Nationwide

• Plant Native
• Lady Bird Johnson Wildflower Center
• USDA Plant Database
• Izel Native Plants for your Garden
• North American Native Plant Society
• Floridata—Plant Profile List
• Lowes Plant Search
• National Gardening Association—USDA Hardiness Zone and Plant Finder
• High County Gardens—Beautiful Plants for the WaterWise Garden
• HGTV Gardens—Plant Finder

Alabama

• Alabama Smart Yards—Alabama Cooperative Extension System (pg. 65) (100pg, 6,788K)
• Drought–Tolerant Landscapes for Alabama—Alabama Cooperative Extension System (18pg, 268.5K)

Alaska

• Alaska Department of Fish and Game—Native Alaskan and Exotic Plants used by wildlife

Arizona

• Arizona Municipal Water Users Association—Landscape Plants for the Arizona desert
• Arizona Department of Water Resources—Drought Tolerant/Low Water Use Plant Lists

Arkansas

• Plant Native List for Arkansas, Louisiana, Eastern Oklahoma, and Eastern Texas
• Plant Native—NATIVE PLANT LIST for Arkansas, Louisiana, Eastern Oklahoma, and Eastern Texas
• University of Arkansas—Drought Tolerant Plants Suitable for Arkansas Landscapes (2pg, 62.8K)

California

• Contra Costa Water Saving Plants
• The Metropolitan Water District of Southern California Plant List
• Theodore Payne Foundation for Wildflowers and Native Plants—California Native Plant Wiki
• The Water Conservation Garden at Cuyamaca College—Nifty 50 Plants for Water Smart Landscapes (PDF) (4 pp, 1.4MB)
• Water Wise Gardening in Santa Barbara County
• Water Wise Gardening in Fresno Region
• The San Francisco Low Water Use and Climate Appropriate Plant List (XLSX, 229K)

Colorado

• Colorado State University—Colorado Plant Database
• Harlequin's Gardens—List of Trees for Xeriscapes
• Plant Select—Plant Smarter

Connecticut

• Connecticut Botanical Society—Gardening with Native Plants
• "Uconn Plant Database of Trees, Shubs, and Vines"

Delaware

• Wildlife Habitat and USFWS—Native Plants for Conservation Landscaping Chesapeake Bay Watershed (PDF) (85 pp, 5.3MB)
• Native Plant Center for the Chesapeake Region

Florida

• Florida-friendly Plant Database
• Drought–Tolerant Plants for North and Central Florida—University of Florida (19pg, 315.4K)
• Native Florida Plants for Home Landscapes (15pg, 546.9K)
• Natives for Landscaping—Florida Native Plant Society
• The Florida-Friendly Landscaping Guide to Plant Selection & Landscape Design - Florida-Friendly Landscaping (114pg, 10.47MB)

Georgia

• Georgia Coastal Plain Native Plants for Conservation Landscaping and Wildlife Habitat - University of Georgia Marine Extension Service
• Landscaping with Native Plants in the Georgia Piedmont—Georgia Native Plant Society (4pg, 574.7KK)
• Part 1: Native Plants for Georgia - The University of Georgia College of Agricultural and Environmental Sciences
• Part 2: Native Plants for Georgia - The University of Georgia College of Agricultural and Environmental Sciences
• Part 3: Native Plants for Georgia - The University of Georgia College of Agricultural and Environmental Sciences

Hawaii

• Native and Introduced Plants of Hawaii
• Kaua'i Native Plant Society—Dryland native plants and trees recommended for xeriscape gardens (PDF) (1 pg, 20K)
• Native Nursery Plant Guide

Idaho

• Landscaping with Native Plants—University of Idaho Extension (24pg, 1.31MB)
• Landscaping with Native Plants of the Intermountain Region - Idaho Native Plant Society (13pg, 457.9K)

Illinois

• Illinois' Best Plants
• Bringing Nature to Your Yard—The Conservation Foundation (4pg, 1.87MB)

Indiana

• ViteGreenhouses—Indiana Native Plants
• Xeriscaping for Indiana (PDF) (2 pg, 124K)

Iowa

• Earl Mae Seed and Nursery—Drought Tolerant Plants (PDF) (2 pg, 44K)
• Introduction to Iowa Native Prairie Plants - Iowa State University (8 pp, 1.29MB)
• Short, Showy Native Plants - State Library of Iowa

