For contractors, property managers and turf pros, understanding how to read a seed label is essential to getting consistent results, avoiding setbacks and building long-term customer satisfaction.

What is a Seed Label and Why It Matters

A seed label is more than a list of contents – it is federally required label that details the quality, purity and performance potential of the seed you’re buying. Seed labels are required by law and follow a standard format to help professionals compare products and ensure they meet industry specs. 

Seed labels provide the information needed to verify the purity and germination of seed in the bag. SiteOne is committed to ensuring that each customer fully understands the product, its ingredients and its role in overall turf maintenance.

Key Components of a Grass Seed Label

There are many essential components of seed labels and it’s important to understand what each one means for your project. 

1. Species and Variety
This section of the label identifies the exact species and (when applicable) variety of seed in the bag. It includes names such as - Tall Fescue, Perennial Ryegrass, Kentucky Bluegrass, Chewings Fescue, Creeping Red Fescue, Hard Fescue, Bentgrass, etc.

SiteOne Pro Tip: Proprietary varieties often offer better disease resistance, color and drought tolerance compared to generic seed.

2. Pure Seed
This section indicates the percentage by weight of the seed in the bag. It is exclusive of inert matter and all other seed that is not what is indicated on the tag.

SiteOne Pro Tip: A higher percentage is better. Look for seed with a purity rate above 90% to ensure you’re getting what you pay for.

3. Germination Rate
The germination rate section of a seed label indicates the percentage of seed that is live and capable of germinating under favorable conditions. A higher germination rate generally means more seed will sprout and lead to a more uniform and denser stand.

SiteOne Pro Tip: Look for products with a higher germination rate, typically of 85% or more, to avoid having to overseed more heavily.

4. Inert Matter
This section refers to the percentage of non-seed materials present in the seed. This includes materials such as sand, soil, seed coatings, chaff or seed parts that do not germinate or contribute to plant growth.

SiteOne Pro Tip: A lower percentage of inert matter is desirable, as it indicates a higher proportion of actual seeds in the package.

5. Weed Seed Content
Weed seed is the percentage of seeds that are not pure seed or crop seed on the tag. A lower weed seed content signifies higher purity.

SiteOne Pro Tip: You want this percentage to be as low as possible. This is especially important for all landscape applications.

6. Test Date
The Test Date on a seed label indicates the month and year the seed was tested for germination. This is crucial because seed viability decreases over time, and this date helps ensure the seed has been recently tested for germination.

SiteOne Pro Tip: Each state has different requirements for test date. SiteOne provides a sell by date on their tags to make this easily identifiable.

Quick and Final Thoughts

• Always check the seed label before purchasing or applying.
• Store seed in a cool, dry place to preserve germination.
• Avoid mixing seed bags with different specs unless advised by a turf expert.
• Pay attention to Test Dates to ensure you’re using the most up-to-date blend(s).
• Be sure to always keep a record of the lot number purchased and planted on property. The lot number is always clearly notated on the tag. This helps trace back seed testing if it is necessary.

Choosing the Right Seed with SiteOne

At SiteOne, we know every property and project is different. That’s why we offer a wide range of premium LESCO® turfgrass seeds, including proprietary blends, regional mixes and solutions tailored to your specific climate and soil conditions. For our recommendations on seed, check out our Regional Seed Guides. 

Need help matching the right seed to your project? Our turf experts can help you interpret labels, choose the best product and even recommend applications. Visit your local SiteOne branch today to get the assistance you need.