Well-balance and Nutrient dense granular formulated for strong vegetative growth


Suståne 8-2-4 provides a safe, simple, and cost-effective feeding solution. 8-2-4 provides balanced nutrition from seed through maturity. Suståne 8-2-4 is the perfect fertilizer for when you need significant quantities of organic slow-release nitrogen with low burn potential.

Professional Grade 

Suståne Natural Fertlizer is backed by over 30 years of independent applied research on diverse crops and ecosystems. Unmatched by any other organic fertilizer manufacturer, such research is the foundation for developing products that deliver value under a wide variety of growing conditions. The superior performance of Suståne's products is recognized by growers from around the world.

Benefits of Suståne 8-2-4 All Natural, Slow-Release Nitrogen Fertilizer
  • Formulated to deliver a optimal mix of macronutrients 
  • Supplies a balanced mix of secondary and micronutrients 
  • Adds approximately 6% humic acid for enhanced cation exchange capacity and a source of carbon
  • Increases nutrient and water holding capacity of the soil
  • Can be applied at higher N rates than other organic fertilizers
  • Enhances plant stress tolerance in any environment or soil type
  • Formulated with aerobic compost to support natural soilborne disease suppression 
  • Supports soil particle aggregation, increasing permeability and nutrient cycling
  • Improves soil health
Safe for Plants, People and the Environment
  • Manufactured by Suståne in the USA at an EPA-permitted composting site and OMRI-approved manufacturing process.
  • Fully tested and compliant with the Food Safety Modernization Act requirements for fresh fruit and vegetable production
  • Formulated for high nutrient use efficiency and reduced risk of nutrient run off

Landscape Coverage

50 lb. covers 4000 ft2 @ 1 lb. N per 1000 ft2 (44 lb2 N per acre)
22.67 kg covers 372 m2 @ 0.5 kg N per 100 m2 (50 kg N per hectare)
12.5 lb. per 1000 ft2 / 6.25 kg per 100 m2

Garden Beds

Broadcast and incorporate 6 to 12 lb. per cubic yard of soil up to the date of planting. Side dress crops during the growing season, gently raking in granules to assure good soil contact. Apply monthly using 1 to 2 cups per 100 ft2 of growing space.

Potting and Container Mix Soils

8-2-4 is recommended for growing vegetables, fruits, and flowers in all types of potting mixes. Incorporate up to the day of planting based on plant need, watering regime and pottin mix recipe.  Use 6 lb. (low rate) 10 lb. (medium rate), or 15 lb. per cubic yard (high rate). Top dress every 3 to 6 weeks to encourage continual growth. See Suståne Greenhouse and Nursery brochure for details.

Fertilizer Maintenance for Large Trees

Once trees have become well established, apply Suståne into holes punched into the ground within tree crown drip line. Once the tree has developed a 4-6 inch diameter, increase application rate to 0.75 lb. of Suståne per inch of tree trunk diameter. 

Suståne Integrated Soil Management Program
Turf Establishment, Seeding, New Lawn Construction, Laying Sod and Sprigging

Preplant - Broadcast and Incorporate into the top 4 in. (10 cm) of soil
25 lb. per 1,000 ft2 or 2,200 lb. per acre
12.5 kg per 100 m2 or 1,250 kg per hectare

Postplant (45-60 days) - Broadcast and water in
12.5 lb. per 1,000 ft2 or 1,100 lb. per acre
6.25 kg per 100 m2 or 625 kg per hectare

Mix with water solution at a ratio of
2 lb. Suståne 8-2-4 to 1 gallon of water / 1 ton per 1,000 gallon tank
For 44 lb. of N per acre apply 550 lb.
For 90 lb. of N per acre apply 1100 lb.
For 130 lb. of N per acre apply 1700 lb.

Soil Preparation

Light, High Sandy Soil: 3 lb. per 100 ft2 of bed
(15 kg per 100m2)
Medium, Clay Loam Soil: 2 lb. per 100 ft2 of bed
(10 kg per 100m2)
Heavy, Silty, Clay Loam: 1 lb. per 100 ft2 of bed
(5 kg per 100m2)


Store in a cool, dry place. Do not expose to moisture or extreme temperatures. For best results, use by expiration date printed on label.

Item # 
Suståne 8-2-4
Package Size Units / Pallets
(1.4 .mm - 0.6 mm) 
30-55-1375 (international)
50 lb. bags
1-ton tote 
22.7 kg bags 
40 bags / pallet
1 tote / pallet
44 bags / ISPM pallet 
(2.8 mm - 1.4 mm) 
30-55-1175 (international) 
50 lb. bags
1-ton tote 
22.7 kg bags 
40 bags / pallet
1 tote / pallet
44 bags / ISPM pallet


Total Nitrogen (N)

     0.8% Ammoniacal Nitrogen
     0.8% Other Water Soluble Nitrogen
     6.4% Water Insoluble Nitrogen*
Available Phosphate (P(2O5) 2%
Soluble Potash (K2O) 4%
Calcium (Ca) 2%
Magnesium (Mg)
   0.01% Water soluble Magnesium (Mg)
Sulfur (S) 1%
Iron (Fe) 0.1%

Derived from aerobically composted turkey litter, feather meal, bone meal, and sulfate of potash. 
*6.4% slowly available nitrogen from aerobically composted turkey litter and feather meal