Milorganite - 6-4-0 Fertilizer - 50 LB BAG

Milorganite - 6-4-0 Fertilizer - 50 LB BAG
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Milorganite - 6-4-0 Fertilizer - 50 LB BAG

SKU: 260005
  • Sold Individually. Manufacturer Pallet Size = 40
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Only available for sale in our authorized territories in IA,IL,IN,KS,MI,MN,MO,ND,NE,SD,WI Restrictions may apply. Call (800) 785-3301 with any questions
  • 6% Total Nitrogen (N), 4% Available Phosphate (P205), 2.5% Total Iron (Fe)
  • Non-Burning Iron for Greening
  • Slow Release feeds the plant & soil
  • Feeds up to 10 Weeks

Milorganite is an all-purpose slow-release nitrogen fertilizer that can be used safely on lawns, flowers, vegetables, shrubs and trees, as well as a carrier when spreading grass seed. Each bag feeds for up to 10 weeks delivers primary nutrients Nitrogen and Phosphorus to plants as well as important micro-nutrients that plants need to develop.

All Purpose

Milorganite is an all-purpose organic-nitrogen fertilizer composed of heat dried microbes that have digested the organic matter in wastewater. It can be used on lawns, shrubs, trees, flowers, vegetables and as a seed carrier. See back for recommended application guidelines.

Does Not Burn

Milorganite’s salt free formula will not burn plants or scorch lawns even in the hottest temperatures and driest conditions.

Slow Release – Feeds up to 10 Weeks

Milorganite releases its nutrients slowly and feeds plants and soil on a constant basis resulting in uniform growth and well-established root systems.

Doesn’t have to be Watered-In

Milorganite doesn’t need to be watered in after application. It’s ready to work when moisture arrives, making it ideal for areas with water restrictions.

Iron for Enhanced Greening

Iron is essential to make plants green. Greening power is what you’ll get from Milorganite—our iron is organically complex and readily absorbed by plants. Milorganite even works in poor soils, regardless of soil pH, and will NOT stain nearby walks, patios, drives, fences or walls.

Seeding with Milorganite

Add Milorganite when seeding for a fast-developing lawn. The nitrogen releases as the seedlings need it. The non-leaching phosphorus is available to immature roots to aid in giving energy to support fast growth, and won’t burn tender seedlings.

Safe for Children and Pets

Milorganite is tested daily and surpasses the EPA’s “Exceptional Quality” standards—the most stringent safety regulations in the fertilizer industry. Children and pets can safely go onto areas that have been fertilized with Milorganite.

Adds Organic Matter

Organic matter in Milorganite feeds microorganisms in the soil, improving the foundation which plants grow. Enriching the soil with organic matter improves soil structure which improves the soil’s capacity to hold water and nutrients. Healthy soil is the long-term key to lawn and garden success.

Application Guidelines

For best results, 4 lawn applications per year are recommended. Please see the back for lawn, flower, vegetable, fruit, tree, and shrub application schedule and rates.

Active Ingredient: Heat-dried microbes that have digested the organic matter in wastewater

Use Sites:

  • Lawns
  • Shrubs and trees
  • Flowers and vegetables
  • Seed carrier


  • Not applicable


(Kentucky Bluegrass, Fescue, Perennial Ryegrass)
Four Applications - 36 LBS per 2,500 SQ FT

  • Memorial Day (late Spring)
  • 4th of July (mid-Summer)
  • Labor Day (early Fall)
  • Thanksgiving (Dormant Feeding)

Apply last application as late in the season as possible before the first deep freeze or snow fall. This fertilizer application is known as dormant feeding. Fertilizing this late in the season will allow for an early spring green up.


72 LBS per 2,500 SQ FT Seed Bed or Sodding Preparation
Mix into the top two inches of soil before seeding or sodding. After third mowing of lawn, apply one 36 LB bag per 2,500 SQ FT of lawn. Then follow the normal schedule for your particular type of grass.

See Label for complete application instructions.


See Label for complete restrictions.

Download SDS