Label Spec Sheet MSDS

12 12 12MED50lb 600wide

Natural Organic + Coated Controlled Release Fertilizer

Designed for Professional Greenhouse and Landscape Applications
90 - 120 Day Nutrient Release at 70º F


Suståne 12-12-12 was developed as a combination fertilizer to provide all floral and nursery stock with a complete, balanced, and controlled release nutrient package. Suståne 12-12-12 provides plant essential nutrients in both controlled release and slow-release organic form by combining coated CRF with nutrient-rich aerobically composted turkey litter. The Suståne organic component undergoes a 26-week aerobic composting process ensuring that the finished product is stabilized yet biologically active.

The controlled release portion of the material is made from industry-leading polymer-coated urea, polymer-coated mono-ammonium phosphate, and polymer-coated potassium nitrate. Nutrient release rates from Suståne 12-12-12 are based on soil or substrate temperature and microbial activity. The sophisticated two mechanism release matches plant nutrient requirements over the production cycle and prevents the dumping of nutrients.

Recommended Use:

Suståne 12-12-12 is perfect for production of bedding plants other short term annuals. Greenhouse growers can use Suståne 12-12-12 to grow beautiful Begonias, Petunias, Impatiens, Geraniums, Caladiums, Chrysanthemums, herbs and vegetable crops.

Features of Suståne 12-12-12:

  • Suståne® 12-12-12 provides 12 - 16-week nutrient release in containers.
  • Suståne® Organic+CRF produces predictable results, dependable performance, and high-quality plants.
  • Designed, tested, and proven to provide equal or superior growth results compared to similar formulations (1-1-1 ratio) of nursery industry standards.
  • Suståne® Organic + SumicoatTM Controlled Release Fertilizers (CRF) are the new generation in environmentally friendly plant nutrition with minimal impact on the non-target environment.
  • Enhances soil-plant nutrient exchange increasing uptake efficiency.
  • Low burn potential, nutrients release gradually over time.
  • Suståne® 12-12-12 supplies all primary, secondary, and micronutrients required for complete plant photosynthesis.

Benefits of Suståne 12-12-12

  • Rich in humic acids
  • Increases the nutrient and water holding capacity of the soil
  • Strengthens plants 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, and the Environment

  • Manufactured by Suståne in the USA 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, permitting a healthy environment for beneficial microbial populations.

Suståne® Enhanced with SumicoatTM Controlled Release Fertilizer

SumicoatTM Controlled Release Fertilizers are polymer-coated controlled-release fertilizers initially tested and developed for the rice production markets in several different climates in Japan. Sumicoat products have been used for years to release precisely the right amount of fertilizer to optimize plant growth. For the past several years Suståne has been evaluating different Sumicoat release products blended with Suståne organics to create the optimal nursery and greenhouse fertilizer combinations. Suståne and Sumicoat have been proven through years of research to provide the winning combination that will not under or over-release.

Guaranteed Analysis

Total Nitrogen (N) 12%
2.3% Ammoniacal Nitrogen*
2.9% Nitrate Nitrogen*
1.3% Water Insoluble Nitrogen**
5.3% Urea Nitrogen*
0.2% Other Water Soluble Nitrogen
Available Phosphate (P2O5) 12%
Soluble Potash (K2O) 12%
Calcium (Ca) 2.00%
Magnesium (Mg) 0.5%
Sulfur (S) 1.5%
Iron (Fe) 0.2%
Manganese (Mn) 0.05%

Total Plant Nutrition

Humic Acid  
Organic Matter 45%
pH 6.8
Carbon: Nitrogen (C:N) 2:1
Bulk Density lb./cu. ft 42
% of Total N as Slow Release 90%

Derived from aerobically composted turkey litter, polymer-coated urea, polymer coated potassium nitrate, polymer-coated mono ammonium phosphate, ureaform, feather meal, and sulfate of potash
*10.3% controlled-release nitrogen derived from polymer-coated urea, polymer-coated potassium nitrate, and polymer-coated monoammonium phosphate.
**1.3% slow-release nitrogen derived from aerobically composted turkey litter, ureaform, and feather meal.

Available Particle Sizes:

  • Medium Grade, 200 SGN (2.8 mm - 1.4 mm)


  • 50 lb. covers 6,000 ft2 @ 1 lb. N per 1,000 ft2 (44 lb. N per acre)
  • 22.67 kg covers 544 m2 @ 0.5 kg N per 100 m2 (50 kg N per hectare)


  • Apply 6.25 lb. per 1,000 ft2
  • Apply 32 g per 1 m2

Incorporating into Potting Soil Mixes and other Container Substrates:

Suståne 12-12-12 90-day provides constant release of nutrients for approximately 90-days when used with container substrates with an average temperature of 70oF / 21oC. When determining application rates consider all cultural practices including irrigation, container substrate physical characteristics, and growing environment.

Container Mix Application Rates:

Container Mix Rates by Volume
lb. per cubic yardkg per cubic meter
4.5 8.5 14 2.6 5 8.3

Landscape Application Rates by Area
lb. per 1,000 square feetkg per 100 square meter
8 16 25 3.9 7.8 12.2

Bulk Density of Suståne 4-2-2:

Container Mix Rates by Volume
Rounded Measure (Volume)Grams (weight)
Teaspoon (tsp)Tablespoon (Tbs)1 oz1/4 cup1/2 cup1 cup
3.5 10.5 21 42 84 168

Container Topdressing Application Rates in Grams:

Rate5” Std.
(12 cm)
6" Std.
(15 cm)
1 gallon
(3.5 L)
2 gallon
(7.6 L)
3 gallon
(11.3 L)
5 gallon
(19 L)
7 gallon
(26.5 L)
10 gallon
(37.8 L)
15 gallon
(56.8 L)
Low 3 4 6 13 23 37 53 64 69
Med 6 10 15 33 56 90 117 155 167
High 8 15 23 49 86 138 200 238 255

Low Rate: Recommended for use on salt sensitive species; when concurrent with liquid feed with production systems utilizing low leaching fractions (less than 10%) and when applied to heavy potting substrates (total porosity less than 65%).

Medium Rate: Recommended for use on salt sensitive species; when concurrent with liquid feed with production systems utilizing low leaching fractions (less than 10%) and when applied to heavy potting substrates (total porosity less than 65%).

High Rate: Recommended for use on heavy feeding species; with production systems utilizing high leaching fractions (greater than 20%); and when applied to light, porous substrates (total porosity greater than 80%).

  • These rates are intended as guidelines. Suståne encourages a trial prior to changing any fertilizer program.
  • Do not steam sterilize container mix after fertilizer has been incorporated.
  • Do not store container mix more than two weeks after incorporating fertilizer. Plant material can be damaged from salt accumulation.
  • Monitor electrical conductivity (EC) of container substrate throughout production cycle.
  • If mix is stored longer than two weeks, leaching container mix may be required to remove accumulated salts.
  • Adjust application rate as needed.