Suståne produces a full line of compost-based fertilizers that effectively feed plants and improve the quality of potting mixes. Suståne’s fertilizers have been proven safe and effective to use in indoor and outdoor growing operations and are backed by over 30 years of independent applied research on diverse crops and ecosystems. Several formulations are also USDA Biobased Certified and listed as allowable for use in certified organic farming.

Suståne’s fertilizers deliver slow release fertility, naturally, through the actions of beneficial microorganisms inhabiting the composted material. This slow release mechanism assures that plant nutrients and humates are released efficiently into the plant root zone, reducing waste and maximizing yields.