Matrine (Ku Shen)
Quick Facts
- Type
- Botanical alkaloid
- Source
- Extracted from the roots of Sophora flavescens (Ku Shen) — a foundational herb in traditional Chinese medicine and Chinese organic farming
- OMRI Listed
- No
- Bee Safe
- Yes
- Pet Safe
- Yes
- Residual
- 7-14 days; relatively stable for a botanical
- Best For
- Broad-spectrum pest control in organic farming. Popular in Chinese greenhouse production.
What Is Matrine (Ku Shen)?
Alkaloid compound that blocks insect nicotinic acetylcholine receptors, causing paralysis and death. Also acts as a feeding deterrent and growth regulator. Used in Chinese agriculture for over 2,000 years. Modern formulations standardize the matrine content for consistent results.
Source: Extracted from the roots of Sophora flavescens (Ku Shen) — a foundational herb in traditional Chinese medicine and Chinese organic farming
What Pests Does Matrine (Ku Shen) Kill?
Matrine (Ku Shen) is effective against the following pests:
How to Apply Matrine (Ku Shen)
Best for: Broad-spectrum pest control in organic farming. Popular in Chinese greenhouse production.
Avoid for: US commercial operations requiring EPA-registered products.
Residual activity: 7-14 days; relatively stable for a botanical
Safety Profile
| Category | Rating |
|---|---|
| Bee Safety | 🟢 Safe for bees |
| Pet Safety | 🟢 Safe for pets |
| Overall Rating | Caution — Use with caution — timing and technique matter |
Why Isn't Matrine (Ku Shen) Working?
If Matrine (Ku Shen) isn't delivering results, check these common failure modes:
Not widely available in Western markets — sourcing can be difficult
Regulatory status varies by country — not EPA-registered in the US
Quality varies enormously between Chinese manufacturers
Limited Western research despite extensive Chinese literature
Best Matrine (Ku Shen) Products
Various Chinese agricultural brands
EC formulationAvailable through Chinese agricultural suppliers; check import regulations