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Suståne 4-6-4 fertilizer is an organic slow-release fertilizer and soil builder ideally suited for plant establishment as vegetation starter for low P soils. Suståne 4-6-4 is specifically formulated to be gentle on plants, making it a go-to fertilizer for spreading with seed and applying to seedlings.
Suståne 4-6-4 works by replenishing the soil with a rich supply of humus (stabilized organic matter) and the essential nutrients required for sound and long term fertility programs. Suståne 4-6-4 provides a combination of slow-release nutrients and organic substances that improve soil health. Derived from biologically stable compost plus natural potash and feather meal.
Landscapers’ Choice
Professional landscapers, groundskeepers, and turfgrass managers have turned to Suståne 4-6-4 for use on high maintenance turf and landscaped environments. While synthetic fertilizers supply plant growth nutrients, they do not supply the organic matter required to maintain quality growth. Using fully composted natural fertilizers increases the levels of beneficial microbial activity, which in turn converts nutrients into plant-available forms.
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Total Nitrogen (N) 0.4% Ammoniacal Nitrogen0.4% Other Water Soluble Nitrogen 3.2% Water Insoluble Nitrogen* |
4% |
| Available Phosphate (P(2O5) | 6% |
| Soluble Potash (K2O) | 4% |
| Calcium (Ca) | 4% |
| Magnesium (Mg) | 0.75% |
| Sulfur (S) | 1% |
| Iron (Fe) | 0.25% |
| Iron | 0.5% |
| Manganese | 0.05% |
| Zinc | 0.05% |
| Humic Acid | % |
| Organic Matter | 50% |
| pH | 6.8 |
| Carbon: Nitrogen (C:N) | 4:1 |
| Bulk Density lb./cu. ft | 36 |
| % of Total N as Slow Release | 80% |
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

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| Label | Spec Sheet | MSDS | OMRI Certificate |
Suståne Concentrated Compost provides the benefits of nutrient-rich compost in a concentrated dry form. Suståne Concentrated Compost is easy to apply and replenishes the soil with a rich supply of stabilized organic matter and essential nutrients required for quality growth. Suståne Concentrated Compost provides a combination of plant nutrients and organic substances derived from biologically stable aerobic compost.
For use as a general soil builder, erosion control, reclamation, bio-remediation, revegetation, and building or disturbed or depleted soils. Native establishment and soil reclamation and remediation and in the production of certified organic crops.
| Total Nitrogen (N) | 2.0% |
| 0.2% Ammoniacal Nitrogen | |
| 0.2% Water Soluble Organic Nitrogen | |
| 1.6% Water Insoluble Organic Nitrogen* | |
| Available Phosphate (P2O5) | 2% |
| Soluble Potash (K2O) | 2% |
| Calcium (Ca) | 4% |
| Magnesium | 1% |
| Humic Acid | 10% |
| Organic Matter | 60% |
| pH | 7.0 |
| Carbon: Nitrogen (C:N) | 9:1 |
| Bulk Density lb./cu. ft | 38 |
| Moisture content | 5% |
| % of Total N as Slow Release | 80% |
| Electrical Conductivity | <10dS/m |
| Cation Exchange Capacity (C.E.C.) | 104 meq/100g |
Derived from aerobically composted turkey litter.
*1.6% slowly available nitrogen from aerobically composted turkey litter
(Hydroseeding: Mix with water solution at a ratio of 4 lb. Suståne 2-6-3 to 1 gallon of water or 2 tons per 1,000 gallon tank)
Soil Remediation: For bio-remediation, forest re-establishment & extreme situations where top soil has been removed or badly damaged.
Suståne Concentrated Compost is intended as a general soil builder for broadcast application and improving soil organic matter levels, cation exchange capacity and enhancing and diversifying soil biological activity levels.