Kansas

• Water-Wise Plants Trees and Ornamentals for South Central Kansas

Kentucky

• Native Plant List - Kentucky and Tennessee

Louisiana

• Plant Native List for Arkansas, Louisiana, Eastern Oklahoma, and Eastern Texas
• Louisiana Ecosystems and Plant Identification

Maine

• Maine Bureau of Land and Water Quality—The Buffer Handbook Plant List (PDF) (52 pg, 3.5MB)

Maryland

• Wildlife Habitat and USFWS—Native Plants for Conservation Landscaping Chesapeake Bay Watershed (PDF) (85 pg, 5.3MB)
• Native Plant Center for the Chesapeake Region

Massachusetts

• University of Massachussets—Drought Tolerant Plants for the Landscape (PDF) (3 pp, 32K)
• Native Plants Suitable for the Cultivated Cape Cod Landscape—Cape Cod Commission (2 pg, 65.31K)
• North American Plants for New England Gardens—UMass Extension Landscape, Nursery & Urban Forestry (5 pg, 31.4K)

Michigan

• Michigan Native Plants Database
• Native Perennials—City of Ann Arbor
• Northern Michigan's Native Plants—Tip of the Mitt Watershed Council
• Regional Plant Lists—Michigan State University

Minnesota

• Living Landscapes in Minnesota: A Guide to Native Plantscaping–USDA (40 pg, 11.22MB)
• Native Plant Encyclopedia—Minnesota Department of Natural Resources
• Blue Thumb—Planting for Clean Water

Mississippi

• Native Shrubs for Mississippi Landscapes—Mississippi State University Extension Service
• The Crosby Arboretum Plant List—The Crosby Arboretum (11 pg, 112.8K)

Missouri

• Plant Finder—Missouri Botanical Garden
• Grow Native!—Missouri Prairie Foundation
• Native Plants for Your Landscape—Missouri Department of Conservation (12 pg, 1.53MB)

Montana

• Landscaping with Native Plants of South Central Montana—Montana Native Plant Society (33 pg, 402.03K)
• Recommended Species for Native Plant Landscaping in the Helena Area—Montana Native Plant Society (19 pg, 229.96K)

Nebraska

• Perennials in Water Wise Landscapes—University of Nebraska–Lincoln Extension (4 pg, 754K)
• Wildflowers for the Home Landscape—University of Nebraska–Lincoln Extension (4 pg, 667.9K)
• Recommended Species for the Eastern Great Plains—Nebraska Statewide Arboretum
• Recommended Species for the Western Great Plains—Nebraska Statewide Arboretum

Nevada

• Southern Nevada Water Authority—Water Smart Plant List (PDF) (11 pp, 84K)
• Water-Efficient Landscape Guide—Truckee Meadows Water Authority

New Hampshire

• Drought Tolerant Plants for New Hampshire Landscapes - University of New Hampshire Cooperative Extension (4 pg, 21.9K)
• Landscaping with Native Plants—Nashua Regional Planning Commission (2 pg, 189.5K)

New Hampshire Homeowner’s Guide to Stormwater Management Do–It–Yourself Stormwater Solutions—New Hampshire Department of Environmental Services (1 pg, 905.55K)

New Jersey

• Incorporating Native Plants in Your Residential Landscape—Rutgers NJAES Cooperative Extension
• Landscaping for Water Conservation—Rutgers NJAES Cooperative Extension
• Native Plants for Wildlife Habitat Improvement in New Jersey’s Coastal Plain Region—Cape Atlantic Conservation District (16 pg, 856.48K)

New Mexico

• New Mexico Plant List
• Southwest Yard and Garden Plant Advisor—New Mexico State University
• Xeriscape Friendly Plants Online Database—KRQE News 13

New York

• Wildlife Habitat and USFWS—Native Plants for Conservation Landscaping Chesapeake Bay Watershed (PDF) (85 pp, 5.3MB)
• Native Plant Center for the Chesapeake Region

North Carolina

• North Carolina Cooperative Extension Service—Drought-Tolerant Plants for NC Landscapes
• Common native plant species—Mecklenburg County Government
  Tree List, Shrub List, Grass List, Flowers List
• Landscaping for Wildlife with Native Plants—North Carolina State University (12 pg, 465.26K)
• Native Plants—Asheville Botanical Gardens (3 pg, 48.39K)
• Native Wildflowers for Your Garden—North Carolina Botanical Garden (6 pg, 385.48K)
• Recommended Native Species—North Carolina Native Plant Society

