Sustane® 50 lb. 8-2-4 Medium Grade All Natural Fertilizer

★★★★★ 4.8 131 reviews

$36.29
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Product details

Management number 232232269 Release Date 2026/06/21 List Price $14.52 Model Number 232232269
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Apply Suståne® 8-2-4 granulated fertilizer whenever you're looking for a natural, budget-friendly way to kick-start lawns and gardens. The 8-2-4 (4-1-2) NPK ratio is an excellent base for spring turfgrass fertilization and is also beneficial for the establishment or reestablishment of vegetation and bedding plants. With a slow-release formula that includes organic humus to provide dense, balanced macro- and micronutrients, Suståne fertilizer will feed crops for at least 45 days and can sustain its release for up to 12 weeks. It also improves soil stability and adds resistance to pathogens, arid environments and pH changes.

Greenhouse Megastore has 50-pound bags of Suståne 8-2-4 fertilizer for large home lawns and gardens as well as commercial landscaping. It's OMRI-listed as 100% organic for in-ground soil, potting mixes or general maintenance and has already been fully composted so you don't need to sterilize it before application.

Recommended Use:

For use in the production of certified organic gardens, turfgrass and landscape maintenance, greenhouse bedding plants and annual establishment, erosion control, native reestablishment and soil reclamation and remediation.

Benefits:

  • Rich in humic acids
  • Medium Grade: 200 SGN (2.8-1.4 mm)
  • Increases the nutrient and water-holding capacity of the soil.
  • Strengthens a plant's tolerance against hot dry conditions.
  • Promotes greater root development.
  • Improves buffering against changes in soil pH.
  • Increases the soil's ability to suppress plant pathogens.
  • Increases soil porosity and stability for greater root development and water-holding capacity.
  • Always safe for plants, people, pollinators and the environment.
  • Manufactured by Suståne in the U.S. at an EPA-permitted facility.
  • Pathogen and weed-free, no blood or bone products. Allowed for export to over 60 countries worldwide.
  • Aerobic composting eliminates animal and rodent attraction to the application site.
  • Contains naturally occurring beneficial bacteria and fungi that are necessary to begin the nutrient life cycle in poor soil.
  • Suståne is fully composted, eliminating the need for sterilization and permitting a healthy environment for beneficial microbial populations.

Guaranteed Analysis:

Total Nitrogen (N) 8.0%
Ammoniacal Nitrogen 0.40%
Water Soluble Organic Nitrogen 0.40%
Water Insoluble Organic Nitrogen* 7.20%
Available Phosphate (P2O5) 2.0%
Soluble Potash (K2O) 4.0%
Calcium (Ca) 2.0%

Total Plant Nutrition:

Iron 0.50%
Manganese 0.05%
Zinc 0.05%
Humic Acid 6.00%
Organic Matter 65.0%
pH 6.8
Carbon : Nitrogen (C:N) 4:1
Bulk Density lb./cu. ft. 38
% of Total N as Slow-Release 90.0%

Derived from aerobically composted turkey litter, feather meal, and sulfate of potash.
*7.2% slowly available nitrogen from aerobically composted turkey litter and feather meal.


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