Begonia rex
Begonia rex
Rex begonia
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Taxonomy
Family Begoniaceae · Genus Begonia
Common Names
Rex begoniaPainted-leaf begoniaKing begonia
Context
nativeRegion
Northeastern India and Southeast Asia
usdaZones
10–11 (grown indoors as houseplant in cooler zones)
companionPlants
Calathea, Peperomia, Fittonia, Ferns
culturalUses
Popular ornamental plant for its decorative foliage; often featured in shaded indoor and greenhouse collections.
Care
Care Requirements
LightBright, indirect light; avoid direct sunlight which can scorch the leaves.
WateringKeep soil consistently moist but not soggy; water when the top inch of soil feels dry.
SoilWell-draining, rich peat-based potting mix with added perlite or vermiculite.
FertilizerFeed monthly during the growing season with a balanced, diluted fertilizer.
HumidityPrefers high humidity (above 50%); mist leaves or use a humidity tray.
TemperatureIdeal range is 15–24°C (60–75°F); protect from cold drafts and sudden temperature drops.
Growth & Life Cycle
HabitRhizomatous perennial; notable for its ornamental foliage.
Mature SizeHeight and spread of 30–45 cm (12–18 in).
Growth RateModerately fast grower during active season.
BloomingSmall, inconspicuous pink or white flowers in spring or summer; grown primarily for foliage.
DormancySlowed growth in winter; reduce watering.
Propagation
MethodsLeaf cuttings, Rhizome division, Stem cuttings
DifficultyModerate
Best SeasonSpring or early summer
Maintenance & Notes
PruningRemove dead or damaged leaves regularly to encourage new growth and reduce disease.
RepottingRepot annually or when rootbound in spring.
Pests & DiseasesSusceptible to powdery mildew, botrytis, mealybugs, and spider mites; avoid water on foliage to reduce fungal risk.
ToxicityMildly toxic to pets and humans if ingested due to insoluble oxalates.
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