Programs > Shoreline and Riparian Habitat Enhancement Services > Wetland Plant Cooperative > Wetland Plant Cooperative and Native Plant Holding Facility

Wetland Plant Cooperative
and Native Plant Holding Facility

A History of the Nursery Facility
Associated Restoration Projects

In 1997 the King Conservation District was awarded a $55,000 King County Water Quality Block Grant to create a Wetland Plant Cooperative that would address the increasing need for native wetland plants and the restoration community's desire for native plants grown from seed collected in local watersheds. Today, over 30 species of wetland plants are grown at the District's facility with an average annual inventory ranging from 10,000 to 15,000 individual plants.

Services Offered

The King Conservation District Wetland Plant Cooperative provides wetland emergent plants to individuals, organizations and agencies in trade for volunteer service at the nursery or in-kind contributions such as soil, lumber or pots. Community groups often have a stronger volunteer base than funding source. The Cooperative allows these groups to utilize their volunteers to receive plant material for wetland or salt marsh restoration project that otherwise could not be implemented due to lack of funding. It also allows larger organizations to expand their project size, knowing that the King Conservation District can partner on their projects by supplementing commercial nursery orders with additional local stock for their projects.

The Wetland Plant Cooperative also serves as an informal job training resource for local youth and adults. By volunteering at the nursery, youth and adults gain experience in horticulture, stream and wetland restoration and leadership skills. Youth groups that regularly visit our facility include Northwood Junior High School Environmental Science students, Renton High School Honor Society members and the Seattle Youth Involvement Network.

Recycled Materials Demonstration Site

The Wetland Plant Cooperative is also a recycled materials demonstration site, illustrating the benefits of using recycled materials in plant production. Our native plants are grown in GroCo, a commercial grade bio-solid product that is manufactured from the solid by-product of secondary sewage treatment. GroCo is a mixture of one part bio-solids and three parts fir and hemlock sawdust that has been composted for one year. The King County Department of Natural Resources, Wastewater Treatment Division, East Section Reclamation Plant donates reclaimed water from the wastewater treatment process to the Wetland Plant Cooperative for irrigation purposes. The water has been treated and disinfected in order to meet Washington State standards for use in landscape irrigation. Using reclaimed water allows the District to reduce the cost of purchasing water through the City of Renton Municipal water system and reduces the amount of potable drinking water wasted on landscape irrigation, thereby reducing the tax dollars that would have been used to treat over 200 gallons per day. The propagation beds used to raise native wetland plants are constructed from recycled plastic lumber called TREX and DuraBord. Nearly half the TREX utilized on the site was donated by the King County Commission for Marketing Recyclable Materials. TREX lumber consists of 50 percent hardwood tree waste and 50 percent plastic from polyfilm and plastic grocery bags. DuraBord lumber is recycled #2 high-density polyethelene plastic from milk jugs, shampoo bottles, yogurt containers, etc.

Primary Partners

Principle financial partners who make the Wetland Plant Cooperative program possible: Washington Conservation Commission, Puget Sound Water Quality Action Team, King County Earth Corps, and local volunteers Principle Project Partners: Washington Conservation Corps, Earth Corps, Northwood Junior High School, Washington Native Plant Society, People for Puget Sound, Mid Puget Sound Fisheries Enhancement Group and Renton High School Honor Society

Technical Support and Implementation

Over the years the Wetland Plant Cooperative has supported numerous estuarine, stream and wetland restoration projects by providing plant material to projects that otherwise would not have been implemented due to lack of funding. The Cooperative has also provided project design assistance to groups, agencies and organizations seeking technical expertise to help realize their restoration goals. Some of the projects we have supported are listed below.

1999
Cascade Park Planting Commencement Bay Middle Waterway Enhancement, WDFW & NOAA
Green River Natural Resource Enhancement Area, KCD & City of Kent
Tolt River Pipeline Project

2000
Carnation Marsh Enhancement, Seattle Audubon Society
Hazel Wolf Wetlands Enhancement, The Land Conservancy
Blue Heron Park Knotweed Control Project, KCD & City of Lake Forest Park

2001
Hazel Wolf Wetlands Enhancement, The Land Conservancy
Dickman Mill Salt Marsh Restoration, City of Tacoma
Rock Creek Buffer Enhancement, KCD & Rock Creek Landowner

2002
Black River Riparian Forest Heron Rookery Buffer Enhancement, KCD & City of Renton
Mt. Rainier High School Wetland Enhancement, KCD & Mt Rainier HS
Golden Gardens Wetland and Beach Enhancement, Seattle Parks & WNPS Native Plant Stewards

2003
Hamm Creek Salt Marsh Enhancement, People for Puget Sound
T-107 Salt Marsh Enhancement, KCD & People for Puget Sound
Hylebose Waterway Enhancement, NOAA & Friends for a Healthy Bay
Bioswale Enhancement Projects, KC Dept. Natural Resources & Parks

2004
Des Moines Creek Park Beach Enhancement, KCD & City of Des Moines
Duwamish Turning Basin Enhancement, Port of Seattle
Newaukum Creek Riparian Restoration, KCD & Mid-Puget Sound Fisheries Enhancement Group
Elm Tree Bioswale Enhancement Project, KCD & King County DNRP-WLRD< /p>

2005
Black River Riparian Forest Heron Rookery Buffer Enhancement, KCD & City of Renton
T-105 Salt Marsh Enhancement, People for Puget Sound
Saltwater State Park Creek Enhancement, Washington State Parks
Lexington Bioswale Enhancement Project, KCD & King County DNRP-WLRD

2006
Duwamish Barge Native Plant Education Project, Port of Seattle
T-107 Riparian Enhancement, People for Puget Sound
White Center Pond Enhancement, KCD & KC Small Habitat Restoration Program
Longfellow Creek Riparian Enhancement, Longfellow Creek Watershed Council

For more information, contact Brandy Reed
by phone at (425) 282-1924
or email at Brandy Reed