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Harvesting, Processing Methods and Medicinal Effects of Polygonatum

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Harvesting and processing: Polygonatum grown from transplanted rhizomes is harvested after 1 to 2 years, while plants grown from seed are harvested after 3 to 4 years. In late autumn or early spring, dig out the rhizomes, wash off the soil, remove the fibrous roots and diseased scars, steam for 10 to 20 minutes (until thoroughly steamed), take them out and dry them in the sun, kneading them while drying; after 7 to 10 days of sun-drying they will be dry. Medicinal effects: Polygonatum is sweet in flavor and neutral in nature. It enters the spleen, lung and kidney meridians. It has the effects of tonifying the spleen and moistening the lungs, nourishing yin and promoting fluid production, tonifying the middle and replenishing qi, and strengthening the tendons and bones. It treats consumptive damage with alternating cold and heat, pulmonary tuberculosis with coughing of blood, pulmonary tuberculosis with dry cough and no phlegm, diabetes, hypertension, and post-illness bodily

Harvesting and processing: Polygonatum grown from transplanted rhizomes is harvested after 1 to 2 years, while plants grown from seed are harvested after 3 to 4 years. In late autumn or early spring, dig out the rhizomes, wash off the soil, remove the fibrous roots and diseased scars, steam for 10 to 20 minutes (until thoroughly steamed), take them out and dry them in the sun, kneading them while drying; after 7 to 10 days of sun-drying they will be dry.

Medicinal effects:

Flavor and nature of Polygonatum: sweet, neutral. It enters the spleen, lung and kidney meridians. It has the effects of tonifying the spleen and moistening the lungs, nourishing yin and promoting fluid production, tonifying the middle and replenishing qi, and strengthening the tendons and bones. It treats consumptive damage with alternating cold and heat, pulmonary tuberculosis with coughing of blood, pulmonary tuberculosis with dry cough and no phlegm, diabetes, hypertension, post-illness bodily weakness with poor appetite, weakness of the tendons and bones, rheumatic pain and other conditions. In addition, Polygonatum also has the effect of enhancing the human immune function, and has antibacterial, anti-aging, complexion-beautifying and vitality-strengthening effects.

Examples of traditional Chinese medicine prescriptions:

(1) To treat hemoptysis due to pulmonary tuberculosis: 500 g of Polygonatum, 250 g each of Bletilla striata and Stemona root, and 200 g of fragrant solomonseal rhizome. Grind together into a fine powder, refine with honey into pills, take 3 times a day, 15 g each time.

(2) To treat angina pectoris due to coronary heart disease: 25 g each of Polygonatum and kelp, 15 g each of arborvitae seed, acorus rhizome and curcuma root, 10 g of corydalis tuber, and 40 g of hawthorn; decoct into a paste, 1 dose per day, taken in 3 divided doses, with 4 weeks as one course of treatment.

(3) To treat cough due to lung dryness: 25 g of Polygonatum, 20 g of coastal glehnia root, 15 g each of apricot seed, mulberry leaf and dwarf lilyturf tuber, and 10 g of raw licorice root. Decoct in water and take.

(4) To treat whooping cough: 15 g each of Polygonatum and Stemona root, 10 g each of asparagus root, dwarf lilyturf tuber, belamcanda rhizome, lily bulb, aster root and bitter orange immature fruit, and 5 g of licorice root; decoct in water and take.

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