Scallion Roots
Scallion Roots (Cong Bai Xu): A Warm, Pungent Food Therapy for Releasing the Exterior, Supporting Immunity, and Warming the Body
Introduction
Scallion Roots, known as Cong Bai Xu (葱白须) in Traditional Chinese Medicine (TCM) food therapy, are traditionally used to release the exterior, support immunity, and gently warm the body. Warm and pungent in nature, they are valued for promoting circulation, easing early-stage cold symptoms, and supporting overall balance, especially in cooler seasons.
What Are Scallion Roots (Cong Bai Xu)?
Scallion Roots are the white root hairs attached to fresh scallions (green onions). In TCM, they are considered warming and dispersing, helping to open the pores, promote Qi movement, and support the Lung’s defensive function. They are commonly used in decoctions or teas rather than eaten as a vegetable.
Health Benefits of Scallion Roots (Cong Bai Xu)
Releases the Exterior and Supports Immunity
Scallion Roots help dispel external Wind-Cold, making them useful at the early onset of chills, mild fever, or nasal congestion.
Warms the Body and Promotes Circulation
Their warming, pungent nature supports circulation and helps relieve cold sensations, especially in the limbs.
Supports the Lungs and Sinuses
Traditionally used to open the nasal passages and support Lung Qi, easing stuffiness and mild respiratory discomfort.
How to Use Scallion Roots (Cong Bai Xu)
As a Food Therapy
Simmered as a simple tea or decoction, often with ginger, to gently warm the body and support immunity.
As a Seasonal Support
Commonly used in fall and winter or during sudden weather changes to prevent or address early cold symptoms.
In Traditional Preparations
Frequently paired with fresh ginger or brown sugar to enhance its warming and dispersing effects.
Where to Buy Scallion Roots
You can find Scallion Roots by saving them from fresh scallions purchased at:
- Traditional Chinese grocery stores
- Asian vegetable markets
- Regular supermarkets with fresh scallions
Look for:
- Fresh, clean white roots
- No mold or foul odor
- Firm, intact scallion bases
Are There Any Side Effects?
Scallion Roots are generally safe when used appropriately. Those with Heat conditions, fever from Heat, or spontaneous sweating due to Qi deficiency should use them cautiously, as their dispersing nature may be too stimulating if overused.
Conclusion
Scallion Roots (Cong Bai Xu) are a warming TCM food therapy used to release the exterior, support immunity, and gently warm the body during Cold-related patterns.
FAQs
Are Scallion Roots toxic?
No, they are non-toxic and traditionally used in TCM when properly prepared.
Can Scallion Roots be used daily?
They are best used short-term or as needed, rather than daily long-term, especially for acute Cold patterns.
Are Scallion Roots warming or cooling?
They are warming and pungent, making them best suited for Cold-related conditions rather than Heat patterns.

