Begonia 'Maori Haze' (Maori Haze Begonia) care

Light

In the wild begonia 'maori haze' grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Bright, indirect light keeps the silver-purple variegation vivid. It tolerates a little gentle morning sun, but direct midday sun scorches the delicate leaves and bleaches their colour. An east-, north- or west-facing position (RHS) works well; rotate the pot for even, bushy growth. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Aim for when the top 2-3cm of soil is dry (roughly weekly in summer, less in winter) for begonia 'maori haze', but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Water when the top 2-3cm of compost feels dry, watering from below or at the soil line so foliage stays dry. Keep evenly moist but never waterlogged in spring and summer, then ease off in winter as growth slows. Soggy soil and wet leaves invite root rot and powdery mildew.

Soil and pot

Begonia 'Maori Haze' grows best in free-draining, humus-rich houseplant mix (slightly acidic to neutral). Use a light, airy, well-drained mix high in organic matter, such as peat-free compost or coco coir blended with perlite or vermiculite. RHS lists loam-based, acid-to-neutral, moist but well-drained soil. Shallow, rhizomatous roots prefer a wide, shallow pot over a deep one. 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 'Maori Haze' sits happiest at around 50-70% humidity and 18-24°C (minimum 10°C) (65-75°F (minimum 50°F)). A humidity-loving Rex begonia; aim for above 50%, ideally 60% or more, during the growing season. Boost humidity with a pebble tray or by grouping plants, and ensure good airflow. Do not mist directly onto the leaves, as standing water on the foliage encourages powdery mildew and fungal spotting. 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 'maori haze' sparingly. Feed every 2-4 weeks during spring and summer with a balanced liquid houseplant fertiliser diluted to roughly half strength. Stop or sharply reduce feeding in autumn and winter when growth slows. Avoid over-feeding, which can scorch the sensitive foliage and cause salt build-up. 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 'maori haze' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Crispy brown leaf edges — Almost always a sign of air that is too dry. Raise humidity above 50% with a pebble tray or by grouping plants; keep away from radiators and cold draughts.
• Powdery mildew — White powdery patches on leaves, common in high humidity with poor airflow and wet foliage. Improve air circulation, avoid wetting the leaves, and remove affected foliage promptly.
• Leaf drop — Sudden loss of leaves usually stems from low humidity, cold stress, or root rot from overwatering. Stabilise warmth and humidity, and let the topsoil dry before watering again.
• Faded or scorched variegation — Too much direct sun bleaches the silver-purple colour and burns the leaf surface. Move to bright, indirect light.
• Root rot / yellowing wilt — Caused by soggy, poorly drained soil. Use a free-draining mix, never let the pot stand in water, and reduce watering frequency in winter.
• Botrytis / fungal leaf spot — Grey mould or dark spots from cool, damp, stagnant conditions. Remove affected leaves, improve airflow, and keep water off the foliage.

Propagation

Propagate from leaf or stem cuttings in spring or summer. For leaf cuttings, lay a healthy leaf on moist, well-draining mix and either nick the main veins on the underside or cut the leaf into wedge sections, each containing a vein; pin them flat in contact with the medium. Keep warm, humid (a covered tray or propagator helps), and brightly but indirectly lit until plantlets form. Division of the rhizome is also reliable. 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 'Maori Haze' is toxic to pets. Toxic to cats and dogs. The ASPCA individually lists Rex Begonia (Begonia rex) as toxic to both, with soluble calcium oxalates as the toxic principle, causing vomiting and salivation; the most toxic part is underground (the rhizomes/roots). Keep the plant out of pets' reach. 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 'Maori Haze' deep-dive guides

Every aspect of begonia 'maori haze' care, each with its own calibrated guide:

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

Related guides

Begonia 'Maori Haze' is also known as Maori Haze Begonia, Rex Begonia 'Maori Haze', and Painted-Leaf Begonia 'Maori Haze'.

• 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 569 plant care guides in the Growli library