House Plants  
   Offers information on air-cleaning and poisonous plants. Includes details toxicity and risks.
   http://www.blankees.com/house/plants/

House Plants - AllExperts  
   Offers answers to reader-submitted questions. Includes reader's ratings and comments.
   http://www.allexperts.com/getExpert.asp?Category=721

House Plants - Plant Ideas.com  
   Offers information by common name for the novice grower. Includes a discussion forum and a plant finder.
   http://www.plantideas.com/in/

Green and Ever Growing  
   Offers an alphabetical reference guide. Includes water and light requirements, common pests, characteristics, pruning hints and photographs.
   http://www.evergrowing.com/tips/

Caring for Flowering and Foliage House Plants - The Garden Helper  
   Offers information on topics including dish gardens, terrariums, indoor topiaries, repotting, pests and toxic plants. Includes a glossary, botanical names and guides to individual species.
   http://www.thegardenhelper.com/houseplants.html

World of Ficus, The  
   Offers information on care and growing habits. Topics include seasonal care, varieties, pruning, irrigation and transplanting. [Multi-lingual]
   http://www.tarjeplanta.com/

Houseplants - University of Illinois Extension  
   Offers information on topics including needs, selection, care, health and propagation. Includes types by botanical and common name and by light requirements.
   http://www.urbanext.uiuc.edu/houseplants/

PlantCare.com  
   Offers a database of over 2,000 species and genera of indoor plants. Includes common pests, photographs and a bulletin board. Paid subscription required for some information.
   http://www.plantcare.com

All About Houseplants - The Gardener's Network  
   Offers a guide to selection and care. Topics include forcing bulbs and blooms, pots and containers, propagation and terrariums.
   http://www.gardenersnet.com/hplants/

Extreme Indoor Gardening  
   Provides information on indoor gardening. Topics include the basics, troubleshooting and children's projects.
   http://members.tripod.com/~maxsmom/mywebsite

Houseplants - I Can Garden  
   Offers feature articles. Topics include repotting, seasonal tips, checking seeds and non-toxic pesticides.
   http://www.icangarden.com/document.cfm?task=viewcategory&categoryid=37

Insiders' Plant Information  
   Offers information used by horticultural professionals. Includes weekly tips, an IQ test, myths, bulletins, and help in diagnosing problems.
   http://www.horticulturalhelp.com/

Spaths.com  
   Offers information about growing the Peace Lilly indoors. Includes care, varieties and FAQ.
   http://www.spaths.com/

Indoor Jungle  
   Offers techniques and feature articles on topics such as moss poles, winter problems and life spans. Includes FAQ, a photo gallery and a discussion forum.
   http://www.indoorjungle.net

Green Patio  
   Offers a searchable database with care and maintenance information. Includes information on topics including terrace gardening and FAQ.
   http://www.greenpatio.com

Indoor Gardening - Better Homes and Gardens  
   Offers a discussion group. Includes a plant finder.
   http://www.bhg.com/bhg/dgroups/viewForum.jhtml?forum=29

Guide to Selecting Houseplants - NebGuide  
   Provides information for selecting plants based on environmental conditions. Includes a list of plants and their general requirements.
   http://ianrpubs.unl.edu/horticulture/g837.htm

House Plants - Gardenline  
   Offers growing and care advice from the University of Saskatchewan. Includes growing from seeds, humidity, using pure water as well as detailed information for several specific plants.
   http://gardenline.usask.ca/plants/index.html

Peperomia House Plant Cuttings  
   Offers a step-by-step guide to propagating variegated varieties of peperomia using stem cuttings. Includes photographs.
   http://www.gardenhive.com/houseplants/peperomias/propagate/stem-cuttings/

Misc-Houseplant-Exchange  
   Offers a discussion board for trading house plants. Includes some issue discussions.
   http://groups.yahoo.com/group/misc-houseplant-exchange/

House Plants: Proper Care and Problem Solving  
   Offers information about cultural considerations. Includes trouble signs and common infectious diseases.
   http://www.ext.nodak.edu/extpubs/plantsci/landscap/pp744w.htm

The Poinsettia  
   Provides basic horticultural and pest management procedures. Includes reflowering and propagation information.
   http://ianrpubs.unl.edu/horticulture/g1069.htm

Guide to Growing Houseplants - NebGuide  
   Offers tips for caring for plants in artificial environments. Includes information about pests and diseases.
   http://ianrpubs.unl.edu/horticulture/g1022.htm

Plantcare  
   Offers weekly articles about caring for indoor foilage. Includes a newsletter.
   http://plant-care.com/PlantTips/

Propagating House Plants - NebGuide  
   Offers instructions for making cuttings, divisions and runners, germinating seed and air layering. Includes a list of common plants and propagation methods.
   http://ianrpubs.unl.edu/horticulture/g337.htm

House Plants Forum - Garden Web  
   Offers a discussion forum. Topics include care, selection and sources.
   http://forums2.gardenweb.com/forums/houseplt/

Indoor Gardening - Insects/Diseases  
   Offers articles, news and briefs from the University of Minnesota Extension Service. Topics include bacterial leaf diseases, powdery mildew and root rot.
   http://www3.extension.umn.edu/topics.html?topic=5&subtopic=163

Interior Plantscaping with Large Houseplants  
   Offers instructions for massing green foliage indoors. Includes selections by lighting and problem diagnostics.
   http://www.ext.nodak.edu/extpubs/plantsci/landscap/h1123w.htm

Indoor Plants - Terrariums  
   Offers tips on growing in transparent glass or plastic. Topics include containers, soil, placement and care.
   http://hgic.clemson.edu/factsheets/HGIC1457.htm

Potted Plants  
   Offers information on identification and care. Includes articles on indoor bulb gardens, bonsai and safety. From Virginia Cooperative Extension.
   http://www.ext.vt.edu/cgi-bin/WebObjects/Docs.woa/wa/getcat?cat=ir-ln-ig-pp

Poinsettia Care in the Home - Ohio State University Extension  
   Offers information on watering, light, temperature and reflowering.
   http://ohioline.osu.edu/hyg-fact/1000/1248.html

My Hoyas  
   Includes photographs and descriptions of the author's hoya collection.
   http://www.myhoyas.com

University of Illinois Extension: Poinsettia Pages  
   Poinsettia history, facts, and care, including instructions for reflowering.
   http://www.urbanext.uiuc.edu/poinsettia/index.html

Houseplant Hydroculture  
   Guide to growing houseplants without the use of soil: materials, nutrients, plant care, and FAQs.
   http://members.lycos.co.uk/hydroculture/

Air Plants  
   Offers growing and care advice for tillandsias: watering, lighting, fertilizing, mounting, propagation and FAQ.
   http://plants.web-indexes.com/

PlantOasis.com  
   Guide to houseplants, featuring a directory of common species with basic information and a photo for each, articles about care and culture, and Q&A.
   http://plantoasis.com/

House Plant Care & Watering  
   This web site sells products designed for the proper care and watering of all house plants.The products are endorsed by leading pot manufactures, professional growers and gardening clubs.
   http://www.bestplantcare.com/