Don's Citrus Blog
- Research and breeding of cold hardy (Citrus x Poncirus) hybrids for USDA climate zone 7.
- http://citrus.name

Crop Profile for Citrus in California
- A summary of the integrated pest management tools that are available to control economically important pests in the citrus industry in this state.
- http://www.ipmcenters.org/CropProfiles/docs/CAcitrus2.pdf

Calamansi Production
- Information on all aspects of growing this fruit in the Philippines, and some ideas for products that can be made from it.
- http://www.da.gov.ph/tips/calamansi.html

Growing Citrus Fruits
- Information on all aspects of cultivating these fruits in the Philippines including varieties specially adapted to the country.
- http://www.da.gov.ph/tips/citrus.html

Vines in Florida Citrus
- Article with photographs on the vine weeds that can be found in Florida citrus groves and how to control them.
- http://edis.ifas.ufl.edu/HS318

NSW Department of Primary Industries: Citrus
- Collection of articles by Australian governmental agency on cultivating citrus, pests and diseases, soil management, and managing fruit quality.
- http://www.agric.nsw.gov.au/reader/citrus

Citrus Research & Education Center
- University of Florida research, teaching and extension center devoted to citrus, addressing issues in horticulture, pests and diseases, and processing technology. Information about departments and facilities, list of publications.
- http://www.lal.ufl.edu/

Citrus Research International
- Description of the research projects, the facilities and services offered and contact details.
- http://www.citrusres.com

Citrus Varieties and Rootstocks
- Species descriptions and cultivation practices.
- http://edis.ifas.ufl.edu/TOPIC_Citrus

Citrus fruit - The different varieties.
- Fruit, citrus fruit. Information about the citrus fruits. Nutritional values, use, storage, history, and particular characteristics.
- http://www.thefruitpages.com/citrus.shtml

NSW Agriculture Citrus Info
- latest citrus research news, citrus contacts. As well as detailed information on growing citrus.
- http://www.agric.nsw.gov.au/citrus

Citrus Horticulture Program at SWFREC
- We serve the extension and applied research needs for 179,093 acres of commercial plantings in the Southwest Florida Gulf Coast region.
- http://www.imok.ufl.edu/citrus/

Florida Citrus
- Geared toward the consumer, this site provides nutrition, recipe, and purchasing information, along with links.
- http://www.floridajuice.com/floridacitrus/intro.html

Texas Citrus
- Information and resources for citrus growers.
- http://aggie-horticulture.tamu.edu/citrus/tamuhort.html

The Ultimate Citrus Page
- Information and links regarding anything citrus related, from agriculture to weather.
- http://www.ultimatecitrus.com