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Alpha Centauri Elite Perennial Ryegrass

Alpha Centauri Elite Perennial Ryegrass

$65.00 CAD
$65.00 CAD
Sale Sold out

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  • Fast Germination
  • Top Rated
  • Dark Green
🌿 Germination: 6-8 days
🌱 Coverage
2 kg (4.4 lbs)
New lawn: ~500–625 sq. ft.
Overseeding: ~625–1,000 sq. ft.
5 kg (11 lbs)
New lawn: ~1,250–1,560 sq. ft.
Overseeding: ~1,560–2,500 sq. ft.
📐 Not sure about your lawn size? Here's how to measure it →
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💡 Leftover seed keeps well — great for spot repairs or touch-ups next season.

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Seeding Project Lawn Protector Sign

$7.00 CADFREE
Add SeedLaunch Pro and save $12.00 Starter fertilizer designed for the same day as your seed. SGN 150 mini-prill, 60% slow-release nitrogen. View 5kg bundle — $175 →

When to seed in Spring across Canada:

  • Vancouver / Lower Mainland: April onward
  • Southern Ontario / Montreal: Late April – May
  • Prairies: Mid-May – early June
  • Atlantic: May
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Same day / next day order processing (on weekdays)

Orders placed on weekdays are usually processed same-day or next-day. Orders placed on weekends will be processed on Monday.

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Orders ship from Toronto and typically arrive in 2-5 business days depending on your location. Orders going to Western Canada and the Maritimes can take a little longer, 5-8 business days.

30-Day Returns

Change your mind? We offer 30-day returns on unopened and unused items. Learn more.

Seeding rates

  • Seeding rate per 1,000 sqft: 3.5kg-4.5kg
  • New lawns: 3.5kg-4.5kg per 1,000 sqft
  • Overseeding existing lawns: 2kg-3.5kg per 1,000 sqft
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No Weeds | No Filler | Certified Elite Grass Seed

Dark Colour Without the Compromises

Perennial ryegrass is the fastest-germinating cool-season lawn grass, known for its fine texture and the clean, reflective shine it gives a freshly mowed lawn. In the last few years, dark colour has become the most sought-after trait in the category, with homeowners across North America seeking out specific cultivars that promise the deepest green possible.

But there's a trade-off most people don't see until it's too late. In the 2022 NTEP trial, the darkest-scoring perennial ryegrass cultivars (7.5+ on genetic colour) tend to rank near the bottom for dollar spot resistance, spring green-up, and overall turf quality. They look incredible in a trial plot photo. But in a Canadian backyard, where cosmetic pesticide bans mean you can't spray your way out of a disease problem and you need your lawn to survive winter and wake up fast in April, colour alone isn't enough.

Alpha Centauri sits in a different spot on that curve. It scores in the top third for genetic colour, with individual site scores as high as 8.0. But it also ranks #4 of 83 for dollar spot resistance and #8 of 83 for spring green-up. That combination (dark colour that also wakes up early and fights disease on its own) is rare in perennial ryegrass. Most cultivars make you choose. This one doesn't.

We introduced Alpha Centauri in 2025 and thousands of Canadian lawn enthusiasts have now seeded it across the country. The results have been outstanding.

Performance Data — NTEP Scores

Tested Across 20 Locations. Two Years of Data.

Every elite grass cultivar worth using has been through the National Turfgrass Evaluation Program (NTEP). It's a multi-year, multi-location trial run across universities and research stations in the U.S. and Canada. Cultivars are evaluated blind (no brand names, just plot numbers) and scored on quality, colour, density, disease resistance, and stress tolerance under real-world conditions.

NTEP uses a 1-to-9 scale, but scores above 7.0 are rare in practice. A 6.0 is considered acceptable. Anything above 7.0 puts a cultivar near the top of the field.

Alpha Centauri was evaluated in the 2022 NTEP National Perennial Ryegrass Test across 20 trial locations, with data collected in 2023 and 2024. Here's how it performed:

National Turfgrass Evaluation Program
2022 NATIONAL PERENNIAL RYEGRASS TEST
Alpha Centauri — Progress Reports 2023–2024
83 Entries • 20 Locations • 2 Years of Data
Genetic Colour Up to 8.0
Range of 6.0 to 8.0 across trial sites, 7.3 at Guelph
Turf Quality 7.1 at Guelph
Top 19% at Canada's only NTEP trial site
Dollar Spot #4 of 83
Top 5% — stronger than 95% of entries
Fall Density #3 of 83
Top 4%. Holds its thickness heading into winter
Germination 6–8 days
Fastest cool-season species to establish
NJ2 Adelphia (2024) #11 of 83
Top 13% for turf quality at this respected trial site

NTEP uses a 1-to-9 scale, but scores above 7.0 are rare in practice and anything above 7.0 puts a cultivar near the top of the field.

