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World of CitrusWorld of CitrusHarvey Lemon
Jonathan H. Crane · UF/IFAS Extension · 2010-12
https://ask.ifas.ufl.edu/publication/HS402 (opens in a new tab)
UF/IFAS EDIS publication HS402/HS1153. Original publication December 2010; revised November 2016; reviewed July 2023. Its Harvey-specific note says unknown origin, selected in 1940, and fruit similar to Eureka. General lemon descriptions and freeze-injury values are not Harvey-specific.
Accessed
USDA APHIS Identification Technology Program · 2011-10
https://idtools.org/citrus_id/index.cfm?packageID=1179&entityID=8581 (opens in a new tab)
Citrus ID, Edition 2, October 2011. The page distinguishes the general Harvey description from Chiefland Budwood Facility notes for clone F-41-39: seed source and entry into the program in 1964, discovery on the George James property, and original SPB-268 assignment. Facility traits and metrics are attributed to that source; qualitative hardiness is not a temperature trial.
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lavender87 · Tropical Fruit Forum · 2019-06-02
https://www.tropicalfruitforum.com/index.php?topic=32273.0 (opens in a new tab)
Forum thread begun by lavender87. The opening post asks whether a 16°F claim is true; it is not confirmed. Two separate replies report Harvey cold experiences: an unprotected rooted cutting in a pot with near-root dieback and regrowth after two nights at 22–23°F, and a trifoliate-rootstock orchard tree reported undamaged at 27–28°F with prior frost blankets below five feet. Conditions differ and do not establish a cultivar threshold.
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u/geforce321 · Reddit, r/FruitTree
https://www.reddit.com/r/FruitTree/comments/1l3nyru/harvey_lemon_tree_advice/ (opens in a new tab)
Original post reports a Harvey Lemon planted in April 2024 in Zone 7 North Carolina, with apparent top dieback after an unspecified cold winter despite intermittent covers and new shoots at the base/root area. The temperature, exposure duration, rootstock, and shoot identity are unknown; commenters question whether shoots are Harvey or rootstock. This is not proof of Harvey survival or recovery.
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Laaz · Citrus Growers Forum · 2009-06-14
http://citrusgrowersstatic.chez.com/web/viewtopice644.php (opens in a new tab)
One-page forum thread. Laaz gives an unqualified subjective ranking placing Harvey below Meyer and Ichang lemon for cold hardiness, without specimens, conditions, method, or temperatures. The other post asks about planting Harvey but reports no performance. The page supports only the attributed comparison, not a numerical threshold.
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