Rex Begonia Plant Care

Rex Begonia (Begonia rex) belongs to the Begoniaceae family within the Begonia genus. Rex Begonia is native to India. Rex Begonia is also known as King Begonia, Painted-leaf Begonia, Beefsteak geranium.

Rex Begonia displays a bushy growth habit, reaching up to 1.5 inches tall with a spread of approximately 0.5 inches. Rex Begonia produces small unimpressive flowers in all colors but blue.

Leaf size: approximately 9 inches.

Begonia rex requires watering every 5–7 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Rex Begonia thrives in bright indirect light conditions. The optimal light range is 150–500 lux. Avoid placing Rex Begonia in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Begonia rex grows best at temperatures between 65°F and 75°F. Rex Begonia prefers humidity levels of 50–46%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Potting soil, peat moss, perlite, vermiculite. Good drainage is essential for Rex Begonia to prevent waterlogging, which leads to root rot and fungal issues.

Repot annually in spring to refresh soil and provide space for growth. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

Rex Begonia can be propagated through leaf cuttings, root division. Similar propagation techniques also apply to angel wing begonia plant care, which shares the same genus.

Rex Begonia is susceptible to spider mites, mealybugs, aphids. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Rex Begonia grows outdoors in USDA Zone 10b – 11b. Native to India, Rex Begonia is adapted to warm climates. In cooler regions, grow Rex Begonia as a houseplant or bring it indoors before the first frost.