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Plant care

Begonia mazae (maze begonia) care

Begonia mazae

Also called maze begonia, miniature rhizomatous begonia.

RHS H1BUSDA 10-11Toxic to petsIndoor 15-25 cm tall with trailing stems reaching 25-40 cm.

Watering rhythm

5-8days

When the top 2-3 cm of mix is dry, about every 5-8 days

Light

Bright indirect light (just back from a sunny window)

Soil

Light, airy, free-draining mix

Humidity

50-70%

Temp

16-25°C

Pet safety

Toxic to pets

Mature size

15-25 cm tall with trailing stems reaching 25-40 cm.

Care at a glance

Light

Bright but filtered. Begonia mazae burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Bright, indirect light deepens the leaf colour and encourages flowering. Shield from direct sun, which scorches the small leaves; in too little light the colour fades and stems stretch. 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 mazae: when the top 2-3 cm of mix is dry, about every 5-8 days. 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 lightly moist in growth, allowing the surface to dry between waterings; the thin rhizome rots if kept wet. Water less in winter. Water at the base to keep foliage and rhizome dry.

Soil and pot

Begonia mazae grows best in light, airy, free-draining mix. Use an open, humus-rich blend with perlite and fine bark suited to a surface-creeping rhizome. A shallow pot or pan suits its spreading habit; avoid dense, water-holding media. 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 mazae sits happiest at around 50-70% humidity and 16-25°C (61-77°F). Likes moderate to high humidity and thrives in terrariums and grouped displays. Dry air browns leaf tips; use a pebble tray or humidifier with steady airflow. 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 mazae sparingly. Feed every 3-4 weeks in spring and summer with a balanced liquid fertiliser diluted to half strength. Reduce or stop in autumn and winter. 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 mazae in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Faded leaf colourInsufficient light dulls the bronze tones and dark markings. Move to brighter indirect light to restore colour.
  • Rhizome/stem rotOverwatering rots the slender rhizome and trailing stems. Let the surface dry between waterings and use a fast-draining mix.
  • Brown leaf tipsDry indoor air crisps the small leaves. Raise humidity and water consistently.
  • Powdery mildewWhitish film in crowded, humid, still conditions. Improve airflow and remove affected leaves promptly.

Propagation

Very easy from stem-tip or rhizome cuttings and by division in spring and summer; trailing stems root where they touch moist mix, making it simple to bulk up. 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 mazae 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, drooling, 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 mazae care — frequently asked questions

What is the common name for Begonia mazae?

Begonia mazae is most commonly called Begonia mazae, but it is also known as maze begonia, miniature rhizomatous begonia. The names refer to the same species, so care instructions for Begonia mazae apply identically to anything sold as maze begonia.

How much light does begonia mazae need?

Begonia mazae grows best in bright indirect light (just back from a sunny window). Bright, indirect light deepens the leaf colour and encourages flowering. Shield from direct sun, which scorches the small leaves; in too little light the colour fades and stems stretch.

How often should I water begonia mazae?

Water begonia mazae when the top 2-3 cm of mix is dry, about every 5-8 days. Keep lightly moist in growth, allowing the surface to dry between waterings; the thin rhizome rots if kept wet. Water less in winter. Water at the base to keep foliage and rhizome dry. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is begonia mazae toxic to cats and dogs?

Begonia mazae 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, drooling, and vomiting, with kidney failure possible in grazing animals.

What USDA hardiness zone does begonia mazae grow in?

Begonia mazae is rated for USDA zone 10-11 (indoors in most US and UK homes) and RHS hardiness H1B. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Begonia mazae deep-dive guides

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

Featured in these plant shortlists

Begonia mazae qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Begonia mazae is also commonly called maze begonia or miniature rhizomatous begonia.