Begonia Rex Care Guide
Begonia rex-cultorum
Begoniaceae / Begonia
Also known as: Rex Begonia, Painted-Leaf Begonia, King Begonia
Light
Medium Light
Humidity
High (60%+)
Temperature
16C - 27C
Pet Safety
Toxic to Pets
Begonia Rex is grown for its spectacularly patterned foliage in swirls of silver, purple, pink, and green. While not as easy as some houseplants, its dazzling leaf patterns make it a favorite among collectors.
Begonia Rex care at a glance
Give Begonia Rex medium light and water when the top inch of soil is dry. Avoid getting water on the leaves. Use light, well-draining mix with peat, perlite, and vermiculite. Keep temperatures between 16C and 27C.
Light Requirements
Medium Light. Place near a window that provides appropriate light levels for best growth.
Watering
Water when the top inch of soil is dry. Avoid getting water on the leaves.
Humidity
Prefers high humidity (High (60%+)). Adjust based on your room conditions and season.
Temperature
Optimal range: 16C to 27C. Avoid cold drafts and sudden temperature changes.
Soil
Light, well-draining mix with peat, perlite, and vermiculite.
Fertilizer
Every 2 weeks during spring and summer with diluted liquid fertilizer.
Common Problems
Frequently asked questions
How often should I water Begonia Rex?
Water when the top inch of soil is dry. Avoid getting water on the leaves.
What light does Begonia Rex need?
Begonia Rex prefers medium light.
Is Begonia Rex safe for pets?
Begonia Rex is considered toxic to pets. Keep away from cats and dogs.
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Sources and review
Content last reviewed: September 4, 2026
Content compiled from publicly available horticultural references for educational purposes. Source organizations are listed for transparency only and do not imply endorsement.