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The Power of

Why It Matters for Breeders, Growers, and Consumers

What is Certified Seed?

Certified seed is the foundation of a productive and sustainable agricultural system. Certified seed is seed of a known variety produced under strict seed certification standards to maintain varietal purity. Seed lots must also meet specified standards for other crops, inert matter, weed seeds, and germination. Certified seed is also free of prohibited noxious weed seeds. All certified seed must pass field inspection, be conditioned by an approved seed conditioning plant, and then be sampled and pass laboratory testing before it can be sold as certified seed.

Using certified seed benefits growers, consumers, and the environment by:

  • Ensuring High Yields
    Certified seed is bred for optimal performance, leading to better germination, stronger plants, and higher crop yields.
  • Improving Disease Resistance
    These seeds undergo stringent quality control, reducing the risk of crop failure due to disease or pests.
  • Promoting Sustainability
    By maintaining genetic purity, certified seed helps preserve biodiversity and supports long-term agricultural productivity.
  • Boosting Food Security
    A healthy, disease-free crop ensures a more stable food supply for consumers worldwide.

What is the importance of Certified Seed?

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The Certification Process for Seed Worldwide

United States

United States

The certification process for seed ensures that only high-quality, genetically pure, and disease-free seed is available to farmers. While the specifics may vary by country, the general process follows strict regulatory standards.

In the U.S., seed certification is overseen by the Association of Official Seed Certifying Agencies (AOSCA) and individual state seed certification agencies. The process includes:

Variety Approval – A new seed variety must be approved and meet specific breeding and genetic standards before certification.

Field Inspections – Certified inspectors evaluate fields to ensure the crop is grown under controlled conditions, free from contamination and unwanted genetic traits.

Laboratory Testing – Seed samples are tested for germination rates, genetic purity, moisture content, and the absence of weeds or pathogens.

Bagging and Labeling – Once a seed lot passes inspection, it is sealed and labeled with official certification tags, such as the Blue Tag Certification, ensuring its authenticity.

Globally

Globally

Different countries and regions have their own seed certification systems, often aligned with international standards set by organizations such as the International Seed Testing Association (ISTA) and the Organisation for Economic Co-operation and Development (OECD) Seed Schemes. Canada’s system is called Canadian Methods and Procedures for Testing Seed, or just Canadian M&P.  These global standards help facilitate trade and ensure seed quality worldwide by requiring:

Harmonized Testing Methods – Laboratories around the world follow ISTA protocols for germination, purity, and viability testing.

Government and Private Oversight – Some nations have government-led certification programs, while others rely on private agencies under government regulation.

Stringent Documentation – Certified seed must have traceable records from production to sale, ensuring transparency and compliance with seed laws.

By following these rigorous certification processes, both in the U.S. and globally, farmers can trust that they are using high-quality, performance-tested seeds that contribute to better harvests and sustainable agricultural growth.

What is the process of seed certification?

Bagging & Tagging

Food Processor
Commercial Farmer
Seed Testing

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Seed Cleaning
Rouging
Field Inspection
Isolation
Sanitation / Clean Out
Grower Field Selection
VRB Eligibility Met
Parent Seed
Multiplication
Variety Development
Certified Seed in the Value Chain
The first step in the process that relates to AOSCA is a peer review process for varieties to meet eligibility guidelines in place by the Federal Seed Act.

All varieties eligible for seed certification must be reviewed by NVRB, PVP, a University/Ag. Experiment Station, a member agency’s internal process, or OECD. AOSCA houses a national variety review board, including the 6 AOSCA VRB crop groups.
AOSCA Variety Review Board
This process for each review board is completed annually (sometimes 2 times per year, depending on the crop).

1. Breeders complete an application that go through the VRB
2. The VRB committee reviews the applications and, if they meet the criteria, recommends eligibility. Note: the VRB does not “approve” varieties.
3. Once eligibility is received the varieties can be eligible for seed certification in any seed certification program.

The process is to review varietal eligibility based on the requirements of the FSA using a peer-reviewed system.
Grower Field Selection and Inspection
This starts with the grower selecting the field, ensuring all facilities and equipment are cleaned, monitoring their crop for off types and roguing (if found), and finally having all fields inspected prior to harvest by an AOSCA member agency.


All inspectors analyze at each field in the program against AOSCA and state agency standards. Items that are checked include, but not limited to: Isolation, Field History, Off Types, and Field Standards. An inspection report containing this information is issued for each field prior to harvest.

Seed Cleaning, Testing, and Tagging
Once inspected, seed is harvested and cleaned. A sample is then drawn from all certified seed lots for seed analysis. Note: Analysis may be based on ISTA, AOSA, or Canadian M&P methodology.

Seed analysis reports are sent to the AOSCA member agency where they are reviewed with standards for approval. Once passing lab reports are obtained, each lot of seed is tagged with an official AOSCA label prior to entering the value chain.

Official labels can be white, purple, or blue depending on the class of seed and will always state the inspection agency and "Member of the Association of Official Seed Certifying Agencies".
Commercially Farmed and Processed
After tagging, the seed is available for purchase giving seed buyers with assurance that the designated seed has met purity standards related to a known description across seed lots and years of production.

Seed Certification is a process based on a third-party approach of tracking and inspecting seed from the time it enters a certification program at the breeder stage until it is tested and tagged for sale.

AOSCA Agencies provide unbiased field inspection on phenotypic characteristics of each variety, conditioning plant inspections, and laboratory testing. The system allows for an unbiased record-keeping system that meets federal and state requirements.

How do you identify certified seed?

Blue Tag Certified

The highest quality standards in the seed industry is certified seed. Certified seed can be identified with a white, purple, or blue tag. When you see a certified tag on a bag of seed, it guarantees that:

    • The seed has been officially inspected and meets the highest purity and quality standards.
    • It is free from prohibited weeds and contaminants that could harm crops.
    • The genetic identity of the seed variety is preserved, ensuring consistency in growth and performance.

Why Choose Certified Seed?​

Choose Blue Tag Certified

For growers, using certified seed means investing in reliability and performance. For consumers, it means confidence in the food they eat. Whether it’s wheat, soybeans, corn, or other crops, certification supports a healthier, more resilient agricultural system.

By choosing certified seed, we are investing in the future of farming—one seed at a time.

For Breeders

Benefits for Plant Breeders

– A Breeder’s Perspective –

For Growers

Certified seed doesn’t cost, it pays!

While certified seed may have a higher initial cost compared to non-certified alternatives, the return on investment is undeniable. Here’s why:

Things to Consider When Sourcing Seed​

When you are in the market for seed you are making a big decision where so many factors are not in your control.  However, when you choose a variety that has been grown through a certification program and tagged with a blue tag you do have assurances for seed quality such as germination and purity. Compounding those attributes, all varieties prior to being grown in a certification program have been through a peer-reviewed system of varietal eligibility. This process ensures a distinct, uniform, and stable variety. 

Higher Yields and Quality

The superior genetics and purity of certified seed lead to stronger plants and better crop performance, resulting in increased profits.

Reduced Input Costs

Certified seed minimizes the need for additional treatments, such as pest and disease control, ultimately saving farmers money in the long run.

Consistent and Predictable Performance

With certified seed, farmers can rely on uniform growth, maturity, and harvest timing, reducing variability and enhancing marketability.

– A Grower’s Testimonial –

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Benefits for Consumers and End Users