North Dakota

• Living Landscapes in North Dakota: A Guide to Native Plantscaping— USDA (40 pg, 7.68MB)
• Xeriscape Plant Selections and Ideas—North Dakota State University Extension Service (4 pg, 61.32K)

Ohio

• Drought Resistance in the Home Landscape—Ohio State University
• Ohio Native Species for Landscape and Restoration Use—Ohio Department of Natural Resources

Oklahoma

• Plant Native List for Arkansas, Louisiana, Eastern Oklahoma, and Eastern Texas
• Plant Selections for Oklahoma—Oklahoma Proven (60 pg, 2.91MB)
• Under–Utilized Native Plants of Oklahoma—OKPLANTtrees (84 pg, 14.5MB)

Oregon

• Rod's Garden—Perennial Color
• Rod's Garden—Shrub Color
• Rod's Garden—Trees
• Rod's Garden—Vines
• City of Salem—WaterWise Plants (PDF) (4 pp, 103K, About PDF)
• Clean Water Services—Native Plant Finder
• City of Ashland—Native Plant Guide
• Regional Water Providers Consortium—Water–Plant Guide
• Water–Efficient Plants for the Willamette Valley—Eugene Water & Electric Board

Pennsylvania

• Wildlife Habitat and USFWS—Native Plants for Conservation Landscaping Chesapeake Bay Watershed (PDF) (85 pp, 5.3MB, About PDF)
• Native Plant Center for the Chesapeake Region

Rhode Island

• Rhode Island Coastal Plant Guide—University of Rhode Island

South Carolina

• Native Plant List for Coastal South Carolina—South Carolina Native Plant Society (3 pg, 37.29K)
• Plants that Tolerate Drought—Clemson University Cooperative Extension Service (11 pg, 155.16K)

South Dakota

• Living Landscapes in South Dakota: A Guide to Native Plantscaping—USDA (45 pg, 13.3MB)

Tennessee

• Landscaping with Native Plants—Tennessee Exotic Pest Plant Council (7 pg, 297.43K)
• Native Plant Selector—Tennessee Valley Authority

Texas

• Smart Scape Plant Search
• Austin City Connection—Native and Adapted Landscape Plants
• Plant Native List for Arkansas, Louisiana, Eastern Oklahoma, and Eastern Texas
• Earth-Kind Plant Selector

Utah

• Utah Water Wise Plants
• Central Utah Gardens

Vermont

• Northern Drought-Resistant Plants

Virginia

• Wildlife Habitat and USFWS—Native Plants for Conservation Landscaping Chesapeake Bay Watershed (PDF) (85 pp, 5.3MB)
• Virginia Department of Conservation and Recreation—Native Plants
• Native Plant Center for the Chesapeake Region
• How to Landscape with Native Plants at Home—James River Association (23 pg, 2.12MB)

Washington

• Saving Water Partnership—The Plant List
• King County—Native Plant Guide
• Native Plants—Spokane Smartscape
• Washington Native Plant Society—Native Plant List

West Virginia

• Wildlife Habitat and USFWS—Native Plants for Conservation Landscaping Chesapeake Bay Watershed (PDF) (85 pg, 5.3MB, About PDF)
• Native Plant Center for the Chesapeake Region
• West Virginia Pollinator Handbook (138 pg, 2.4MB, About PDF)

Wisconsin

• A Guide to Selecting Landscape Plants for Wisconsin—University of Wisconsin-Extension (24 pg, 409.33
• Landscape Plants of the Upper Midwest—University of Wisconsin–Madison
• Landscaping for Water Quality—Center of Environmental Study (12 pg, 555.85K)
• Blue Thumb—Planting for Clean Water

Wyoming

• LaBonte Park’s Outdoor Learning Center Water–Wise and Native Plant Demonstration Garden—University of Wyoming Extension Service (49 pg, 4.5MB)
• The WyoScape Xeric Demonstration Garden—University of Wyoming Cooperative Extension Service (46 pg, 3.4MB)
• Water–wise Plants for Wyoming—University of Wyoming Extension Service
• Water–Wise Wyoming Gardens—University of Wyoming Cooperative Extension Service (9 pg, 1.40MB)