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

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SHIPPING INFORMATION: The price of shipping is included. Typically ships in 2-3 business days. We Cannot Ship to P.O. Boxes, or Alaska or Hawaii. Orders typically ships in 2-3 business days! Please be sure you get the right product and know what's in the bag you are ordering. We cannot take returns of seed because we cannot resell seed that has left our possession as we do not know how it was cared for while out of our hands. (moisture, sunlight, humidity).

85% Turf type tall fescue 15% Kentucky Bluegrass

  • Cool Blue prefers full sun but can tolerate some shade
  • Cool Blue grass seed requires watering to germinate
  • Cool Blue. should be cut between 3.5" and 4.5" tall
  • Cool Blue does best in the transition zone and north of the transition zone
  • Cool Blue has the ability to spread and fill in some due to the KBG mixed in

What's in the bag?

GCI Turf Cool Blue is a 4 way mixture of high quality Turf Type Tall Fescue and Kentucky Bluegrass seed. 85% Turf type tall fescue and 15% Kentucky Bluegrass.
We became known for having “weed free” grass seed and the new ones are no different. All the new grass seed mixes/blends are 0% weed seed and 0% other crop.

How long does grass seed stay good?

About 2 years if kept dry

We look for three basic things when choosing the varieties that go in our grass seed mixes/blends. It must be readily available to us, it must have an excellent history in the NTEP trials (National Turf grass Evaluation Program), and it must be affordable.

THOR: (Tall fescue) Top rated variety due to its excellent color, density, green up, and disease resistance. Thor has shown resistance to Brown Patch and Pythium Blight. Thor has exceptional dark green color, rated high in genetic and winter color. Aggressive tillering and excellent spring greenup makes it a great application for home lawns, parks, sod production, sports fields and commercial properties

BLACKTAIL: (Tall fescue) This variety provides superior density throughout the growing season in all parts of the US due to its aggressive tillering ability which also helps repair damaged areas of turf. Black Tail is a solid overall performer in traffic stress trials, fine leaf texture, and brown patch resistance. Black Tail aggressive tillering characteristic contributes to its dense, lush canopy.

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 an 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.

PLEASE NOTE: At some point CGI will receive additional loads of seed. The Thor and Black Tail listed above will no longer be in the new mix. These will be replaced with two comparable varieties listed below. The two replacement varieties are as follows:

Saltillo: Tall Fescue was developed by Pure-Seed Testing, Inc. It is a dark green cultivar with excellent summer turf performance. Saltillo was selected for salt tolerance and brown patch resistance. Saltillo has 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.

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. I only recommend spring time seeding when absolutely necessary.

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.


The trick to seed germination is KEEP THE SEED MOIST! Water multiple times a day, light and frequently every day to ensure the ground and seed stays 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.