Skip to Main Content

Plant information directory

Hardiness Zone & Heat Zone Maps

Plant Information and Sources

Plant Information Online Database (University of Minnesota)
Note: Acceptance of "cookies" may be needed for proper operation.

Plant Sources

Drought Resistant Plants

Drought-tolerant Plants (Purdue publication HO-252)

Use the search tools at the following websites to find specific plants adapted to dry soil.

Plant Finder (Missouri Botanical Garden)
UConn Plant Database (University of Connecticut)
Landscape Plants of the Upper Midwest (University of Wisconsin)

Flowers (see also "ornamental plants" & "native plants" sections below)

Deadheading Do's and Don'ts (Purdue Extension-Marion County)
Perennial Plant of the Year (1990 to current) (Perennial Plant Association)
Kentucky Garden Flowers (University of Kentucky)
Flower Factsheets (Cornell University)
Designing and Preparing a Perennial Bed (University of Minnesota)
A Perennial Flower Bed Design (Kansas State University)
Fruitless Ornamental Plants
Sexes in Ornamental Plants (Ohio State University)
Preventing Unwanted Fruit on Trees and Shrubs (Purdue Extension-Marion County)
Fruits and Nuts
Fruit and Nut Publications (Purdue University)
Fruit and Nut Publications (Ohio State University)
Fruit and Nut Publications (University of Kentucky)
Midwest Home Fruit Production Guide (Ohio State University)

Information Links on Specific Plants

Raspberry and Blackberry Production Guide for the Northeast, Midwest, and Eastern Canada


Growing Herbs (HO-28) (Purdue University)
NewCROP Website (Purdue University)
Herb Gardening (University of Illinois)
Herb Directory (Penn State University)
Hort on the Internet: Herbs (North Carolina State University)
Invasive Species

Native Plants

Prairie Wildflowers (Purdue University)
Meadow-In-A-Can Wildflowers (Purdue Ext.-Allen County)
Michigan Wildflowers (Carson City-Crystal High School, Carson City, MI)
Prairie Primer (University of Wisconsin)
Silvics of North America (USDA Forest Service)

Ornamental Plants (trees, flowers and other plants)

Plant Finder (Missouri Botanical Garden) ++ (Plant Finder Search)
Jesse Saylor's Plant Encyclopedia (Michigan State University) ++ (Plant Search)
HortAnswers (University of Illinois) (Plant Search)
PlantFacts Plant List (Ohio State University) ++ (Quick Search)
Illinois Best Plants (Chicago Botanic Garden) ++ (Plant Search)
Plant Evaluation Notes (Chicago Botanic Garden)
Ornamental Plants Plus (Michigan State University) - no longer online (DVD)
++ = Website has audio pronunciation of scientific names.
+ = Website has written pronunciation of scientific names.
Note additional links in the above "Native Plants" and "Invasive Species" sections.

Trees, Shrubs and Ground Covers

Tree and Plant Finder (The Morton Arboretum)
SearchMOR (Quercus Plant Database) (The Morton Arboretum)
UConn Plant Database Plant Index (University of Connecticut) ++ (Search)
Woody Plants Database (Cornell University) +
Woody Ornamentals (University of Florida)
-Northern Trees (Zones 2-7) (UF, Rutgers, USDA) +
-Shrub Fact Sheets (University of Florida) +
UI Plants (University of Illinois) (Plant Search)
Deciduous Woody Groundcovers (2.7 MB file) (Cornell University)
Alternatives to Ash Trees (university-forest service, 25 pages)
Alternatives to Ash Trees (IDNR CUF, 1-page overview)

Woody Plant Identification

Many of the above websites will help you identify woody plants. Here are some additional sites on identification.
Woody Plant Identification (University of Tennessee) ++
Dendrology (Virginia Tech)
++ = Website has audio pronunciation of scientific names.
+ = Website has written pronunciation of scientific names.
Note additional links in the above "Native Plants" and "Invasive Species" sections.


Our Vegetable Travelers (non-native vegetables) (National Geographic)
Vegetable Publications (Purdue University)
Organic Vegetable Production (large 7.6MB file)
Watch Your Garden Grow (University of Illinois)
Vegetable Publications (Ohio State University)
Vegetable Varieties for Gardeners (Cornell University, NY)
Vegetable Cultivar Evaluations (Ohio State University, Franklin County)
Disease Resistant Vegetables
Seed catalogs also provide information on disease-resistant vegetable cultivars (cultivated varieties).

Vines (ornamental)

Annual and Perennial Vines (Purdue University)

Quick Guide to Ornamental Vines (Purdue University)

Wildflowers (see "native plants" section)

To Top