Meyer Lemon
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Citrus variety catalog
Find fruit measurements, growing observations, parentage and historical sources for citrus varieties.
Oranges & mandarinsLemons & limesPummelos & grapefruitKumquats & hybrids
Variety records
Published references and member observations, with source citations and growing conditions where available.
The sections here link to Meyer Lemon as an example.
View Meyer LemonFruitTaste · Measurements · Seeds · Ripening
Fruit weight, Brix, pH and taste ratings, with individual readings and source descriptions.
PlantGrowth habit · Leaves · Thorns · Flowers
Descriptions of growth habit, foliage, thorns and flowering, with the source and specimen context.
HardinessCold exposure · Damage · Recovery
Cold-event temperatures, exposure duration, observed damage and subsequent recovery.
Health & graftingRootstocks · Graft combinations · Health reports
Reported rootstock and scion combinations, graft outcomes, pests and disease symptoms.
Breeding & lineagePloidy · Zygotic rate · Parent roles · Pedigree
Recorded ploidy, seed and pollen parent use, zygotic rates and parentage. Unknown findings remain explicit.
History & sourcesDates · People · Original publications
Origins, breeders, introductions and name changes, linked to their supporting publications.
Cold-hardy breeding & historic varieties
The catalog covers many kinds of citrus, with particular interest in breeding for cold hardiness and documenting old varieties, including early USDA rootstocks.
Cold exposure & recovery
Compare reported cold events by temperature, duration, growing conditions and plant response.
- Exposure
- Minimum temperatureDuration below freezing
- Conditions
- Location & growing setupShelter and protection
- Response
- Observed damageDated recovery checks
A recorded temperature describes an exposure, not a guaranteed survival limit.
View Swingle hardiness recordsRootstock history: Swingle Citrumelo
Parentage and dated records connect a rootstock to the breeding work behind it.
- 1907
- Cross made by Walter T. Swingle
- 1974
- Released by the USDA as a rootstock
Documented by UCR and the Citrus Rootstocks cultivar index.
View Swingle’s historyCommunity observations
We maintain the catalog. Members can report growing results, upload photos they own and discuss varieties. Submitted observations and photos are public.