4-6-4 organic fertilizer delivers a balance of nutrients, humates, compost-derived microbiology and slow release nitrogen in an easy-to-spread homogenous granule.

Suståne® 4•6•4 granular


Suståne 4-6-4 is an all natural, compost- based organic starter and maintenance fertilizer. It replenishes the soil with a rich supply of humus and all plant essential nutrients. Suståne 4-6-4 provides a balanced mix of slow release nitrogen and other nutrients derived from biologically stable compost, natural potash, and feathermeal.

Professional Grade 

Suståne Natural Fertilizer 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 products is recognized by growers from around the world.

Benefits of Natural Organic 4•6•4

  • Adds approximately 5% humates by volume, increasing cation exchange and organic matter
  • Increases nutrient and water holding capacity of the soil, strengthening plant tolerance to hot dry conditions
  • Promotes healthy root development
  • Improves buffering against changes in soil pH
  • Increases the soil’s ability to suppress plant pathogens
  • Increases soil aggregate stability, porosity, and quality for greater root development and water holding capacity

Safe for Plants, People & the Environment

  • Manufactured by Suståne in the USA at an EPA permitted facility
  • Pathogen and weed seed free
  • Derived from aerobically composted materials, so it won't attract insects or rodents to the application site
  • Contains compost-based microorganisms to help replenish life in poor soils
  • Fully tested and compliant with the national organic standards and the Food Safety Modernization Act requirements for fresh fruit and vegetable production


Specific Plant Applications

Crop Timing Application Method cups/100ft2 lb./1,000ft2 lb./acre
Small Grains at seeding in furrow n/a 1 50
Soybeans at seeding in furrow n/a 1 40
Field corn at seeding in furrow n/a 2 100
Apples/fruit trees annual broadcast 4.5 15 600
Brassicas* preplant incorporate 3 10 400
  3 wek. pre-crown set sidedress 6 20 800
Carrots preplant & 4wks later topdress 1.5 5 200
Curcubits (all vine crops) post plant incorporate 9 30 1,200
Garlic apply 3x per season topdress 1.5 5 200
Legumes preplant incorporate 6 20 800
Lettuce (head) preplant incorporate 6 20 800
  3 wk post transplant sidedress 9 30 1,200
Onions at transplant & at 10" ht topdress 3 10 400
Peppers and Tomatoes preplant incorporate 4.5 15 600
  3 wk post transplant sidedress 4.5 15 600
Potatoes at seeding direct on row 9 30 1,200
Sweet Corn preplant starter 3 10 400
  sidedress sidedress 4.5 15 600
Raspberries, year 1 at transplant banded on row 6 20 800
Raspberries, year 2+ spring application sidedress 9 30 1,200
Strawberries, year 1 at transplant & pre-runner in row 7.5 25 1,000
Strawberries, year 2+ at dormancy break topdress 12 40 1,600
Flowers pre or post plant broadcast 8 30 1,200
Tomatoes at transplant sidedress 3-4" away 17.2 57.4 2,500

*Includes broccoli, cauliflower, cabbage, kale, Chinese cabbage, bok choy, and mustard greens.

Suståne 4-6-4 Natural & Organic Fruit and Flower Plant Food is a slow-release nitrogen fertilizer made from biologically stable compost and other natural and organic ingredients. This product is recommended for use on both annual and perennial vegetables, fruits, flowers as well as in landscape beds, and potting soil mixes. 

Usage and Application Rates: For best results, water after application.  Application rates vary based on soil conditions, plant species and desired rate of growth.  It is recommended to have soil tested prior to applying any fertilizers.

New Garden Bed Preparation:  Apply 1 cup of Suståne for every 10 ft2 of bed space or 3 lb. per 100 ft2  (126 grams per m2). Incorporate into the top 4” (10 cm) of soil.

Vegetable Garden Rows:  Apply 1 cup of Suståne for every 10 ft of row length (45 grams per m).

Transplants and Established Plants:  Apply ¼ cup of Suståne into the hole prior to planting transplants. For established plants, topdress and work ¼ cup into the top 2”- 4” (5 - 10 cm) of soil around the base of the plant.  Application rates for specific plants are available at www.sustane.com.

Soil Mixes and Potted Plants:  Incorporate Suståne into the potting mix at a rate of 2 cups per cubic foot of mix (12 grams / cubic liter).

Coverage: 20 lb. covers 1,000 ft2. at 0.67 lb. of nitrogen per 1,000 ft2.

Item # 
Suståne 4-6-4
Package Size Units / Pallets
(2.8 mm - 1.4 mm) 

5 lb. bags

20 lb. bags 

8 bags case, 42 cases/ pallet

100 bags / pallet

4-6-4 Bulk Density

4 6 4 Agriculture Bulk Density

Guaranteed Analysis

Total Nitrogen (N)

  0.4% Ammoniacal Nitrogen
  0.4% Other Water Soluble Nitrogen
  3.2% Water Insoluble Nitrogen*
Available Phosphate (P(2O5) 6%
Soluble Potash (K2O) 4%
Calcium (Ca) 4%
Magnesium (Mg) 0.75%
Sulfur (S) 1%
Iron (Fe) 0.25%

Derived from aerobically composted turkey litter, feather meal, bone meal, and sulfate of potash.
*3.2% slowly available nitrogen from aerobically composted turkey litter and feather meal