Alstroemeria: The Inca Collection
   Information about a commercial strain of Inca lilies, including photos, usage and care.
   http://www.dwarfalstroemeria.com/

Australian Acacias
   Information on growing acacias in south-east Queensland from seed.
   http://www.uq.net.au/~zzlstein/acacia/acindex.html

Backyardgardener: Perennial Gardening
   Information and resources for perennial gardening.
   http://backyardgardener.com/pren/

Botany.com Verbena
   Information on growing from seed, distribution, appearance, growing conditions, and photos.
   http://www.botany.com/verbena.html

Chrysanthemums in Aberdeen
   Addresses aspects of cultivation, exhibition, show results, and guest articles.
   http://www.chrysanthemums.info

Floridata: Verbena bonariensis
   Describes how to grow, description of habit and appearance, and natural history of plant.
   http://www.floridata.com/ref/v/verb_bon.cfm

Gardening with Perennials
   Provides photos and facts for common species and lists plants used for specific purposes. Includes instructions on cultivation and care. [English, Spanish]
   http://www.urbanext.uiuc.edu/perennials/

General Maintenance of Herbaceous Ornamentals
   Includes information and pictures.
   http://ohioline.osu.edu/hyg-fact/1000/1236.html

Gerbera jamesonii Adlam
   Gerbera or African daisy - ecological, botanical, and horticultural information, with photos.
   http://www.plantzafrica.com/plantefg/gerberajames.htm

Heleniums
   All about this genus of hardy perennials. Information about growth in the wild, history, care and propagation, and an extensive list with descriptions and photos of species and cultivars.
   http://www.samshrub.co.uk/helenium/

Heritage Perennials
   Questions and answers, locate a local dealer, and information on perennials.
   http://www.perennials.com/

Ian's Chrysanthemum Page
   Tips and advice for growing, along with photographs, society details, and shows to visit.
   http://web.ukonline.co.uk/i.payne/index.html

Osteospermum.com
   Information and photographs of this daisy plant that originates from South Africa.
   http://www.osteospermum.com/

Perennials
   Small collection of articles with tips on planting and care.
   http://www.helpfulgardener.com/perennials/

Perennials by Jojo
   Weekly articles and discussions about perennials. Author is a professional gardener and propagator.
   http://www.suite101.com/welcome.cfm/perennials/

Perry's Perennial Pages
   University of Vermont professor offers experience and research on the subject of perennials.
   http://www.uvm.edu/~pass/perry/

Quadriga: The PeonyPleasureDome
   All about herbaceous and tree peonies: extensive list of cultivars with photos, care information, links to peony societies.
   http://www.quadriga.net/

The Inca Collection
   Information about this commercial line of alstroemeria cultivars marketed as a garden and patio plant, with photos and characteristics, care tips, and listing of garden centers selling them.
   http://www.incalily.com/

WiseAcre Gardens
   North Country perennial and wildflower photographs with plant information, virtual postcards and wallpaper.
   http://www.wiseacre-gardens.com/plants/perennials.html