Organic Fertilizers: What Buyers Should Know
Organic fertilizer is made from composted plant and animal materials that improve soil structure, microbial activity, and long-term fertility. Buyers source organic fertilizers from China for cost-effective granules and pellets used in fruit orchards, vegetable farms, and organic agriculture.
The key specifications are organic matter content, NPK analysis, compost maturity, and heavy-metal limits. Fully fermented, weed-seed-free material matters for safe field use. The curated suppliers below are screened against these criteria.
Curated Suppliers — Organic Fertilizers
7 Checks Before Choosing a Organic Fertilizers Supplier
1. Organic matter
Confirm organic matter content (commonly 45%+) on the certificate of analysis.
2. NPK analysis
Check total N, P2O5, and K2O, which are lower than mineral fertilizers but release steadily.
3. Compost maturity
Fully fermented material avoids root burn and ammonia damage.
4. Heavy metals
Request test reports for Pb, As, Cd, Hg, and Cr to meet import limits.
5. Moisture
Low moisture (below 20%) prevents caking and reduces freight cost.
6. Granule form
Uniform 2-4mm granules spread evenly and suit mechanical application.
7. Certification
Confirm organic-input compliance such as OMRI or EU equivalents if required.
Frequently Asked Questions
What is organic fertilizer made of?
It is made from composted plant and animal materials such as manure, crop residues, and plant meals, sometimes with added beneficial microbes.
What NPK does organic fertilizer have?
Typical NPK is low, often around 4-4-4 or 5-5-5, but nutrients release slowly and improve long-term soil health.
Is organic fertilizer better than chemical fertilizer?
Organic fertilizer builds soil structure and microbial life, while chemical fertilizer feeds plants faster; many farms use both together.
What is the MOQ for organic fertilizer from China?
Usually 10-25 metric tons per order; see each supplier profile for exact MOQ and bag sizes.