The Chicago Botanical Gardens

Horticultural research involves evaluating the performance and ornamental characteristics of plants, as well as developing and introducing superior selections for Midwest landscapes. Endangered plant research studies native plants and their habitats to support their preservation
http://www.chicago-botanic.org/

The University of Missouri – Columbia, Extension Publications Library On Request (XPLOR)

This is the collection of University of Missouri – Columbia Extension publications. The collection includes publications on:

1. Agricultural Chemistry, Economics, and Engineering.
2. Aquaculture
3. Crops
4. Forestry
5. General Agriculture
6. Horticulture
7. Insects and Disease
8. Pets and Companion Animals
9. Soil and Water
   
10. Water and Air Quality
11. Wildlife and Wildlife Pests

http://muextension.missouri.edu/xplor/agguides/

USDA National Plant Database

The United States Department of Agriculture Plant Database maintains and generates data reports in specialized areas, including: characteristics, classification, culturally significant, fact sheets, invasive and noxious, threatened and endangered, and wetland indicator status.
http://plants.usda.gov

Flora of North America

"In order to provide comprehensive information to Flora of North America contributors, reviewers, and editors, the project maintains files on plant systematists, floristic and taxonomic databases, relevant references, and unpublished studies. These resources, coupled with the ever-building database on North American plants, give the project the ability to act as a referral service providing information on North American floristic studies, references, and specialists." The scale is North America, not local or state. http://www.efloras.org/flora_page.aspx?flora_id=1

Missouri Botanical Gardens

Information about the Missouri Botanical Gardens, Shaw Nature Reserve, as well as sections of Horticultural information, Butterfly Gardens, and other season related topics.
http://www.mobot.org/

The Morton Arboretum

See also the Chicago Botanic Garden. They share the same website. http://www.chicago-botanic.org

Illinois Native Plant Society

For information on joining a local chapter, or nurseries selling native plant seeds, see
http://www.ill-inps.org/

American Horticultural Society

Want to know how to minimize deer damage, create a moss garden, find rare and old-fashioned roses? As an AHS member you have access to many informational bulletins that have been researched by the Gardeners Information Service. Browse through the bulletins below; chances are the answer to your gardening question is just moments away. A new window will appear displaying the bulletin. When finished just close the window to return to this page.

If you still can't find what you are looking for, email us at gis@ahs.org.
IMPORTANT!!! In the subject line of your email, please provide your AHS member number, which is found on your membership card or on the mailing label of your copy of The American Gardener.
Note: The files below with a (*) are in PDF format. If you do not have Adobe Acrobat Viewer installed, you will need to download it in order to view/print the resource bulletins.

Resource Bulletins Special

• AHS Plant Heat-Zone Map*

  Gardening Guides

• Black Walnut Toxicity*
• Butterfly Gardening*
• Compost–Black Gold*
• Extending the Vase Life of Fresh Cut Flowers*
• Forcing Cut Branches to Flower in Your Home*
• Gardening for Wildlife*
• House Plant Pests*
• It’s For the Birds…*
• Minimizing Deer Damage*
• Moss Gardening Fact Sheet*
• Poison Ivy: Prevention and Treatment*
• 75 Great Plants for American Gardens*
• Selecting, Planting, and Caring for Trees*
• Soil: The Foundation of Your Garden*
• Tips for Successful Seed Germination*

Master Gardener Hot Line

Indexes to diseases, problems, or pests -
http://www.extension.uiuc.edu/mg/hotlinks/hotline-helpers.html