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Suståne 8-2-4 natural and organic fertilizer which provides a balanced feed that promotes a rapid and vigorous vegetative establishment with 6 - 12 weeks of nitrogen in the organic slow-release form. Suståne replenishes the soil with a rich supply of humus (stabilized organic matter) and all of the primary, secondary and minor nutrients essential for quality growth. Suståne 8-2-4 provides a combination of dense plant nutrients and organic substances derived from biologically stable compost plus natural sulfate of potash and feather meal.
Suståne 8-2-4 provides a safe, simple, and cost-effective feeding solution for all types of crops. 8-2-4 provides balanced nutrition from seed through harvest. Suståne 8-2-4 is the perfect fertilizer for when you need significant quantities of organic slow-release nitrogen with low burn potential. Great for specialty crop production in high-quality soils or potting mixes.
Suståne 8-2-4 is a complete package fertilizer containing Slow Release Nitrogen, chelated micronutrients, organic phosphorous, and humic substances. Suståne 8-2-4 has been demonstrated time and again to surpass synthetic turf starter fertilizers and other sources of humates and plant biostimulants.
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.
| Crop | Timing | Application Method | cups/100ft2 | lb./1,000ft2 | lb./acre |
|---|---|---|---|---|---|
| Apples/fruit trees | annual | broadcast | 1 lb. per 1" tree dia. | 1 lb. per 1" tree dia. | 1 lb. per 1" tree dia. |
| Brassicas* | at transplant & 4 leaf stage | broadcast | 1.4 | 4.6 | 200 |
| 2 wk. pre-crown set | sidedress | 2.6 | 8.63 | 375 | |
| Carrots | at planting & 4wks pre-harvest | sidedress | 0.7 | 2.3 | 100 |
| Curcubits (all vine crops) | post plant | in row | 4 | 13.8 | 600 |
| Garlic | apply 3x per season | sidedress | 0.8 | 2.6 | 113 |
| Grasses/Forages | preplant | broadcast | 3.8 | 12.7 | 550 |
| post emerge | broadcast | 8.6 | 28.7 | 1250 | |
| Legumes | preplant | broadcast | 3 | 10 | 440 |
| Lettuce-high density (12-18") | at transplant & after 2 wks | sidedress | 7.8 | 25.8 | 1,125 |
| Lettuce-low density (30") | at transplant & after 2 wks | sidedress | 4 | 12.9 | 563 |
| Onions | at transplant & at 10" ht | sidedress | 0.8 | 3.2 | 140 |
| Peppers | at transplant & pre-blossom | sidedress | 1.2 | 4 | 175 |
| Potatoes | at seeding | direct on row | 5.7 | 19 | 825 |
| Raspberries, year 1 | at transplant | banded on row | 2.8 | 9.2 | 400 |
| Raspberries, year 2 | spring application | broadcast over row | 1 | 3.5 | 150 |
| Small Grains | at seeding | direct with seed | 0.3 | 1.0 | 44 |
| Strawberries, year 1 | at transplant & pre-runner | in row | 1.7 | 5.8 | 250 |
| Strawberries, year 2 | at dormancy break | broadcast over row | 1.0 | 3.5 | 150 |
| Sweet Corn, early | starter | sidedress | 2.8 | 9.2 | 400 |
| at layby | sidedress | 1.4 | 4.6 | 200 | |
| Sweet Corn, mid-season | at planting | sidedress | 2.8 | 9.2 | 400 |
| Squash, hollow stem | pre or post plant | broadcast | 3.5 | 11.5 | 500 |
| Tomatoes | at transplant | sidedress 3-4" away | 8.6 | 28.7 | 1,250 |
*Includes broccoli, cauliflower, cabbage, kale, Chinese cabbage, bok choy, and mustard greens.
Suståne 8-2-4 is a complete package fertilizer containing Slow Release Nitrogen, chelated micronutrients, organic phosphorous and humic substances. Suståne 8-2-4 has been demonstrated time and again to surpass synthetic turf starter fertilizers and other sources of humates and plant biostimulants.
