Bonsai Societies and Organizations

Nurseries/Supplies/Bonsai Stores (inclusion does not imply endorsement by BonsaiCollector.com)
Evergreen Gardenworks
Plant City Bonsai
Matsu Momiji Bonsai Nursery
Bonsai Site
International Bonsai
BonsaiWeb
Misho Bonsai
Brussels Bonsai
American Bonsai Nursery
Bonsai West
Lotus Bonsai Nursery
Manhattan Bonsai
Shanti Bithi Bonsai
Green Thumb Bonsai
Koyama Bonsai

Resources
Bonsai Wiki
USDA (National Arboretum collection)
Tropical Bonsai
BonsaiWeb
Bonsai Network Japan
Bonsai Secrets Resources

Collecting trees
Stefan Strand's collected trees
Digging collected trees
Collecting trees for bonsai

Beginner Sites
Bonsai Primer

Bonsai Experts and Individuals
Craig Coussins
Salvatore Liporace
Morten Albek
Bob Johnston
Michael Persiano
Rick Raygor
Keith Sedgewick
David Terry
Fred Wells

Botanical Guides
Bonsai Clubs International Botanical Guide
Maple Trees

Trees in Nature
The Ancient Bristlecone Pines
Maple Trees

Suiseki
Dave Sampson Suiseki
Suiseki
Felix Rivera Suiseki
Suiseki
Suiseki
Nature Stones
Michael Hach Suiseki
Fresno Bonsai Suiseki

Shohin
Shohin Europe

Penjing
Penjing by Qingquan Zhao
Penjing Wiki
Penjing

Vietnamese Landscapes/Hon Non Bo
Vietnamese Miniature Landscapes
Hon Non Bo

Bonsai in General
All Bonsai Trees