Here is a link to the USDA Plants Database.

Search the PLANTS database by Scientific Name,
Common Name, Symbol, Family, Genus, and/or State.

Here are some useful links to the web sites of companies
that supply plants and seeds suitable for butterfly gardens.

http://www.dkgarden.com http://www.bluebellnursery.com http://www.sharpbro.com/ http://www.butterflyseeds.com/ http://members.aol.com/_ht_a/caplants/passiflora.html http://www.mountainvalleygrowers.com/ http://www.elk-mountain.com/ http://www.afn.org/~afn10853/butterfly.htm http://www.forestfarm.com/ http://www.glasshouseworks.com/ http://www.garden-ville.com/ http://www.jacksonperkins.com/ http://www.michiganbulb.com/ http://www.nicholsgardennursery.com/ http://www.parkseed.com/ http://members.aol.com/pasiflora1/ http://www.reneesgarden.com/ http://www.sw-greenhouse.com/ http://www.seedman.com/vine.html http://www.springhillnursery.com/ http://www.gardenerschoice.net/ http://www.americanmeadows.com/ http://www.companionplants.com/ http://www.gardensalive.com/index.asp?bhcd2=989901767 http://www.gracefulgardens.com/ http://www.newearth.com/ http://www.homesteadgardens.com http://www.plantstop.com/ http://www.selectseeds.com/ http://www.senecahill.com/ http://www.swallowtailgardenseeds.com/ http://www.ricecreekgardens.com/vines/ http://www.avantgardensne.com/