Preplant - Broadcast and Incorporate into the top 4 in. (10 cm) of soil
Postplant (45-60 days) - Broadcast and water in
Professional landscapers have increasingly turned to Suståne 8-2-4 for use on high maintenance turf and landscaped environments. While synthetic fertilizers supply plant growth nutrients, they do not supply the organic matter required to maintain quality growth. Using fully composted natural fertilizers increases the levels of beneficial microbial activity, which in turn converts nutrients into plant-available forms.
Sustane 8-2-4 provides a constant release of nutrients 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 Rates by Volume | |||||
|---|---|---|---|---|---|
| lb. per cubic yard | kg per cubic meter | ||||
| Low | Med | High | Low | Med | High |
| 5.5 | 10 | 15 | 3.3 | 5.9 | 8.9 |
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 medium feeding species; on most nursery stock and foliage plants; and when liquid feed is not performed concurrently.
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%).
| Rounded Measure (Volume) | Grams (weight) | ||||
|---|---|---|---|---|---|
| Teaspoon (tsp) | Tablespoon (Tbsp.) | 1 oz. | 1/4 cup | 1/2 cup | 1 cup |
| 2.8 | 8.5 | 17 | 34 | 68 | 136 |
| Container Size | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rate | 5" Std. | 6" Std. | 1 gallon | 2 gallon | 3 gallon | 5 gallon | 7 gallon | 10 gallon | 15 gallon |
| Low | 3 | 6 | 7 | 15 | 28 | 45 | 63 | 77 | 82 |
| Med | 7 | 13 | 19 | 39 | 67 | 108 | 140 | 186 | 200 |
| High | 10 | 18 | 28 | 59 | 104 | 165 | 237 | 285 | 306 |
| Total Nitrogen (N) | 8% |
| 0.8% Ammoniacal Nitrogen | |
| 0.8% Water Soluble Organic Nitrogen | |
| 6.4% Water Insoluble Organic Nitrogen* | |
| Available Phosphate (P2O5) | 2% |
| Soluble Potash (K2O) | 4% |
| Calcium (Ca) | 2.00% |
| Iron (Fe) | 0.1% |
| Magnesium (Mg) | 0.5% |
| Sulfur (S) | 1% |
| Humic Acid | 6% |
| Organic Matter | 65% |
| pH | 6.8 |
| Carbon:Nitrogen (C:N) | 4:1 |
| Bulk Density lb./cu. ft | 38 |
| % of Total N as Slow Release | 90% |
Derived from aerobically composted turkey litter, feather meal, and sulfate of potash.
*6.4% slowly available nitrogen from aerobically composted turkey litter and feather meal

Suståne Compost Tea Bags / Root Zone Feeder Packs| SDS |
Label (21 g) Label (RZF) |
OMRI Certificate | Specification Sheet |
There are multiple benefits to using compost teas. More than supplementary nutrients, compost teas deliver humic substances that can act as biostimulants and active microorganisms that can contribute to nutrient cycling and the ecology of healthy soil.
Using compost teas may reduce the need to apply pesticides. Many reports indicate that compost teas increase plant tolerance to biotic and abiotic stresses, reducing the need for other inputs.
21-gram Compost Tea Bags/Root Zone Feeder Packs:
The permeable fertilizer packs are left to steep in a watering can overnight to make a Compost Tea brew for topical application or placed in the soil during transplant as a Root Zone Feeder Pack. 21-gram Suståne Compost Tea Bags provide single-dose applications of Suståne organic slow-release nitrogen fertilizer, designed to provide organic plant nutrition in a completely biodegradable filter pack.
Sustane 5 lb. Compost Tea Bags are ideal for larger-scale operations and are reusable organic cotton bags, which each make 50-100 gallons.

Compost tea is the result of adding high-quality compost that is rich in beneficial micro-organisms to water with the presence of oxygen and allows it to “brew”. When these microbes are provided with water, oxygen, and a food source the start to multiply rapidly, populating the “tea” with billions of beneficial microbes.
Microbiology from aerobic compost provides numerous benefits to plants and soil. Beneficial micro-organisms compete for resources with the disease-causing bacteria (pathogens) resulting in less disease pressure and healthier plants.
