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Grand Slam Platinum™

Turf-Type Perennial Ryegrass Blend


Perennial Ryegrass is a cool season bunch grass that is native to Europe and is widely planted as both a pasture grass and turfgrass in the United States. Like tall fescue it spreads by shoots or tillers as opposed to bluegrass which
spreads by runners or rhizomes. In the 1970s new varieties were developed that were more acceptable for use as a turfgrass, hence the name “Turf-Type Perennial Ryegrass.” These ryegrasses are best suited to the northern and transition
climate zones as a permanent turf and in the southern, humid zones as a winter overseeding grass mainly on dormant bermudagrass. Perennial Ryegrasses are also pop-ular in seed mixtures with Kentucky Bluegrasses and Fine Fescues. With a
uniform fine texture and outstanding dark green color, Turf-Type Perennial Ryegrasses grasses exhibit excellent turf quality with little thatch buildup. They establish quickly and with favorable conditions can germinate in as little as 5
days. There are well over 200 varieties of Turf-Type Perennial Ryegrasses with various traits and characteristics. The varieties chosen for this blend have been tested, highly rated, and exhibit exceptional overall turf quality with
disease and drought resistance. It meets our platinum standards of superiority for variety quality and seed purity. Learn More.



  • Better heat and drought tolerance
  • Rapid tillering
  • Excellent seedling vigor
  • Grey Leaf Spot resistance
  • Endophyte enhanced
  • Improved mowability


  • Quickest establishment of cool season grasses
  • Good wear tolerance
  • Moderate shade tolerance


  • Improved summer performance
  • Excellent wear tolerance and recovery
  • Fast establishment
  • Less susceptible to warm weather disease
  • Improved insect and disease tolerance
  • Reduced shredding during mowing
  • Can get clumpy under heavy use
  • Higher water use


Because of its turf quality, low maintenance and drought tolerance, Grand Slam is an ideal choice for:

* Residential Lawns
* Golf Courses

* Playgrounds
* Sports Fields

* Parks
* Institutional Grounds

* Overseeding

Seeding Rates

New turf: 10 pounds per 1,000 square feet or 400 pounds per acre. Overseeding existing turf: 6 to 10 pounds per 1,000 square feet or 250-400 pounds per acre. Seed when soil temperatures are above 60⁰ at a depth of 1/4 inch. Best times
for seeding are early spring and early fall.


Emergence: 5-10 days under optimum temperature range between 68-86 degrees, longer under cooler temperatures. First mowing approximately 21 days after emergence, longer under cooler temperatures. First limited use approximately 28 days
after emergence.


GRAND SLAM™ Turf-Type Perennial Ryegrass Blend

ROYAL BLUETM Kentucky Bluegrass Blend
34% Pangea GLR Perennial Ryegrass
33% Paragon 2 Perennial Ryegrass
33% Grand Slam GLD Perennial Ryegrass

Platinum Quality (Exceeds Certified Quality Standards)
98% Minimum Purity
0.0% Crop and Weed Seed
90% Minimum Germination
250,000 seeds per pound

Note: Depending upon availability, alternate varieties of equal quality and standards may be substituted.
Varieties listed are protected under the US Plant Variety Protection Act. GRAND SLAM™ is a registered trademark of Stover Seed Company

Product Datasheet
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