Magnolia Society International
magnoliasociety.org
A worldwide organization of gardeners, nurserymen and other people who are devoted to the appreciation and study of magnolias.
Collier Arbor Care
collierarbor.com
Tree, shrub and turf information, IPM practices, insect and disease articles, tree care information, annual garden calendar.
State and Provincial Trees
state-tree.com
A list of official state and provincial trees of all 50 U.S. states and 13 Canadian provinces and territories including both common and scientific names and images of official flags.
How to Plant Trees
backyardgardener.com
Gives information on where to use trees and how to plant them correctly.
American Association of Amateur Arborists
geocities.com
A loose association of individuals and groups interested in learning more about trees and other woody plants.
Palm and Cycad Societies of Australia
pacsoa.org.au
Features technical and non-technical articles of interest to palm and/or cycad enthusiasts.
TreeLink
treelink.org
Resource for urban and community forestry: planting and caring for trees in cities and towns. Includes links list, research, news, forums, and educational materials.
Arnold Arboretum
arboretum.harvard.edu
The Arnold Arboretum is a research and educational institution. It manages a collection of hardy trees, shrubs, and vines located in Boston, Massachusetts and associated herbarium and library collections.
American Conifer Society
conifersociety.org
Association for the development, conservation, and propagation of conifers, with an emphasis on those that are dwarf or unusual. Photo gallery, database, information about membership and journal.
British Conifer Society
britishconifersociety.org.uk
Organization for gardeners and collectors of ornamental, dwarf and rare conifers, owners and managers of arboreta and nurseries, and professional botanists. Photo gallery and database, excerpts from the journal.
Dictionary of Tree Terms
treedictionary.com
Keslick and Son Aboriculturist's alphabetical listing of tree terminology. An online dictionary of tree terms including summarized definitions, articles, and photographs.
Elm Research Institute
landscapeelms.com
Nonprofit organization dedicated to the restoration of the American elm tree, Ulmus americana. Includes information about Dutch elm disease and the American Liberty elm, a group of cultivars with resistance to this fungal disease.
California Macadamia Society
members.aol.com
Non-profit corporation dedicated to promoting the advancement and improving the culture and production of the Macadamia nut.
The Cycad Society of South Africa
cycadsociety.org
Provides information about mission and membership, the quarterly journal, pages with photos and information on individual species, and general articles.
TreeDazzled
treedazzled.com
Tree enthusiast presents how-to and academic articles on trees and their propagation, with blog and a photo gallery of California trees.
Acer palmatum - Japanese Maple
web1.msue.msu.edu
Provides a brief summary to the variety, growth, character of Acer palmatum for hardiness zones 5 through 8.
Central Florida Palm and Cycad Society
plantapalm.com
Features information about germinating palm tree seeds, message board, photographs and newsletter.
Cycad Society
cycad.org
US organization for education and conservation of cycads. Information about newsletter, member seed bank, photo gallery, and links to other resources.
The American Chestnut Foundation
acf.org
Dedicated to the restoration of the American Chestnut through scientific breeding and cooperative research.
Royal Botanic Gardens Sydney: The Cycad Pages
plantnet.rbgsyd.nsw.gov.au
Provides botanical and horticultural information on cycads. Topics include growing in pots and open ground, propagation, pests and diseases, listings of parks and gardens featuring cycads, and links to other resources.
West Coast Native Tree ID
signsofdissent.com
A dichotomous key to identify trees native to the West coast of the United States. Includes photos and information on these trees.
Trees & Shrubs
odla.nu
Provides links to other Web sites related to trees and shrubs.
The-Tree
the-tree.org.uk
Resource for a wide range of information about trees and forests: Trees and the environment, British trees, cultivation, tree medicine, news and other features.
HardyPalms.org
hardypalms.org
Forum for discussing hardy palms, subtropicals, and companion plants. Includes gallery for sharing photos,link repository, and hardy palm news from the web.
The Cycads
toyen.uio.no
Provides information on a primitive group of vascular plants. Includes an introduction, systematic position, distribution details and ethnobotany.
Keslick & Son: Modern Arboriculture
home.ccil.org
Tree care information includes tree biology, tree and soil chemistry help, and organic tips.
University of Alabama in Huntsville Grounds Management Page
uah.edu
A resource for Southern gardeners who need information on trees that grow well in their area.
Saskatchewan Dutch Elm Disease Association
sdeda.ca
The SDEDA is an association created to preserve the American Elm in Saskatchewan. Provides information on Dutch Elm Disease and ways to battle the disease.
Ice Damage On Trees
urbanext.uiuc.edu
Heavy accumulations of snow and ice can cause major structural damage to trees and shrubs. The damaged limbs should be properly removed. The following links will provide a guide for homeowners seeking to repair damaged plant material.U.of Illinois
Elmcare.com
elmcare.com
Devoted to elm trees and elm care with sections dealing with diseases (including Dutch elm disease), new research, tree physiology and other elm-related information.