The microbes also go to work converting the nutrients from the compost to water-soluble, plant-available form. This process makes the organic nutrients more readily available and easier for plants to take up. Soluble nutrients result in a faster response from the plant. Some composts are very rich in nutrients resulting in a tea that works as a fertilizer as well as a soil enhancer. Other composts have very little nutrients and do not provide enough plant food alone.
Making high-quality compost tea can be difficult as composts tend to vary significantly in quality. Poorly made compost may contain minimal beneficial micro-organisms and could potentially carry harmful pathogens that could multiply when the compost tea is brewed. Low numbers of microbial populations or the presence of harmful pathogens are often the result of “compost” that was made without oxygen present (anaerobic) or did not have the proper ratio of carbon to nitrogen (C:N) to reach a temperature sufficient to kill harmful pathogens.
Download or view a simple set of instructions to Brew Suståne Compost Tea in your own Backyard.
At the end of the brewing cycle, the water is teeming with beneficial micro-organisms and plant-available nutrients. This water can be sprayed over the plant leaves and roots and used to drench the soil. Plants treated with compost tea will generally look fuller, brighter, and with less disease pressure. Make an enriched compost tea for superior results. Once brewed, it blends well with Suståne’s Hi-N 12-0-1 WDF OR Suståne’s Flourish 8-2-4 WDF to make an enriched compost tea with superior characteristics!
Step 1:Place 1 Suståne 21-gram Compost Tea Bag into the water can (generally 1 teabag per 1 gallon of water). The water should be between 60 and 100 degrees Fahrenheit.
Add an inexpensive fish tank aerator and turn on periodically to keep the water aerated. CAUTION: do not leave the aerator running unattended as the brew may foam and could overflow the watering can.
Allow the compost tea to sit (or steep) for at least 12 - 24 hours. This allows time for the microbial populations to multiply and breakdown the organic nutrients.
Apply to plant leaves and roots. Apply the normal amount of water as you would when watering the plant.
Download or view a simple set of instructions to Brew Suståne Compost Tea in your own Backyard.
| Total Nitrogen (N) | 3% |
| 0.3% Ammoniacal Nitrogen | |
| 0.3% Other Water Soluble Nitrogen | |
| 2.4% Water Insoluble Nitrogen* | |
| Available Phosphate (P2O5) | 5% |
| Soluble Potash (K2O) | 3% |
| Calcium (Ca) | 4% |
| Magnesium (Mg) | 1% |
| Sulfur (S) | 1% |
| Iron (Fe) | 0.5% |
Derived from aerobically composted turkey litter.
*2.4% slowly available nitrogen from aerobically composted turkey litter.
Contains 50,000 Colony Forming Units (CFU’s) per gram of the following species:
Bacillus amyloliquefaciens..........................................10,000 CFU’s per gram
Bacillus subtilis...........................................................10,000 CFU’s per gram
Bacillus pumilus..........................................................10,000 CFU’s per gram
Bacillus licheniformis..................................................10,000 CFU’s per gram
Bacillus megaterium...................................................10,000 CFU’s per gram
| Total Nitrogen (N) | 4% |
| 0.4% Ammoniacal Nitrogen | |
| 0.4% Other Water Soluble Nitrogen | |
| 3.2% Water Insoluble Nitrogen* | |
| Available Phosphate (P2O5) | 6% |
| Soluble Potash (K2O) | 4% |
| Calcium (Ca) | 4% |
Derived from aerobically composted turkey litter and feather meal
*3.2% slowly available nitrogen from aerobically composted turkey litter and feather meal.
Contains 50,000 Colony Forming Units (CFU’s) per gram of the following species:
Bacillus amyloliquefaciens..........................................10,000 CFU’s per gram
Bacillus subtilis...........................................................10,000 CFU’s per gram
Bacillus pumilus..........................................................10,000 CFU’s per gram
Bacillus licheniformis..................................................10,000 CFU’s per gram
Bacillus megaterium...................................................10,000 CFU’s per gram