Begonia 'Cowardly Lion' (cowardly lion begonia) care

Light

Begonia 'Cowardly Lion' is what florists mean by "bright spot, no direct sun" — close enough to a south or east window to feel the brightness, with a sheer curtain or a few feet of distance keeping the sun off the leaves. Bright, indirect light intensifies the gold-and-bronze colouring; it tolerates a touch more light than rex types. Avoid harsh direct sun, which scorches; too little light mutes the colour and stretches growth. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.

Watering

Water begonia 'cowardly lion' when the top 2-3 cm of mix is dry, about every 5-8 days. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Water thoroughly, then let the surface dry before watering again; the stout rhizome rots if kept soggy. Reduce in winter. Water at the base to keep the rhizome and textured leaves dry.

Soil and pot

Begonia 'Cowardly Lion' grows best in light, airy, humus-rich, free-draining mix. Use an open peat-free blend with perlite and bark so the surface rhizome stays aerated. A wide, shallow pot suits the spreading rhizome and reduces the risk of waterlogging. 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 'Cowardly Lion' sits happiest at around 50-70% humidity and 16-25°C (61-77°F). Prefers moderate to high humidity but is more tolerant of average room air than rex begonias. Raise humidity if leaf edges brown, and keep airflow good to deter mildew. If you keep the room above 16 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 'cowardly lion' sparingly. Feed every 3-4 weeks in spring and summer with a balanced liquid fertiliser at half strength. Reduce or stop in autumn and winter as growth slows. 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 'cowardly lion' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Faded colour — Too little light dulls the chartreuse and bronze tones. Move to brighter indirect light to restore the warm colouring.
• Rhizome rot — Overwatering or a buried rhizome causes soft, mushy rot. Keep the rhizome on the surface and let the mix dry between waterings.
• Brown, scorched leaf edges — Dry air, direct sun, or erratic watering crisps the ruffled margins. Raise humidity, filter strong light, and water evenly.
• Powdery mildew — Whitish film on the textured leaves in humid, still air. Improve airflow, avoid overhead watering, and remove affected foliage.

Propagation

Propagate by rhizome division or leaf/rhizome cuttings in spring and summer; sections of rhizome with a node and leaf wedges root readily in a warm, humid, lightly moist mix. 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 'Cowardly Lion' is toxic to pets. The ASPCA lists Begonia as toxic to cats, dogs, and horses. The toxic principle is soluble calcium oxalates, most concentrated in the rhizome; ingestion causes oral irritation, salivation, and vomiting, with kidney failure possible in grazing animals. 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 'Cowardly Lion' deep-dive guides

Every aspect of begonia 'cowardly lion' care, each with its own calibrated guide:

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

Featured in these plant shortlists

Begonia 'Cowardly Lion' qualifies for 4 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.
• Best fast-growing houseplants — Houseplants documented as fast or vigorous growers — quick to fill a pot, cover a pole or trail down a shelf.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Begonia 'Cowardly Lion' is also commonly called cowardly lion begonia or rhizomatous cowardly lion.

• 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