partners


King County LHWMP is a regional program of local governments working together to protect public health and environmental quality by reducing the threat posed by the production, use, storage, and disposal of hazardous materials. We offer services to help residents and businesses reduce, safely handle, and properly dispose of hazardous materials and wastes.

King County LHWMP also provided funding in 2008 that helped facilitate the creation, development, and launch of IPMopedia.


King County LHWMP runs The EnviroStars Program that certifies businesses for reducing, recycling, and properly managing hazardous waste. The program was created in King County, Washington, in 1995 and has expanded to include many additional counties in the Puget Sound region.

Use the resource to find companies in Puget Sound that are making strides to protect the environment. This is a great place to find a certified landscaper that can help you design and maintain a healthy, green garden.




Seattle Public Utilities Green Gardening Program
The Green Gardening Program is sponsored by Seattle Public Utilities (and currently managed by Cascadia Consulting Group) in an effort to promote alternatives to lawn and garden chemicals. It is funded by the Local Hazardous Waste Management Program in King County.



Founded in 1978, Seattle Tilth is a nationally recognized nonprofit organization dedicated to cultivating a sustainable community, one garden at a time. In our demonstration gardens, as well as in P-Patches and other community gardens across the region, we teach people how to improve their environment by using organic gardening techniques.

Seattle Tilth inspires and educates people to garden organically, conserve natural resources, and support local food systems in order to cultivate a healthy urban environment and community.


Toxipedia is a free toxicological encyclopedia written by experts and edited for accuracy. Toxipedia presents scientific information in a clear and compelling way, offering articles and resources about toxic chemicals (such as pesticides and persistent pollutants), diseases, laws and regulations, consumer products, ethical issues, the history of toxicology, and more.

Toxipedia is a project of the Institute of Neurotoxicology and Neurological Disorders. INND is a nonprofit organization that distributes scientific information about the health and environmental impacts of toxic chemicals, thereby empowering the public and policy makers to make choices that create healthy communities and environments.



Urban Farm Hub is a news and information source for urban agriculture and food policy in the Puget Sound region. From national food policy news to urban farming resources to a local events calendar, Urban Farm Hub brings it all together in one place.



The Washington Toxics Coalition protects public health and the environment by eliminating toxic pollution. WTC promotes alternatives, advocates policies, empowers communities, and educates people to create a healthy environment.


Greengardening the start of a program

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