Tesselaar Tulips Growing Guides and Planting Instructions
- Growing guide and planting instructions.
- http://www.tesselaar.net.au/growingguides/tulipbulb.asp

Elegant Tulip Bulbs
- Information on culture, groups and divisions, and photos.
- http://www.elegant-tulip-bulbs.com

Tulip Insect Problems
- Brief paragraph on tulip aphids and mites, from the Michigan State University Extension.
- http://web1.msue.msu.edu/msue/imp/modop/00001485.html

Tulip Disease Problems
- Brief article on blight, crown rot, stem rot, viruses and so forth; from Michigan State University Extension.
- http://web1.msue.msu.edu/msue/imp/modop/00001486.html

The Tulip Book of P. Cos
- Online reproduction of a 1637 book about tulips.
- http://library.wur.nl/tulips/

Tulipes Sauvages
- Dedicated to botanical tulips, this site provide cultural and botanical information and many photos that cover the range of species and varieties. English and French versions.
- http://www.tulipessauvages.org/

MSN Learning & Research: Tulip
- Encyclopedia article.
- http://encarta.msn.com/encnet/refpages/RefArticle.aspx?refid=761563910

Tulips and Daffodil Care After Bloom
- From the University of Minnesota Horticulture Science Dept.
- http://www.extension.umn.edu/info-u/plants/BG455.html

The Gardening Articles , the Noble Tulip
- Guidelines for designing tulip beds and some tips about specific tulips.
- http://wezel.com/garden/articles/tulips1.htm