Ecological design principles have been the basis for many commercially-available, plant-based engineered systems for water treatment such as Living Machines, Eco-Machines, and Lake Restorers. Applications of these principles have been rapidly evolving into new technologies for treatment of rainabarrels, stormwater, greywater, irrigation run-off, and agricultural wastewaters. This course will provide foundations of ecological design, from which you can begin to develop your own systems. Designed for water quality professionals, urban stormwater managers, nursery growers, horticulture or landscape design students, Master Gardeners, and pond enthusiasts.  The day will begin with a 2-hour lecture on ecological design concepts and various applications for plant-based water treatment. A tour of the "Rogue Six-Pack" will allow participants to examine up-close a truck-sized model of a plant-based water treatment system in tanks. Participants will then collectively build a table-top version of a tank system and put it to work. The table-top system will live at The Oregon Garden for research and demonstration. The day will conclude with a tour of the Oregon Garden's treatment wetlands and an innovative floating wetland that integrates ecological water treatment with nursery crop production.

• Paul Kay and Renee Stoops, instructors.
• 8 a.m.-5 p.m., Saturday, September 26.
• The Oregon Garden, Educational Building.
• $108, includes lunch and admission to the garden.