Pacific Giant Vegetable Growers
- Organization whose members grow giant pumpkins and other vegetables. Site includes photos, event listing, and question/answer and shopping sections.
- http://www.pgvg.org/

McMinnville Garden Club
- Includes club activities, yard of the month, annual garden tour information, and newsletters. [Oregon]
- http://mcminnvillegardenclub.org

Hardy Plant Society of Oregon
- A non-profit volunteer organization for beginning, experienced, amateur, and professional gardeners.
- http://www.hardyplantsociety.org/