Begonia scharffii (elephant ear begonia) care

Light

Bright but filtered. Begonia scharffii burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Bright filtered light suits it best; an east or shaded south window is ideal. Direct midday sun scorches the hairy leaves, while deep shade thins the growth and dulls leaf color. If you only have a south window, set the plant back 1.5 m or hang a sheer curtain — both knock the intensity down into the right range.

Watering

Watering begonia scharffii: when the top 2-3 cm of soil is dry, roughly every 5-7 days in growth. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Keep the mix lightly and evenly moist but never waterlogged. Water at the soil line to keep the fuzzy foliage dry, and ease off in winter when growth slows. Soggy roots cause rapid stem and crown rot.

Soil and pot

Begonia scharffii grows best in light, free-draining peat- or coir-based mix. Use an airy potting mix amended with perlite and a little bark or leaf mold. Good drainage is essential; the thick soft stems rot quickly in dense, water-retentive compost. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Begonia scharffii sits happiest at around 50-70% humidity and 18-26°C (64-79°F). Loves high humidity; below about 40% leaf edges brown and growth stalls. Group with other plants or use a pebble tray or humidifier rather than misting the hairy leaves directly. If you keep the room above 18 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed begonia scharffii sparingly. Feed every 2-4 weeks during spring and summer with a balanced liquid fertilizer diluted to half strength. Stop feeding in late autumn and winter while growth is dormant. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on begonia scharffii in the Growli community. Each is annotated with the most common cause so you know where to start.

• Powdery mildew — White dusty patches on leaves in stagnant, humid air. Improve airflow, avoid wetting foliage, and remove affected leaves promptly.
• Stem and crown rot — Soft, blackened stem bases from overwatering or cold, wet soil. Let the surface dry between waterings and use a free-draining mix.
• Leggy, sparse growth — Long bare stems result from too little light. Move to brighter indirect light and pinch growing tips to encourage branching.
• Brown crispy leaf edges — A sign of low humidity or dry air near heaters. Raise ambient humidity with a pebble tray or humidifier.

Propagation

Easily propagated from stem-tip or cane cuttings rooted in water or a moist airy mix, and from leaf cuttings. Take cuttings in spring or summer and keep warm and humid until rooted. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Begonia scharffii is toxic to pets. The ASPCA lists Begonia as toxic to cats and dogs. The toxic principle is soluble calcium oxalates, concentrated in the underground tubers/rhizomes; ingestion causes vomiting and salivation, and kidney failure in grazing animals. Keep away from pets. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Begonia scharffii deep-dive guides

Every aspect of begonia scharffii care, each with its own calibrated guide:

• Begonia scharffii watering schedule
• Begonia scharffii light requirements
• Best soil mix for begonia scharffii
• Begonia scharffii fertilizing guide
• When to repot begonia scharffii
• How to propagate begonia scharffii
• Begonia scharffii growth rate & size
• Begonia scharffii cold hardiness
• Begonia scharffii temperature & humidity
• Is begonia scharffii toxic to cats & dogs?
• Is begonia scharffii toxic to cats?
• Is begonia scharffii toxic to dogs?

Featured in these plant shortlists

Begonia scharffii qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
• Best humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Begonia scharffii is also known as elephant ear begonia, hairy begonia, and scharff's begonia.

• Types of begonia — varieties identified, with care and pet-safety
• Snake plant care — light, water and common problems
• Dracaena care — light, water and common problems
• Peperomia care — light, water and common problems
• All 2464 plant care guides in the Growli library