- Air Plants - Offers growing and care advice for tillandsias: watering, lighting, fertilizing, mounting, propagation and FAQ.
- All About Houseplants - Collection of articles, tips, and links on basic houseplant care.
- AllExperts House Plants - Offers answers to reader-submitted questions. Includes reader's ratings and comments.
- Avflower.com - Grower of gesneriads and succulents in Belarus offers personal articles and photo galleries of African violets, streptocarpus, and adeniums. Site in Russian/English/French.
- 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.
- Extreme Indoor Gardening - Provides information on indoor gardening. Topics include the basics, troubleshooting and children's projects.
- Fia's Pelargoniums - Offers information on raising pelargoniums in an apartment. Includes photographs.
- Garden Web House Plants Forum - Offers a discussion forum. Topics include care, selection and sources.
- Gardenline House Plants - 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.
- Guide to Selecting Houseplants - NebGuide - Provides information for selecting plants based on environmental conditions. Includes a list of plants and their general requirements.
- House Plants - Offers information on air-cleaning and poisonous plants. Includes details toxicity and risks.
- House Plants: Proper Care and Problem Solving - Offers information about cultural considerations. Includes trouble signs and common infectious diseases.
- Houseplant Care Tips - Blog whose posts present care tips and guidelines for a variety of houseplants, with discussion in the comments sections.
- Houseplant Hydroculture - Guide to growing houseplants without the use of soil: materials, nutrients, plant care, and FAQs.
- Houseplants - Blogger in the UK presents lots of links to houseplant and other gardening news and topics, interspersed with occasional personal comments and experiences.
- 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.
- HPlants.com - Personal website offers care information and photos on a handful of commonly grown houseplants.
- I Can Garden Houseplants - Offers feature articles. Topics include repotting, seasonal tips, checking seeds and non-toxic pesticides.
- 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.
- 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.
- Indoor Plants - Terrariums - Offers tips on growing in transparent glass or plastic. Topics include containers, soil, placement and care.
- Interior Plantscaping with Large Houseplants - Offers instructions for massing green foliage indoors. Includes selections by lighting and problem diagnostics.
- Misc-Houseplant-Exchange - Offers a discussion board for trading house plants. Includes some issue discussions.
- My Hoyas - Includes photographs and descriptions of the author's hoya collection. [English, Swedish]
- 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.
- PlantOasis.com - Guide to house plants, featuring a directory of common species with basic information and a photo for each, articles about care and culture, and questions and answers.
- PlantSpecs - Offers planting, light, temperature and propagation information. Includes search by photo, scientific or common name.
- Poinsettia Care in the Home - Ohio State University Extension - Offers information on watering, light, temperature and reflowering.
- Potted Plants - Offers information on identification and care. Includes articles on indoor bulb gardens, bonsai and safety. From Virginia Cooperative Extension.
- Spaths.com - Offers information about growing the Peace Lilly indoors. Includes care, varieties and FAQ.
- University of Illinois Extension: Poinsettia Pages - Poinsettia history, facts, and care, including instructions for reflowering.
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