Southeast citrus growers hoping that the Feb. 1 freeze would wipe out the Asian citrus psyllid (ACP) population are going to be disappointed. “What we do know about freezes is a lot of time they will reduce or delay the buildup of many of the populations of pests that we worry about,” said Lauren Diepenbrock, University of Florida Institute of …
CRDF Board Funds Plant Transformation Projects
In January, the Citrus Research and Development Foundation (CRDF) board of directors took up several projects aimed at plant transformation to improve HLB disease resistance in plants. MANJUL DUTT The board voted to fund work by Manjul Dutt, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor of horticultural sciences, to graft the most promising non-genetically modified …
Study Highlights Soil pH Role in Citrus Tree Health
A new study examines the critical role soil pH plays in determining citrus root development, nutrient absorption and overall tree health. It offers insights for growers facing declining production challenges due to biotic restraints such as HLB disease and abiotic stresses such as low or high soil pH. The study looks at citrus root morphology across a range of soil …
See the Seminar Program for the Florida Citrus Show
The Florida Citrus Show is just a month away, scheduled for March 12. The event will be held at the University of Florida Institute of Food and Agricultural Sciences Indian River Research and Education Center and the U.S. Department of Agriculture-Agricultural Research Service U.S. Horticultural Research Laboratory in Fort Pierce. The seminar program offers a wealth of educational opportunities, and …
How to Factor the Freeze Into Spring Disease Management
By Megan Dewdney The recent freeze events of the last few weeks have scrambled the plans of citrus growers. It will take several weeks to months to understand the extent of the damage caused by the unusually cold weather. MELANOSE There is at least one disease that is highly likely to be worse than in other years. Melanose is likely …
Citrus & Specialty Crop Expo to Offer an Enhanced Experience
Mark your calendar for the 2026 Citrus & Specialty Crop Expo, set for Aug. 12–13. The event is returning with several upgrades designed to improve the experience for citrus and specialty crop growers, exhibitors and industry partners. EXCEPTIONAL LOCATION The 2026 Expo is relocating back to Fort Myers, Florida, but at a new location. The event will be held at …
Millennium Block HLB Findings Expected This Year
Fruit harvested at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Millennium Block from 2022 to 2026 will help determine the effectiveness of potential solutions to HLB. This season’s fruit will be harvested through early February, and research results are expected later this year. The Millennium Block was planted in 2019 at the UF/IFAS Indian River Research …
Florida’s Replanting Era: What it Means for OJ Demand
By Marisa Zansler Over the past year, there has been a discreet change occurring in the orange juice (OJ) aisle amid supply shortages. Some of the familiar OJ cartons have changed, not in name but in composition. With Florida’s smaller crop and limited global OJ supplies, Florida’s processors have stretched that limited supply by offering more products that blend OJ …
Tango Mandarin’s Plant Patent Expires
The University of California, Riverside (UCR), which developed the Tango mandarin in 2006, recently reflected on the variety’s success and noted that its patent has expired. Tango has generated more than $70 million in cumulative economic value for UCR. The virtually seedless, easy-peeling fruit has been marketed under brand names like Cuties and Halos. Now that Tango’s plant patent has …
Micronutrients Mandatory to HLB Recovery
Sponsored Content Question: Now that we have ReMedium TI® as a therapy to treat HLB, what else can a grower do to speed recovery? Answer: Feed the trees. I know that answer is an oversimplification, but it is the correct answer. Your groves have been struggling for years because of the root damage from HLB. While growers can’t make up …
Expected Freeze Effect on Flowering
Tripti Vashisth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) associate professor of horticultural sciences and citrus Extension specialist, was part of a question-and-answer session that the UF/IFAS Statewide Citrus Team held for growers last week prior to the weekend’s winter storm. She talked about how low temperatures and high winds could impact citrus flowering. She expressed hope …
Elevate Your Knowledge at the Florida Citrus Show
The Florida Citrus Show has an excellent day of education and networking planned for citrus and specialty crop growers. One of the most timely talks will cover post-freeze production considerations for citrus growers. Learn what Extension resources are available to growers to assist in their recovery efforts. Citrus Research and Field Trial (CRAFT) programs have been a lifeline to growers …
Draining Water From Groves Critical After Freeze
Cold-hardy citrus producers are now coping with the aftermath of last weekend’s winter storm. Water was a key tool that growers used in efforts to protect their crop from sub-freezing temperatures and blistering wind chills. Now, they need that water to drain as quickly as possible, says Lindy Savelle, executive director of the Georgia Citrus Association. “You don’t want to …
Impacts of Freeze on Fruit Quality
Florida citrus growers are in the middle of harvest season. That means plenty of fruit was still left on the trees prior to last weekend’s winter storm that brought freezing temperatures and dangerous wind chills to the state’s citrus-producing regions. Growers are assessing the negative impacts following the freeze, but they may not know the extent of damage for a …
When and How To Use Silicon for Freeze Protection and Recovery
By Muhammad A. Shahid and Davie Kadyampakeni Silicon (Si) is getting a lot of attention from citrus growers as a tool to help trees handle stress, especially during cold and freeze conditions. It toughens up plant tissues, strengthens cell walls and helps trees better handle stress when it is applied at the right time. BEFORE FREEZE The most important thing …
OLL Orange Varieties Revisited at Griffin’s Grove
Last September, Jason Griffin hosted a field day in his citrus grove near Lake Alfred in partnership with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). The event was well attended, and some growers requested a second field day when the crop was closer to harvest. Griffin and UF/IFAS hosted a second event in late January as …
Top Florida Varieties and Rootstocks
Valencia SPB 1-14-19 remained the most propagated Florida citrus variety for at least the fourth straight year in 2024–25, according to the Florida Department of Agriculture and Consumer Services (FDACS). The FDACS Division of Plant Industry’s Bureau of Citrus Budwood Registration recently released the Citrus Budwood Annual Report 2024–25. The report is a highly detailed 44-page document. US-942 returned as …
Sneak Peek: February 2026 Citrus Industry
The February issue of Specialty Crop Grower magazine features Part 2 of results from the Citrus State of the Industry Survey. Florida growers reveal details on their planting intentions. Find out what varieties and rootstocks they’re selecting, what percent are growing citrus under protective screen, and other insights. In the digital edition of the magazine, readers can find bonus coverage …
Join the Fun at the Florida Citrus Show
The 2026 Florida Citrus Show provides great educational opportunities for both citrus and small fruit and vegetable growers. The event is also an excellent opportunity to network with peers and learn about the latest goods and services available from the industry. The trade show portion of the event will be presented again this year in a tailgate format, which has …
Nutritional Needs of HLB-Affected Trees
By Davie Kadyampakeni, Alisheikh Atta and Edilaine Traspadini Citrus trees require optimal nutrition to be able to maintain high fruit yields, canopy size and good root health. Adequate nutrition supports not only yield and growth, but also tree resilience to disease and environmental stress, which is particularly important in HLB-affected groves. A balanced mix of macronutrients and micronutrients is needed …





























