Notoginseng

Panax notoginseng is native to southern China, with its natural range concentrated in Yunnan and Guangxi provinces.

• Primary production center: Wenshan Prefecture, Yunnan Province, which accounts for over 90% of global supply
• Grows wild in montane forests at elevations of approximately 1,200–1,800 meters
• The genus Panax has a disjunct distribution across East Asia and eastern North America, a biogeographic pattern reflecting ancient Laurasian origins dating back to the Tertiary period
• Cultivation history in China spans at least 400–600 years, with Wenshan recognized as the authentic production area (Daodi region)
• The species was first documented in the Bencao Gangmu (Compendium of Materia Medica) by Li Shizhen in 1578

Panax notoginseng is a perennial herbaceous plant typically growing 30–60 cm tall.

Root & Rhizome:
• The medicinal part is a fleshy, ovoid to conical root, typically 1–6 cm long and 1–4 cm in diameter
• Root surface is grayish-brown to yellowish-brown with longitudinal wrinkles and rootlet scars
• Transverse section reveals a greenish to yellowish-green interior with a distinctive radiating pattern
• Rhizome (underground stem) is short and bears annual stem scars ("jian"), which are used to determine the plant's age

Stem & Leaves:
• Single, erect, unbranched stem, glabrous, green with purple tinge
• Palmately compound leaves arranged in a whorl of 3–7 at the stem apex
• Each leaf has 3–7 leaflets; leaflets are oblong to obovate (~3–12 cm long), serrated margins, dark green above and paler beneath

Flowers & Fruits:
• Inflorescence is a simple or compound umbel, terminal, bearing small greenish-yellow flowers (~2 mm diameter)
• Flowers bloom in June–August; 5 petals, 5 stamens, inferior ovary
• Fruits are bright red drupes (~5 mm diameter) when mature, containing 2 seeds
• Seeds are white, kidney-shaped, requiring a dormancy period of several months before germination

Notoginseng thrives in specific ecological conditions that are difficult to replicate outside its native range.

• Prefers warm, humid subtropical montane climates with annual temperatures of approximately 15–18°C
• Requires well-drained, loose, humus-rich slightly acidic soil (pH 5.5–7.0)
• Naturally grows under forest canopy in semi-shaded conditions; requires approximately 10–20% full sunlight (strongly shade-demanding)
• Annual rainfall requirement: 1,000–1,300 mm
• Highly susceptible to continuous cropping obstacles — cannot be replanted in the same soil for 10–15 years due to soil-borne pathogens and autotoxic compounds
• Wild populations are extremely rare; the species is considered nearly extinct in the wild due to overharvesting and habitat loss

Panax notoginseng faces significant conservation challenges.

• Wild populations are classified as endangered due to centuries of overharvesting and habitat destruction
• Listed in China's National Key Protected Wild Plants (Category II)
• The vast majority of commercial supply now comes from cultivated sources
• Wenshan Prefecture has established protected germplasm resources and standardized cultivation bases
• Efforts are underway to develop sustainable cultivation practices and preserve genetic diversity of wild populations

Notoginseng is generally considered safe when used appropriately, but certain precautions apply.

• Overdose may cause symptoms including dry mouth, fever, agitation, and in severe cases, nosebleeds or bleeding gums
• Contains bioactive saponins (notoginsenosides) that affect blood coagulation — should be avoided before surgery or by individuals on anticoagulant medications
• Not recommended during pregnancy due to potential effects on uterine contractions
• May interact with blood-thinning medications, immunosuppressants, and certain cardiovascular drugs
• Proper dosage in traditional preparations is typically 3–9 g of dried root per day

Cultivation of Notoginseng is technically demanding and requires specific conditions.

Light:
• Requires 80–90% shade; traditionally grown under lath houses or forest canopy
• Direct sunlight causes leaf scorch and plant death

Soil:
• Deep, loose, well-drained sandy loam rich in organic matter
• pH 5.5–7.0 (slightly acidic to neutral)
• Must be free of pathogens; crop rotation interval of 10–15 years is essential

Watering:
• Consistent soil moisture required; waterlogging must be avoided
• Irrigation should be carefully controlled to prevent root rot

Temperature:
• Optimal growth temperature: 18–20°C
• Sensitive to both frost and extreme heat

Propagation:
• Primarily by seed; seeds require 6–8 months of stratification (warm then cold) to break dormancy
• Seedlings are typically transplanted after 1 year and harvested after 3–7 years of growth
• Root quality and saponin content increase with age; 3-year-old roots are the standard for medicinal use

Common Problems:
• Root rot (caused by Fusarium and Phytophthora species) is the most devastating disease
• Alternaria leaf blight and black spot are common foliar diseases
• Continuous cropping disease (replant disease) is the single greatest obstacle to production

Notoginseng root is one of the most important medicinal materials in traditional Chinese medicine.

Medicinal Uses:
• Classified as having sweet, slightly bitter, and warm properties in TCM theory
• Primary functions: disperses blood stops bleeding, reduces swelling, and alleviates pain
• Used to treat traumatic injuries, bruises, swelling, and various bleeding disorders (hemoptysis, hematemesis, epistaxis)
• Modern pharmacological studies have identified over 20 types of saponins (notoginsenosides), which exhibit anti-inflammatory, anti-thrombotic, cardioprotective, and neuroprotective properties
• Widely used in cardiovascular medicine — active compounds help dilate coronary arteries, reduce blood viscosity, and inhibit platelet aggregation
• Key ingredient in the famous Yunnan Baiyao formula, a proprietary hemostatic medicine

Commercial Forms:
• Dried whole root, sliced root, and powdered root
• Processed (steamed) root has different properties from raw root in TCM
• Extracts and standardized supplements are increasingly available internationally