- Adam's Art and Bonsai Blog provides excellent information about bonsai trees and techniques with easy to understand, step-by-step instructions that include lots of pictures.
- Bonsai Mary is Mary C. Miller, and her site has over 100 pages of information that include tips for buying bonsai, bonsai supplies, proper care techniques and everything in between.
- Alliance For Community Trees (ACTrees) is a national movement to improve the environment and our communities one tree at a time. ACTrees supports the needs of communities, nonprofits, businesses, and others engaged in urban forestry.
- TREE AID helps villagers living in the drylands of Africa unlock the potential of trees to reduce poverty and protect the environment, building its richness and health not just for today, but for generations to come.
Conservation & Preservation
- American Forest Foundation works on-the-ground with families, teachers, and elected officials to promote stewardship, keep forests healthy, and protect forest heritage in the United States.
- Archangel Ancient Tree Archive is a non-profit organization that locates and propagates the world’s oldest and most iconic trees. They are creating living libraries of old-growth tree genetics.
- Conservation International works to ensure a healthy and productive planet for us all. They help communities, countries and societies protect tropical forests, lush grasslands, rivers, wetlands, abundant lakes and the sea.
- International Tree Foundation (ITF) supports projects that involve planting trees that provide food and income for local people. In many cases this simultaneously addresses environmental issues such as habitat restoration and fundamental rights issues.
- The American Chestnut Foundation is restoring the American chestnut tree to eastern woodlands in the US to benefit the environment, wildlife, and society. In the process, they are creating a template for restoration of other trees and plants.
- The Garden Conservancy has joined together with gardeners, local organizations, and other like-minded partners since 1989 to preserve exceptional American gardens for the education and enjoyment of the public.
- The Nature Conservancy is the leading conservation organization working around the world to protect ecologically important lands and waters for nature and people.
- Natural Resources Defense Council (NRDC) is one of the nation's most powerful environmental groups, combining the power of 1.3 million members and online activists with the expertise of more than 350 lawyers, scientists and other professionals.
Get Tree Service
- TreeEstimate.com is a free tree estimate/quote request site and educational resource guide for the services of the tree care industry. They work with reputable, local companies that offer very competitive rates.
- TreeJob.com helps customers quickly find the right contractor for their needs, request tree service estimates from local experts, and get answers to their tree care questions.
- TreeSurgery.com is a UK-based directory website which aims to connect tree surgeons, all manner of tree workers, and arboricultural businesses in the UK with customers who need their services.