Fauna
Plant

King Begonia

Begonia rex

Also known as Fancy-Leaf Begonia, Painted-Leaf Begonia, Rex Begonia

King begonias are celebrated for their dramatic, asymmetrical leaves featuring vivid bands of silver, crimson, and deep green. Native to humid forest floors and shady rock crevices in Assam, these rhizomatous perennials thrive under dense canopies where moisture is constant. They serve as the foundational parent for hundreds of fancy-leaf indoor cultivars cultivated worldwide.

OrnamentalTropicalShade-Loving
King Begonia reference
Swallowtail Garden Seeds / Public domain · cc0
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyAutotrophic (Photosynthesis)
Predators
  • Slugs
  • Snails
  • Mealybugs
ThreatsHabitat destruction, over-collection from wild populations
HabitatsSubtropical rainforest floor, humid river valleys, rock crevices
Life span5–10+ years
Classification
  1. OrderCucurbitales
  2. FamilyBegoniaceae
  3. GenusBegonia
  4. SpeciesBegonia rex
Range & activity
Range data is not available yet.
Safe observation
Interaction riskHigh
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is high
Contains calcium oxalates toxic to pets if ingested; keep out of reach of dogs and cats.
Why it is dangerous
Contains soluble calcium oxalates that cause intense oral stinging, salivation, and gastrointestinal distress if chewed or swallowed.
How to recognize a risky encounter
Recognizable by large asymmetrical leaves painted with distinct bands of silver, dark green, and deep purple.
What to do
Keep potted plants elevated out of reach of domestic pets and wash hands after pruning stem cuttings.
Responsible observation
  • Light: Provide bright, indirect sunlight to maintain rich leaf coloration without scorching sensitive tissues.
  • Watering: Water at the soil surface when the top layer feels dry, keeping leaves free from damp standing water.
  • Humidity: Maintain ambient moisture through room humidifiers or tray grouping rather than direct misting.
Related species
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