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


GCI Turf Cool Blue Tall Fescue/Kentucky Bluegrass mix

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

***When you make this purchase you will get a confirmation email. In that email is a link to a four page guide that goes into detail about planting your GCI Turf Cool Blue Grass Seed

***If you plan to buy this grass seed AND the Cool Season Guide…purchase the SEED FIRST. Inside the “grass seed guide” that comes with the grass seed you will find a private link that gives you 50% off the normal price of the Cool Season Guide

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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

A good starter fertilizer goes a long ways when it comes to seeding. Read this STARTER FERTILIZER GUIDE.

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

BLACK TAIL: (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.

BLUE COAT: (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. Can handle heavy traffic. Blue Coat mixes well with other Kentucky Bluegrass, Perennial ryegrass, fine fescue and tall fescue

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. To check your soil temperatures be sure and use a very high quality SOIL THERMOMETER to ensure accuracy. The fescue in Cool Blue TTTF/KBG seed will germinate 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. 


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