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World of CitrusWorld of CitrusOLL-8 Orange
FFSP
FFSP fact sheet reports a four-year-old CRAFT OLL-8/Orange 14 tree with quick growth and medium eventual size under heavy Diaprepes/Phytophthora pressure. This is a source-specific observation and graft pairing; it does not establish immunity or universal resistance.
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FFSP
https://ffsp.net/varieties/citrus/oll-8/ (opens in a new tab)
FFSP variety profile reports medium round fruit, 13.7 Brix, high juice, and Valencia harvest possibly a few weeks earlier depending on weather. Fruit can hold into summer. An original eight-year-old tree produced more than five 90-pound boxes; this is a limited formal-yield observation. Greenhouse drought and field cold comparisons are qualitative.
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University of Florida, Institute of Food and Agricultural Sciences (UF/IFAS)
https://citrusresearch.ifas.ufl.edu/cultivars/oranges/oll8/ (opens in a new tab)
UF/IFAS profile for OLL-8 describes a sweet orange with a late March–April season, round fruit, orange-to-green external and deep-orange internal color, and sweet-to-tart flavor wording. It lists Brix as 8–10.5 in an HLB environment (13.7 pre-HLB) and acidity as 0.74–0.9%, without sample, method, rootstock, or date details. It also gives qualified comparative HLB-health claims and describes OLL-8 as a somaclone from an unstable sweet orange at the Orie Lee property in St. Cloud. The page's displayed alternate name is “Orie and Louise Lee Late 8.”
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Florida Foundation Seed Producers, Inc. (FFSP)
https://www.ffsp.net/wp-content/uploads/2021/09/OLL-8-Variety-Fact-Sheet.pdf (opens in a new tab)
FFSP's one-page fact sheet reports OLL-8 Brix at 11.5–14 and medium fruit, along with juice-color/soluble-solids values, tree and harvest descriptions, and rootstock- and age-context yield figures (including 1.0–2.6 boxes/tree on 6–7-year-old trees across listed UFR rootstocks). It repeats the limited original age-eight tree yield of more than five 90-lb boxes and reports a conditional, illustrative $/acre comparison. Trial methods and per-rootstock breakdowns are not supplied; preserve those limits and distinguish boxes/tree, pounds solids/box, and modeled economics.
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Jude W. Grosser · Google Patents · 2015-02-19
https://patents.google.com/patent/US20150052645P1/en (opens in a new tab)
U.S. plant patent application publication US20150052645P1 for OLL-8, inventor Jude W. Grosser; application filed 2013-08-13 and grant USPP26087P3 dated 2015-11-17. The patent describes OLL-8 as a somaclone of unstable OLL sweet orange and says OLL was believed to be an irradiation-induced mutant from a Pineapple orange trial. It reports source-specific plant/fruit descriptions and measurements, including April 2008 average Brix 13.7 and acidity 0.85. The reported OLL origin is uncertain; do not treat as verified genetic ancestry. Google Patents' displayed current legal status is not imported as an authoritative status.
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Jude Grosser; Fred Gmitter; Maria Brenelli · Citrus Industry Magazine · 2023-02-14
The article reports OLL-8 on rough lemon at Orie Lee Family Groves, St. Cloud, without psyllid control, produced 7 pounds solids per box for four seasons; adjacent Valencia on rough lemon in the same block averaged about 6. HLB tolerance is described as anecdotal. The article also reports values for a separate nine-year multi-clone OLL-derived seedling population, which are not OLL-8 and must not be transferred to it.
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Jude Grosser · Citrus Industry Magazine · 2021-07-06
The article identifies OLL-8 and OLL-4 as the first commercial OLL releases and reports several distinct contexts: pre-HLB St. Cloud trees on Swingle; four seasons of OLL-8 juice solids compared with Valencia on rough lemon; a pooled OLL-4/OLL-8 UFR trial planted in summer 2013 without psyllid control; and a single June harvest from OLL-8 on UFR-2 with 14+ Brix and no-to-minimal granulation. Trial years, replication, and some rootstock-specific values are unstated. The conditional boxes/acre and juice-price comparison is illustrative, not a measured result. The series naming passage is not an explicit individual OLL-8 alias.
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Peter Chaires · Growing Produce · 2014-08-25
The article calls OLL-8 the first experimental UF/IFAS processed-orange selection approved for release, describes FFSP's nursery licensing and budwood increase process, and says growers could test it in private Florida trials. It explicitly notes these experimental selections lacked traditional multi-site, multi-season evaluation and that production/quality data were limited. This is historical release/availability information, not current licensing status.
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Ernie Neff · Citrus Industry Magazine · 2021-11-12
Interview article attributes to UF/IFAS breeder Jude Grosser that OLL-8 and OLL-4 have fresh-market and strong processing potential; he describes OLLs as slightly more greening-tolerant than Valencias and says OLL trees are larger and can produce more fruit. These are attributed breeder remarks without specimen, site, date, or measurement context. OLL-20 comments in the article concern a different variety.
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Peter Chaires · Growing Produce · 2016-01-20
Trade article says OLL-4 and OLL-8 generally mature slightly earlier than standard Valencia but hold quality late; trees appear more robust. It specifically describes OLL-8 as generally high in juice content and pounds solids, holding fruit and quality into summer, appearing to yield better than Valencia, and having internal/external color like Rhode Red. No sample, site, measured season, or method is given in this passage.
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Citrus Genome Database
https://www.citrusgenomedb.org/trait_descriptor/78542?pane=stocks&page=6 (opens in a new tab)
The CLas_Ct descriptor defines a numeric amount of CLas determined by HLB PCR Ct value and links to HLB resistance. The visible St. Cloud 2018–2019 dataset table includes OLL8/rootstock sample rows with displayed values 24–40. The page gives no units, assay threshold, or sample protocol. These are sample-associated database values; do not interpret Ct values as an OLL-8 cultivar-wide tolerance result.
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Frank Giles · Citrus Industry Magazine · 2026-02-02
The article describes a January 2026 field day at Jason Griffin's Lake Alfred grove and quotes Griffin predicting that later-maturing OLL-8 fruit would improve in Brix and flavor as it ripened further. This is a prediction, not an OLL-8 measurement or tasting. The 7–8 and 10–nearly 12 refractometer readings reported elsewhere at the event are not assigned to OLL-8 and are not attributed here as OLL-8 values.
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Citrus Genome Database
https://www.citrusgenomedb.org/trait_descriptor/76350?pane=stocks&page=13 (opens in a new tab)
The JuiceColor descriptor identifies the associated trait as color of juice. The visible St. Cloud 2018–2019 dataset table includes OLL8/rootstock sample values from 37.5 to 39.1. Units, measurement scale, and protocol are not supplied. Preserve as specimen/rootstock-associated database values and do not convert to a flavor score or cultivar-wide quality grade.
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