Frequently Asked Questions about Suståne Natural Fertilizers

The Organic Materials Review Institute (OMRI) is an international nonprofit organization that determines which input products are allowed for use in organic production and processing. OMRI Listed^® products are allowed for use in certified organic operations under the USDA National Organic Program. Learn more at omri.org

It is perfectly safe for your pets to be on your lawn after our fertilizer products have been applied. However, we do recommend storing your fertilizer aways from pets and children, since the ingestion of any non-food item can cause gastrointestinal issues.

For maximum effectiveness in weed suppression, corn gluten meal should be applied in the early spring, just prior to weed seed germination. This will occur when soil temperatures reach approximately 50° F (10° C) but may vary depending on your local climate. It also best to apply prior to a rain event or water in after application. For enhanced weed suppression, corn gluten meal can also be applied in the fall in addition to spring applications.

Suståne Natural Organic products such as 4-6-4, and 8-2-4 have a 45 days release rate.Natural-Based products such as Suståne 16-4-8 has two formulations, (noted in the product titles) are 160 day and 180 day release formulations. Suståne 18-1-8 is also a 180 day release formula.

Each and every Suståne product has a Specification Sheet PDF download on the correlating product webpage, by market. On the back of each two page PDF, listed in both Metric and Imperial measurement, basic application rates are listed for the varying uses for the product. Please find the product by market and go the webpage and listed below each product images are the links for each Specification Sheet. Please review details about how best to apply Suståne. If you have more specific questions, contact This email address is being protected from spambots. You need JavaScript enabled to view it..

For commercial users, you can find a list of distributors in your area here: https://www.sustane.com/distribution

For retail products, or for home garden use, a list or retailers can be found here: https://www.sustane.com/retail-stores

A select number of our products can also be found on Amazon:https://www.amazon.com/