Organizations
- National Trust for Historic Preservation
- Northwest Horticultural Society
- Pacific Northwest Garden Conservancy Forum
- Seattle Friends of Olmsted Parks
Other Resources
- Center for Urban Horticulture
- Ciscoe Morris
- Garden Forever
- History Link
- National Register of Historic Places
- Pacific Horticulture
- Rainyside Gardeners
- Seattle Plant Exchange
Blogs
- Valerie Easton
- Garden Mentors
- Shed Style (Debra Prinzing)
Gardens
- Bellevue Botanical Garden
- Bloedel Reserve
- Kruckeberg Botanic Garden
- Kubota Garden
- Lakewold Gardens
- Miller Garden
- Seattle Chinese Garden
Nurseries