Port (adulte) - Wikimedia Commons - CC BY 2.0
Couverture limitée
Kumquat rond
Fortunella japonica
Un petit arbre ou arbuste d'agrume persistant, dense et arrondi (8-15 feet), cultivé pour ses minuscules fruits orange de forme ovale à ronde qui se mangent entiers, avec la peau — l'écorce sucrée et parfumée contraste avec la chair intérieure acidulée, et c'est tout l'intérêt du fruit. Parmi les plus résistants au froid des parents des agrumes, il supporte un froid bref mieux que la plupart des agrumes (environ jusqu'à la zone USDA 8b), mais il reste sensible au gel et est largement cultivé en bacs et en serre partout où les hivers sont froids. Originaire du sud de la Chine, et non d'Amérique du Nord. Notez que le nom botanique accepté est désormais Citrus japonica ; Fortunella japonica en est le synonyme largement utilisé.
Climate fit: narrow (34/100)
Edible
Container
Light
Full sun
Water
Moderate water
Mature size
96-180" tall · 96" apart
Hardy in zones
8b-11b
frosty to nearly frost-free winters
Native in Illinois
No
Les petits fruits de forme ovale à ronde se mangent entiers, avec la peau — l'écorce sucrée et parfumée contraste avec la chair intérieure acidulée, et ce jeu est tout l'intérêt.
Cold hardiness
Future
These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
USDA
Published baseline for this location from 1991-2020.
Source: USDA Plant Hardiness Zone Map 2023 (1991-2020 climatology) via ArcGIS FeatureServer
Won't grow here
2050
Zone 7a
Plotwright
Projected zone for this same location in 2050 (2041-2070) using SSP3-7.0 (regional rivalry).
Won't grow here
In plain terms: This location is in Zone 6b today. Its hardiness profile is cold winters, and coldest nights are typically around -3°F. By 2050, the projected hardiness zone is Zone 7a based on SSP3-7.0 (regional rivalry). That is a +0.5-zone shift from Zone 6b to Zone 7a by 2050.
✕
Out of range today and still out of range in 2050.
Heat tolerance
Future
Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...
Where this plant fits
Suitable across 36 ecoregions — 33 climate-resilient through 2070 · 3 newly possible by 2070. Best matches first.
Appalachian mixed mesophytic forests
›
Appalachian-Blue Ridge forests
›
Arizona Mountains forests
›
Atlantic coastal pine barrens
›
California coastal sage and chaparral
›
Canadian Aspen forests and parklands
›
Central Pacific Northwest coastal forests
›
Central-Southern Cascades Forests
›
Chihuahuan desert
›
Chilean Matorral
›
Sources & citations
Cite this page
For lesson plans, articles, or research that uses this page. To cite a single upstream fact instead, use its specific source listed below.
Plotwright. (2026, May 17). Kumquat rond (Fortunella japonica). Retrieved 2026, June 14, from https://plotwright.garden/plants/fortunella-japonica
Sources for every fact
Every fact on this page traces to a source. 18 fields cited - 18 source-backed.
GBIF
Botanical research database
Backs 17 fields
Identity
Summary
Plant type
Light
Moisture
Hardiness
Heat zone
Size
Spacing
Habit
Design roles
Seasonal interest
Growth stages
Lifecycle
Regional guidance
Success tips
Designer notes