How to Read a Native Seed Tag (and Why It Matters)
When your project depends on successful revegetation, the most important document in the bag isn’t the invoice — it’s the seed tag.
These small white labels carry everything you need to know about the quality, purity, and compliance of the seed you’re planting.
But unless you know how to read them, you could miss the details that make or break a project.
Let’s walk through what’s on the tag — and what it means for your site.
What Is a Seed Tag?
Every native seed bag is required by law to include a seed tag, which serves as a standardized quality report.
It tells you:
- What species are inside
- How much of it is viable seed
- Where it came from
- And when it was last tested
At Bamert, these tags are more than a formality — they’re part of our transparency and traceability commitment. Every order, whether 1 pound or 10,000, leaves our facility with a tag that represents tested, verified, and regionally adapted seed.
Anatomy of a Native Seed Tag
Here’s what you’ll find on a tag — and why it matters.
1. Seed Company Information
At the top of every tag, you’ll see the seed company’s name, address, phone number, and permit number.
✅ Why it matters: If there’s ever a question about performance or testing, this ensures full traceability.
2. Kind and Variety
Lists the species name and variety — for example:
Grama, Sideoats “El Reno” (Bouteloua curtipendula)
If you see “VNS,” that means Variety Not Stated.
✅ Why it matters: This helps confirm your blend matches agency specs or bid requirements.
3. Lot Number
Each seed lot has a unique tracking ID (like Lot #0406511A), allowing every bag to be traced back to its exact field and test report.
✅ Why it matters: It’s how quality is verified across the supply chain.
4. Test Date
Shows when the seed was last tested by an independent lab.
In Texas, seed must be tested within nine months of sale. At Bamert, we retest every five months to meet or exceed compliance across multiple states.
✅ Why it matters: Fresh tests = reliable germination data.
5. Purity and Inert Matter
Purity tells you the percentage of seed that’s actually the listed species.
For example, the “El Reno” Sideoats Grama tag shows:
- Pure Seed: 98.59%
- Inert: 1.41%
- Other Crop: 0%
- Weed Seed: 0%
✅ Why it matters: High purity = fewer weeds, better establishment, and consistent coverage.
6. Germination and Dormant Seed
These values show the percentage of viable seed that will sprout under ideal conditions.
On the same tag:
- Germination: 91%
- Dormant: 5%
- Total Germination: 96%
✅ Why it matters: Adding these together gives you the total viable portion of your seed — which you’ll use to calculate Pure Live Seed (PLS).
7. Pure Live Seed (PLS)
PLS = Purity × Total Germination
For the Sideoats Grama example:
98.59% × 96% = 94.65% PLS
That means 94.65% of the bag contains live, viable seed that will produce plants.
✅ Why it matters: Ordering and planting seed by PLS ensures accurate coverage and predictable establishment.
What About Blended Seed Tags?
Blends list each component species separately — like Buffalograss “Texoka” and Blue Grama “Hachita” in our Native Turf Blend.
For each component, you’ll see:
- Species name and variety
- Purity (%)
- Germination (%) and Dormant (%)
- Origin and test date
But here’s the key difference from a single-species tag:
👉 PLS must be calculated for each species individually — not for the blend as a whole.
That’s because the percentages shown apply per species, not to the total bag contents. To get accurate seeding rates or determine how much live seed you’re actually planting, you need to calculate:
PLS = Purity × (Germination + Dormant) for each component species.
Need help with that?
📄 You can request a Tag Analysis Report from our team — it includes all the data you need to calculate PLS per species.
This extra step matters — especially when you’re seeding for compliance, wildlife outcomes, or restoration success.
Bulk Seed vs. PLS: What’s the Difference?
Ordering by bulk pounds means paying for total bag weight — viable seed, inert material, and all.
Ordering by PLS pounds means paying only for what can actually grow.
That’s why Bamert quotes and recommends seeding rates in PLS pounds — so your coverage, cost, and compliance line up with project goals.
For a deep dive on PLS vs bulk read this.
Legal Standards and Compliance
Seed labeling is regulated by both state and federal law.
In Texas, you can find the full requirements in:
- Texas Agriculture Code Chapter 61: Inspection, Labeling, and Sale of Agricultural Seed
- Chapter 62: Seed and Plant Certification
At Bamert, our seed testing and labeling practices not only meet these requirements — they exceed them.
Why It All Matters
Your seed tag is your proof of quality — and a critical compliance document for every reclamation or restoration project.
Understanding it helps you:
- Verify species and source
- Ensure purity and compliance
- Calculate PLS for accurate coverage
- Defend your project data during audits or inspections
Would you pour concrete without a strength test?
Then don’t plant seed without reading the tag.
📞 Need help reading a tag or converting specs to PLS?
Call 806‑639‑5232 or contact us here.
