Native Florida Wildflowers- http://hawthornhillwildflowers.blogspot.com
Native Plant Center Chesapeake Region- http://www.nativeplantcenter.net
New Jersey Agricultural Experiment Station, Rutgers Cooperative Exenion-
http://ocean.njaes.rutgers.edu/
New York Botanical Garden- http://www.nybg.org
New York Natural Heritage Program - http://www.acris.nynhp.org/
North Carolina State Extension Service- http://www.ncsu.edu
North Creek Nurseries- http://www.northcreeknurseries.com
Online Plant Guide- http://www.onlineplantguide.com/
Penn State Cooperative Extension- http://extension.psu.edu/
Plant Delights Nursery- http://www.plantdelights.com/
Plant Lust- http://plantlust.com/
Plants for a Future- http://www.pfaf.org
Practical Plants- http://practicalplants.org/wiki/Practical_Plants
Prairie Moon Nursery- http://www.prairiemoon.com
Project Noah- http://www.projectnoah.org
Rhode Island Coastal Plant Guide-
http://www.uri.edu/cels/ceoc/coastalPlants/CoastalPlantGuide.htm
River Bend Nursery- http://www.riverbendnursery.com
Royal Horticultural Society- http://www.rhs.org.uk/home_promo.aspx
Smithsonian Marine Station at Fort Pierce- http://www.sms.si.edu
Sunlight Gardens- http://www.sunlightgardens.com
The Growing Place- http://www.thegrowingplace.com
The Pennystone Project- http://www.pennystone.com/plants/forbs1.php
U.S. Forest Service- http://www.fs.fed.us
UConn Plant Database- http://www.hort.uconn.edu/plants/index.html
University of Georgia Center for Invasive Species and Ecosystem Health-
USDA Forest Service- http://www.nrs.fs.fed.us/fmg/nfmg/bl_hardwood/def.html
USDA Plants Database- http://plants.usda.gov
Virginia Cooperative Extension- http://pubs.ext.vt.edu/
Virginia Department of Conservation and Recreation- http://www.dcr.virginia.gov
Washington State University-
http://county.wsu.edu/mason/nrs/water/pages/PlantsForShorelineAreas.aspx
Wisconsin State Herbarium- http://www.botany.wisc.edu/herbarium