings, harvest 3-4 years after planting; if using 3-year-old seedlings, harvest 2-3 years after planting. Sometimes, to collect more seeds, harvesting can be delayed to 5-6 years, but beyond 7 years the plants age and become prone to disease, and the root system becomes dense and twisted into a mat, making harvesting inconvenient. The best harvesting time is mid-September each year. Processing: After harvesting, remove all mud and sand, bind into bundles of 1-2 kg each, and place in a cool, shady area to dry in the shade. Avoid washing with water or sun-drying. After washing with water, the leaves turn black and the roots turn white; after sun-drying, the leaves turn yellow, both of which reduce the aroma and affect quality.

Harvesting: For Asarum grown by direct seeding, if the density is high, it can be harvested after 3-4 years of growth. If transplanted with 2-year-old seedlings, harvest 3-4 years after planting; if using 3-year-old seedlings, harvest 2-3 years after planting. Sometimes, to collect more seeds, harvesting can be delayed to 5-6 years, but beyond 7 years the plants age and become prone to disease, and the root system becomes dense and twisted into a mat, making harvesting inconvenient. The best harvesting time is mid-September each year.

Processing: After harvesting, remove all mud and sand, bind into bundles of 1-2 kg each, and place in a cool, shady area to dry in the shade. Avoid washing with water or sun-drying. After washing with water, the leaves turn black and the roots turn white; after sun-drying, the leaves turn yellow, both of which reduce the aroma and affect quality. Each mu can yield 400-700 kg of dried product.

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