Data sourced from NTEP trial reports • ntep.org

NTEP Trial Site
Guelph, ON (ON1)

Guelph is the only Canadian trial site in the NTEP network, and it's where performance under Canadian conditions gets tested for real: freeze-thaw cycles, local disease pressure, variable winters, and the kind of summer heat and humidity that separates resilient cultivars from fragile ones.

In its second year at the Guelph Turfgrass Institute, Alpha Centauri scored 7.1 for overall turf quality, ranking in the top 19% of all 83 entries at this site. The highest-scoring cultivar at Guelph in 2024 was 7.4. Alpha Centauri is 0.3 off the top.

Its genetic colour score at Guelph was 7.3, higher than its trial-wide average of 6.8. Alpha Centauri is producing darker colour under Ontario growing conditions than its overall mean suggests.

Photo: University of Guelph
Guelph, ON (ON1)

FAQ

What's the difference between the Alpha Centauri Elite Perennial Ryegrass and the 100% Elite Perennial Ryegrass Blend?

We carry two perennial ryegrass options, and the main difference comes down to cultivar control versus blended performance.

Alpha Centauri Elite Perennial Ryegrass is a single-cultivar option — 100% Alpha Centauri, which is one of the top-performing ryegrasses we've trialled. We made it available on its own for customers who want more control over exactly what they’re putting into their lawns, whether for consistency, aesthetic, or reseeding purposes.

Elite Perennial Ryegrass Blend, on the other hand, includes a mix of three elite perennial ryegrass cultivars — and it actually contains 33% Alpha Centauri as part of the blend. Blends like this are often a great choice because using multiple cultivars can help create a more resilient lawn overall. Each cultivar brings different strengths (like disease resistance, colour retention, or stress tolerance), which can help the lawn handle variable conditions better.

Both options germinate quickly (usually in 6–8 days), and both are great for full sun or light shade.

Elite, Certified Grass Seed For Home Lawns

  • Elite Cultivars

    Trial-tested for their ability to deliver thick, dark green, disease-tolerant turf (not available in your local big box store).

  • Homeowner-Friendly Quantities

    Get the same premium seed turfgrass professionals use without having to buy enough to cover an entire fairway.

  • Delivered to Your Door

    No more hassle, phone orders, or driving for hours to obscure wholesale suppliers. Get the grass seed the pros use delivered right to your door.

  • Weed-Free, No Filler

    All bags contain 0.0% crop and weed seed, have a 90% minimum germination rate, and are certified quality seed with exceptional NTEP scores.

Elite, Certified Seed vs Common Seed

  • Elite grass seed benefits

    ✅ Superior Genetics: Bred for specific traits like disease resistance, drought tolerance, improved color, finer texture, and increased wear tolerance.

    ✅ Certified, Higher Purity: Tested and certified to ensure it contains a very high percentage of pure seed with minimal weed seeds or other crop seeds, leading to a more uniform lawn.

    ✅ Improved Germination Rates: Elite seeds have higher germination rates, meaning more seeds will sprout successfully.

    ✅ Increased Density: Results in a thicker, more lush lawn due to the superior genetics and purity.

    ✅ Better Performance: Exhibits better performance in terms of overall health, appearance, and resilience.

  • Common (Big-Box) Seed

    ✖︎ One-size-fits-all blends: Always contains some mix of ryegrass, bluegrass, and fescue offering less control and potentially leading to a less uniform appearance.

    ✖︎ Lower Purity: Typically contains a lower percentage of pure seed and a higher percentage of "filler" and weed seeds or other crop seeds.

    ✖︎ Variable Germination Rates: Germination rates can vary due to lower quality of seed.

    ✖︎ Lower Density: May result in a thinner lawn compared to elite seed.

    ✖︎ More Maintenance: May require more effort to maintain a healthy and attractive lawn due to potential weed issues and varying growth habits.

Striped Seed Co.

Alpha Centauri Elite Perennial Ryegrass

$65.00 CAD
$65.00 CAD
Sale Sold out
Choose Size
View full details

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Memberships & Associations

  • Ontario Turfgrass Research Foundation

  • Sports Turf Canada

  • Ontario Golf Superintendents' Association

  • Professional Lawn Care Association of Ontario