Jonathan Green Contractor's Mix

  • Delivery Available with Online Checkout
  • Available In-store at Colchester Mackey's
  • Available In-store at Willimantic Mackey's
  • Available In-store at Woodstock Mackey's
  • Ideal for soil stabilization 
  • Use for temporary lawn seeding
  • Contains annual ryegrass which germinates in 7 - 10 days 
  • Grows in full sun to medium-shaded lawn areas

Jonathan Green Contractor’s Grass Seed Mixture is the ideal grass seed for soil stabilization or temporary lawn seeding. Contractor’s Mix contains annual ryegrass so it germinates quickly and provides a fast grass cover. It is most often used by new home builders to establish a lawn quickly because it provides an excellent value for the price. Contractor’s Grass Seed Mixture can be overseeded with any Black Beauty® Grass Seed Mixture to grow a lawn that will persist for years to come. This seed germinates in 7 – 10 days.

For the best results, follow the directions below for establishing a new lawn or overseeding an existing one.  


  • Mow – Mow the lawn at the lowest mower setting before seeding to allow the seed to reach the soil.
  • Rake  Rake over the existing grass with a metal rake to remove the thatch layer and any debris to loosen the soil.  Add additional topsoil to fill in holes and level the ground.  
  • Check soil pH level – Have a soil test taken to check your soil’s pH level. The optimum soil pH should be between 6.2 to 7.0.  For a pH below 6.2 use Jonathan Green MAG-I-CAL® Plus for Acidic & Hard Soil to rapidly increase pH. If the pH is above 7.0 use MAG-I-CAL® Plus for Alkaline & Hard Soil to rapidly decrease the soil pH.


  • When to apply – The best time to apply seed is mid-August to mid-October while the ground is still warm and the nights are cooler.  Mid-March through mid-May is the next best time to plant when the soil temperature reaches 55ºFahrenheit and the temperature of the air stays consistently warm.
  • Spread seed – Apply half of the seed with a rotary spreader in one direction (north to south) and the remainder in the opposite direction (east to west). It is beneficial to spread a new seeding fertilizer that is high in phosphorus at this time as well.
  • Rake seed – Rake lightly into the ground with a metal rake. Walk with light, even footsteps on the seedbed to firm the soil around the seed. Do not bury the seed more than one-fourth of an inch deep. 


  • Water – For best germination, water daily to keep the seedbed moist. Continue watering regularly for a few weeks until the grass plants reach a height of 2 – 2.5 inches. 
  • Mow – Begin mowing when the new grass has reached a height of 3 – 4 inches. Make sure the mower has sharp blades. Be careful not to scalp the lawn, low mowing will stress the root system and encourage the growth of weeds
  • Coverage:

    • 25 lb Bag
      • Overseeding – Seeds up to 6,500 sq. ft.
      • New Lawns – Seeds up to 3,250 sq. ft.
    • 50 lb Bag
      • Overseeding – Seeds up to 13,000 sq. ft.
      • New Lawns – Seeds up to 6,500 sq. ft.

    Grass Type:  Annual Ryegrasses

    Grass Color:  Green

    Recommended Planting Months:  For cool-season grasses

    • Mid-August through mid-October
    • Mid-March through mid-May  

    Sun Tolerance:  Good

    Shade Tolerance:  Fair

    Light Requirements:  Full sun to partial shade (4 – 8 hours of sun)

    Drought Tolerance:  Fair

    Insect & Disease Resistance:  Fair

    High Traffic Tolerance:  Fair

    Planting Depth:  ¼ inches

    Germination Time:  7 – 10 days

The spreader settings listed are approximate. Spreader condition, rate of walk, and humidity are just some of the variables that can affect the rate of application. Please refer to the product label link on this page, or the back of the bag, for further details along with application rates and precautionary statements. You may need to adjust settings for proper coverage if circumstances described on the label are applicable. In all cases, the user should read and follow label instructions before applying any product, and assumes all responsibility when using this spreader settings tool.

You recently viewed

Clear recently viewed