 Perennials, Annuals and Bulbs - November Tips - http://www.ext.vt.edu/departments/envirohort/monthlytips/november/notenovh.html Instructions on planting in the fall, including some specific intstructions about tulips. From the Virginia Coooperative Extension. |
 About.com: Poisonous Plants for Cats, Dogs, Humans - http://landscaping.about.com/od/poisonouslandscapeplants/ Article listing a number of poisonous plants, with links to further information about those plants. |
 Shady Character - http://www.mailbag.com/users/mnofsing/shad.html Mark shares photos and descriptions with personal experiences growing a large number of shade plants, both perennials and woody specimens. |
 Gardenweb: Name That Plant - http://forums2.gardenweb.com/forums/namegal/ Forum that allows users to upload images of plants that they are trying to identify. |
 HortiPlex - http://hortiplex.gardenweb.com/ Horticultural database with over 100,000 species and cultivars. Comments, ratings, and photos for many varieties supplied by members of the Gardenweb community. |
 Plants National Database - http://www.plants.usda.gov/ Online USDA database of botanical information, images, and links on plants in the USA, including crops and invasives. Search by name, geographic distribution, or other characteristics. |
 Floridata - http://www.floridata.com/ Features hundreds of plant portraits, each illustrated with several photos, documenting the garden uses and cultural requirements of each species or cultivar. |
 PlantBuzz - http://www.plantbuzz.com/ Gardener Mark McDonough presents horticultural musings and illustrated plant studies, with particular emphasis on alliums and other bulbs for rock gardens. |
 BackyardGardener.com: Garden Guides on Plants - http://www.backyardgardener.com/plants/ Starting point for information on (types of) plants, with summary information for many species and varieties. |
 SunnyGardens.com - http://www.sunnygardens.com/ Plant encyclopedia featuring photos and short descriptions of annuals, perennials, shrubs, and trees. |
 Dave's Garden: PlantFiles - http://davesgarden.com/guides/pf/ Database with over 80,000 plants with cultivation information and pictures supplied by member gardeners. |
 WeedAlert.com - http://www.weedalert.com/ Offers a weed listing for the United States regions, primarily weeds occurring in lawns. |
 New Jersey Weed Gallery - http://njaes.rutgers.edu/weeds/ Database of weeds, accessible by common and botanical names and by a thumbnail gallery. Summary information and photos are provided for each weed. |
 DenverPlants.com - http://www.denverplants.com/ This resource for gardeners in the Denver metro area includes a sizeable database of plants with photos and cultural information. |
 PlantZAfrica - http://www.plantzafrica.com/ Includes information about plants native to southern Africa, including hundreds of alphabetically arranged plant portraits, by the National Botanical Institute of South Africa. |
 Virtual Plant Tags - http://www.virtualplanttags.com/ Database of detailed descriptions and growing tips for thousands of plants, including many not commonly grown. Profiles include cultural information, assessment of landscape value, and photos for most. |
 Gardenline - http://www.gardenline.usask.ca/ Guide to growing and caring for houseplants, vegetables, trees and shrubs. Also features common pests and a miscellaneous section. From the University of Saskatchewan Extension. |
 Echo: Fruiting Trees, Shrubs, and Herbaceous Plants - http://www.echotech.org/mambo/index.php?option=com_content&task=view&id=95 Features cultural information, uses, handling tips, and links for an extensive list of fruits and vegetables. |
 Translat - http://members.ozemail.com.au/~pbostock/ Translation program for botanical latin. |
 Horticopia On-line Plant Information - http://www.horticopia.com/hortpix/ Includes directory of plants, categorized by genus, includes summary cultural information and small photograph for each plant. |
 Fruits and Vegetables - http://edis.ifas.ufl.edu/TOPIC_Fruits_and_Vegetables Includes set of fact sheets and links from the University of Florida. |
 Desert-Tropicals.com - http://www.desert-tropicals.com/ Features searchable database of thousands of plants, with basic information and often photos. Includes many succulents, herbs, and tropical fruit trees. |
 Chicago Botanic Garden: Ornamental Plant Development - http://www.chicagobotanic.org/research/plant_evaluation/ Provides access to plant evaluation reports from the Botanic Garden's plant trials. Each report, in PDF format, provides several pages of description and photos. |
 Plants For A Future - http://www.pfaf.org/ Resource centre for rare and unusual plants, particularly those which have edible, medicinal or other uses. Offers a plant database, and various articles on gardening, perennials, and habitats. |
 Plants Toxic to Animals - http://www.library.uiuc.edu/vex/toxic.htm Resources about toxic plants from the Veterinary Medicine Library. |
 The Families of Flowering Plants - http://delta-intkey.com/angio/ Offers descriptions, illustrations, and identification retrieval. |
 The Garden of Paghat the Ratgirl - http://www.paghat.com/ Pacific Northwest gardener presents essays for hundreds of species growing in her garden, with personal notes, history, cultural information, and photos for each. |
 Cal's Plant of the Week - http://www.plantoftheweek.org/ Features a new plant every week, with photo, description, and cultural information. Previously featured plants can be selected by botanical or common name. Focus is on plants for greenhouse culture. |
 All America Selections Winners - http://www.all-americaselections.org/ Showcases new varieties of flowers, vegetables, and plants for garden performance. |
 Garten.cz - http://www.garten.cz/ Features a searchable, multilingual garden plant encyclopedia, with a summary of cultural and botanical information and in many cases photos. |
 Tiscali Gardening - http://new.mweb.co.za/gardening/ A South African flower, plant and gardening portal with searchable plant database, photographs and information. |
 Dinosaur Garden Plants - http://www.dinosaurgardenplants.com/ Describes plants that lived during the age of the dinosaurs, with brief information, lists, and links to other resources for plants of the mesozoic era. |
 Flowers of India - http://www.flowersofindia.net/ Collection of hundreds of plant photos with brief descriptions. Each of the plants grows in India, but both natives and non-natives are featured. |
 Foliage Plants Database - http://albinopri.cool.ne.jp/leaf/en/ Searchable database with basic information and some photographs of plants grown primarily for their foliage. Japanese and English. |
 Findmeplants.co.uk - http://www.findmeplants.co.uk/ Garden plant finder. Searchable by garden conditions and design requirements such as flower color, size and growth habit. Search results include plant photo and summary information. |
 Illinois' Best Plants - http://www.bestplants.org/ Chicago Botanic Garden provides a database of recommended plants for Illinois gardens, from perennials to trees, with photos and information on their culture and use. |