Polygonatum Root Chinese Herb

Polygonatum Root (Yu Zhu): A Nourishing Herb for Yin, Lung Moisture, and Gentle Dryness Relief

Introduction

Polygonatum root, known as Yu Zhu (玉竹) in Traditional Chinese Medicine (TCM), is a soft, nourishing herb valued for its ability to replenish yin, moisten dryness, and gently support the Lungs and Stomach. With its sweet, slightly cool nature, Yu Zhu is often used to treat dry cough, dry throat, thirst, and internal heat without causing stagnation. Whether used in soups, teas, or restorative tonics, it offers a smooth, balancing boost for those depleted by dryness or chronic illness.

What Is Polygonatum Root?

Yu Zhu refers to the processed rhizome of Polygonatum odoratum, a plant related to Solomon’s Seal. In TCM, it is classified as sweet and slightly cold, entering the Lung and Stomach meridians. Traditionally, it is used to nourish Lung and Stomach yin, moisten dryness, and relieve thirst. Unlike heavier yin tonics, Yu Zhu moistens without trapping heat or dampness, making it ideal for everyday use in people with mild yin deficiency.

Health Benefits of Polygonatum Root

Nourishes Lung Yin and Eases Dry Cough
Yu Zhu is excellent for dry coughs, hoarseness, and throat discomfort caused by Lung dryness.

Moistens the Stomach and Relieves Thirst
It helps soothe dry mouth, hunger without appetite, and thirst, particularly after febrile illnesses or heat exhaustion.

Relieves Internal Dryness Without Causing Stagnation
Unlike heavier tonics, Yu Zhu is light and suitable even when slight heat remains after illness recovery.

Calms Restlessness and Supports Sleep
By nourishing yin, it helps soothe irritability, light insomnia, and emotional agitation linked to dryness or heat.

Supports Skin Hydration and Elasticity
Its moistening properties benefit dry, rough, or aging skin by helping restore internal fluid balance.

How to Use Polygonatum Root

In Herbal Soups or Congee
Use 10–20 grams of Yu Zhu simmered with herbs like lily bulb, white fungus, or snow pear for a hydrating soup or porridge.

In Moisturizing Herbal Teas
Steep with goji berries, chrysanthemum, or American ginseng to create a yin-nourishing, thirst-quenching tea.

In Lung-Recovery or Post-Illness Tonics
Often used in recovery formulas following respiratory infections or fever where yin fluids have been damaged.

Where to Buy Polygonatum Root

You can find Yu Zhu at the following places:

• Chinese herbal medicine shops

• Asian grocery stores (dried herb sections)

• Online retailers such as Amazon, iHerb, or TCM specialty shops

Look for:

• Pale yellow, soft, sliced pieces with a slightly glossy surface

• Organic or pesticide-free labeling

• Well-dried but slightly flexible slices, not brittle

Are There Any Side Effects?

Yu Zhu is very safe when used appropriately. Those with cold and dampness in the middle burner (weak digestion, bloating) should use it with caution, as excessive cooling can worsen symptoms. Best paired with warming herbs like ginger for cold-prone individuals.

Conclusion

Polygonatum root, or Yu Zhu, is a beautiful yin-nourishing herb in TCM that gently moistens dryness, supports Lung and Stomach health, and restores hydration after illness or depletion. Whether brewed into silky soups or calming teas, it offers a smooth and effective way to maintain fluid balance, vitality, and tranquility.

FAQs

Can I drink Yu Zhu tea every day?
Yes, moderate daily use is safe, especially for those experiencing dryness or mild yin deficiency.

What does Yu Zhu taste like?
It has a mild, slightly sweet and starchy flavor with a silky, hydrating quality when cooked.

Is Yu Zhu safe for children?
Yes, in small amounts and under supervision, particularly for dry coughs or post-fever recovery.