Seed and Sod Application Rates

A hand holding grass seed, which can be mised with Milorganite fertilizer for better results.

When seeding your lawn or laying sod add Milorganite to accelerate development. The salt-free formula will never burn tender new seedlings and the iron generates a deep lasting green.

Milorganite Rates to Seed, Sod or Sprig (lbs/1,000 sq ft)
Soil Type Seeding & Sodding Sprigging
Sand 50-100 lbs* 50-100 lbs*
Native soil 25-50 lbs* 25-50 lbs*

*Use the higher rates for grass types that prefer higher nitrogen (Kentucky bluegrass or Bermuda grass) and in soils with low organic matter that have very infertile root zones.

Overseeding with Milorganite

Mixing grass seed with Milorganite is an effective way to spread seed accurately. Mix 4 parts Milorganite with 1 part seed by weight. If you choose to mix Milorganite and seed, be careful to decrease future applications of Milorganite to prevent over-fertilization.

Seeding a New Lawn or Filling in Bare Patches with Milorganite

Spread grass seed and Milorganite mix evenly on the prepared soil. Gently work the seed and Milorganite mix into the soil 1/16 to 1/8 of an inch. Light (sandy) soils may only require watering for seed incorporation.

Keep the seeded area moist until the seeds emerge. The seedlings need frequent gentle watering until ½ to 1 inch tall. When conditions allow, reduce watering to several time a week at a depth of 1 to 2 inches. Decrease frequency and increase depth of watering as seedlings mature.

Milorganite Seed Mixing Chart
Seed Type Milorganite (lbs) Seed (lbs) Seed per 1,000 sq ft Area Covered (sq ft) Milorganite per 1,000 sq ft
Bentgrass 20 5 1 lb 5,000 4 lbs
Bermuda Grass 20 5 1 lb 5,000 4 lbs
Blue Grass 100 25 4 lbs 6,250 16 lbs
Blue-Rye Mix 100 25 6 lbs 4,250 23 lbs
Rye Grass 100 25 8 lbs 3,250 30 lbs

Sodding with Milorganite

Milorganite should be mixed into the top 2-4 inches of soil before laying sod to help establish and feed the roots.

After laying new sod, water enough to penetrate the sod and 2 inches of the existing soil. From day 2 on, keep your sod and soil moist throughout the day. The roots are short so the sod cannot take large amounts of water at any single time. Other than the first day, the ground under the sod should never be soggy. Usually watering 4 to 6 times during the day, for approximately 5 to 6 minutes each time, is required until the roots are established. Root establishment will usually begin within 7 to 14 days.

After 2 weeks reduce the frequency of times you water at a gradual pace. You can confirm the establishment of the roots by pulling up a corner of the sod, and if you feel some resistance, you can begin tapering off the frequency of watering until you are watering only once per day. Deeper, less frequent watering will help roots stretch down deeper and establish quickly into the soil. Once fully established, a lawn needs approximately 1 inch of water per week.