SoundGRO® is the natural choice fertilizer product for your landscaped areas and vegetable gardens. SoundGRO® is a slow-release fertilizer that contains nutrients and micronutrients that are vital for the healthy growth of your plants.
SoundGRO® fertilizer is manufactured at the Chambers Creek Regional Wastewater Treatment Plant and is made from solids that are removed from the wastewater treatment process known as biosolids. SoundGRO® meets the U.S. Environmental Protection Agency's (EPA) highest standards for biosolid safety and is classified as Class A "Exceptional Quality" product.
SoundGRO® is a safe and effective fertilizer that can be used immediately or stored in a cool, dry place such as a garden shed or garage. It has many benefits over chemical fertilizers, including:
Slow-release formula works over a longer period of time, decreasing the need for frequent fertilizing
Low salt index can be applied even in the hottest, driest weather without risk of burning your plants
Improves soil structure
Contains trace nutrients
SoundGRO® is a not-for-profit program of Pierce County Planning and Public Works.