The Treehouse
gypoclimber.com
Forum for arborists, with discussions on gear, techniques, training, tree health and care, and informal chat.
TreeHelp.com
treehelp.com
Source of information regarding tree and shrub care including how-to articles, species profiles, insect and disease information and other features.
Southern African Trees
africantrees.com
A listing of southern african trees with photos, providing general and cultivation information, concentrating on plants suitable as bonsai, potplants or with edible fruit.
Doug Eckel's Palms, Cycads, and Platyceriums
home.earthlink.net
Home grower of palms, cycads and platycerium ferns provides specialized information, techniques, and links to related resources, besides offering a selection of his plants for sale or trade.
The WVU Tree Bark Home Page
caf.wvu.edu
Designed to provide a place to learn about the anatomy and physiology of tree bark, fungal canker diseases that affect tree bark, the wound responses of injured tree bark, and the role of wound responses in the resistance of living tree bark to wound pathogens.
The Hardiest Palms
hardiestpalms.com
Dedicated to growing hardy palms.
How to Grow and Maintain Birch Trees
birch-tree.com
Learn how to care for a birch tree, including selecting the correct site and type of birch, watering, fertilizing, mulching, and monitoring for problems.
Oak Wilt Treatment and Prevention
stopoakwilt.com
Specializing in the analysis, prevention and treatment of oak wilt using Alamo fungicide and root trenching. Offers free consultation, cedar clearing, dead tree removal, and replanting services.
Palm Society of South Texas
raingardens.com
Promotes the use of palms in landscaping. Provides education on the cultivation and preservation of palms.
Sun Palm Trees
sunpalmtrees.com
Includes an extensive photo gallery of various palm species including cold-hardy varieties, as well as cultural information.
English Oak Trees
oldknobbley.com
Natural history of English Oaks (Quercus robur), their life, conservation and woodland restoration. How to obtain acorns from old oak trees by mail order.
Erik's Sago Page
erikssagos.g2gm.com
Basic information on sago palm (cycas revoluta), with photos of young and established plants and seeds.
The European Palm Society
palmsociety.org
An organization dedicated to the sharing of information about palms and other exotic plants across the continent of Europe. In English, German, French, Italian and Spanish.
Casey Trees Endowment Fund
caseytrees.org
A project to restore the tree canopy of Washington, DC. Includes a review of the street tree inventory carried out in 2002.
Trees of the Pacific Northwest
oregonstate.edu
An identification guide to conifers of the Pacific Northwest provided by Oregon State University.
Hardy Palm Trees and Ferns
wap.atfreeweb.com
Showcases palms that can survive the snowy winters of the Washington (DC) area. Photos and cultivation information for several hardy and semi-hardy species.
Better Homes and Gardens: Tree Pictures
bhg.com
A collection of American tree pictures.
Flowering Trees
landscaping.about.com
Articles on flowering trees used in landscaping, including weeping trees, saucer magnolias, dogwoods and crape myrtles. Each illustrated article spans several pages.
The Canadian Chestnut Council
uoguelph.ca
Charitable organization to promote the American chestnut: organization and biological news.
The Trees of Reed College
web.reed.edu
Offers photographs and descriptions for a variety of trees that can be found on the campus of Reed College in Portland, Oregon. Visitors can identify trees by location or find the location of examples of a certain kind of tree.
What Tree Is That?
arborday.org
Arbor Day Society's online tree identification site for Eastern/Central and Western USA trees.
Palm Tree Care
palm-tree.net
Information for homeowners about how to care for a palm tree including planting, fertilizing, and dealing with insects and diseases.
Betula lenta
hort.purdue.edu
Uses, cultivation and description for this tree, commonly known as cherry birch, sweet birch, or black birch.
Growing Palms Outside in a Cool Climate
members.chello.be
Detailed information on germinating palm seeds, and growing frost-hardy palms in temperate climates. Also offers seeds for sale.
Palm Tree Care and Names
junglemusic.net
San Diego nursery's informational section featuring portrait pages for dozens of commonly cultivated palm species.
The Cycad Jungle
cycadjungle.8m.com
Home growers of palms, cycads, Dyckia bromeliads, and tropical gingers, located in Florida. Includes articles and photos of cycad cultivation and propagation.
Staking and Guying Trees
ohioline.osu.edu
Contains information and diagrams.
Palm and Cycad Societies of Florida
plantapalm.com
Features a comprehensive online encyclopedia of palms and cycads.
International Palm Society
palms.org
Invites people worldwide to grow palm trees and learn about these important resources of food, fiber, oil, and beauty in the landscape.
Deciduous Trees and Shrubs With All-Season Interest
ohioline.osu.edu
Contains information and pictures.
Monthly Tree Tips
massarbor.org
Monthly guide to caring for trees from the Massachusetts Arborists Association, including a featured tree for each month.
Tree Trail
treetrail.net
Contains descriptions of rare trees native to the Eastern United States, and provides information about growing them on private property.