GCI Turf Cool Blue Turf Type Tall Fescue/Kentucky Bluegrass Grass Seed | GCI

Trust Badge


GCI Turf Cool Blue is a 4-way mixture of high-quality Turf Type Tall Fescue and Kentucky Bluegrass seed.  

  • This seed is 85% Turf Type Tall Fescue and 15% Kentucky Bluegrass 
  • Requires watering to germinate 
  • Prefers full sun but can tolerate some shade
  • Does best in the transition zone and north of the transition zone
  • Should be cut between 3" and 4.5" tall
  • Has the ability to spread and fill in some due to the KBG mixed in

    Product Description: 

    GCI is proud to be known for having “weed-free” grass seeds, 0% weed seed, and 0% other crop. They look for three basic things when choosing the varieties that go in their grass seed mixes/blends. It must be readily available to them, it must have an excellent history in the NTEP trials (National Turfgrass Evaluation Program), and it must be affordable. 

    Here’s what you can expect in your GCI Turf Cool Blue: 

    • Saltillo: Tall Fescue was developed by Pure-Seed Testing, Inc. It is a dark green cultivar with an excellent summer turf performance. Saltillo was selected for salt tolerance and brown patch resistance. Saltillo has a very good heat tolerance and resistance to brown patch, and gray leaf spot.
    • Coronado TDH: Tall Fescue was developed by Pure-Seed Testing, Inc. It is a dark green cultivar with excellent drought tolerance. Coronado TDH requires less water to stay green longer than other tall fescues under drought stress. Coronado TDH has good heat tolerance and resistance to brown patch, and gray leaf spot.
    • FALCON IV: (tall fescue) Falcon IV is a new and improved, heat and disease resistant, tall fescue variety developed for superior turf quality across a wide area of adaptation. It is dark green in color, fine textured with excellent wear tolerance. Falcon IV exhibits a unique combination of traits including dense growth, improved turf quality, and resistance to brown patch. Falcon IV is endophyte-enhanced tall fescue.
    • MIDNIGHT: (KBG) A unique Kentucky Bluegrass cultivar that produces a dense, fine leaf turf with dark green color and superior disease resistance. It also provides a dark green color, fine to medium leaf texture, and excellent density during the growing season. Midnight mixes well with other Kentucky Bluegrass, Perennial ryegrass, fine fescue, and tall fescue.

    How much seed to use?

    • Overseeding into an existing poor lawn: Six - eight (6-8) pounds per 1000 square feet.
    • Overseeding into an existing nice lawn: Three - six (3-6) pounds per 1000 square feet.
    • Seeding bare ground: Eight - ten (8 -10) pounds per 1000 square feet.

    When should you plant Cool Blue TTTF/KBG?

    Fall is a great time to seed Cool Blue TTTF/KBG. Plant Cool Blue TTTF/KBG seed when soil temperatures are between 50° and 65°F. Your air temperature should be around 60° to 75°at this time. The fescue in Cool Blue TTTF/KBG seed will take anywhere from 4 - 10 days to germinate. The KBG seed will need more time to germinate because it takes anywhere from 14-30 days to germinate. Mid August - Mid October is a great time frame depending on where you live in the country and what your soil and air temperatures are. Patience is required while waiting on KBG to sprout. Don’t get consumed by waiting on the KBG...it will come. We only recommend springtime seeding when absolutely necessary.


    The trick to seed germination is to KEEP THE SEED MOIST! Water multiple times a day, light and frequently every day to ensure the ground and seed stay moist. Cool Blue TTTF/KBG seed can take anywhere from 4 to 10 days to germinate depending on environmental conditions. Be patient...it will come up with time. Once you have germination you can slowly revert back to watering 1” per week...deep and infrequent. During hot, dry weather established Cool Blue TTTF/KBG may need as much as 1.5” - 2” of water per week.

    Shipping Information: 

    Shipping Costs

    Included for most states within the U.S.

    NO P.O. Boxes

    State Restrictions

    Alaska (AK), and Hawaii (HI)


    Sorry, no stickers with this item.

    Typical Delivery Time

    4 - 7 business days

    Product Type

    Grass Seed 

    Cancel | Return | Exchange

    All sales are final, no cancellations, returns, or exchanges