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Plant care

Begonia 'Lana' (lana begonia) care

Begonia × 'Lana'

Also called lana begonia, cane lana.

RHS H1bUSDA 10-11Toxic to petsIndoor 45-90 cm tall and 30-45 cm wide indoors

Watering rhythm

5-7days

When the top 2-3 cm of soil is dry, about every 5-7 days

Light

Bright indirect light (just back from a sunny window)

Soil

Light, free-draining, peat-free houseplant mix

Humidity

40-60%

Temp

16-24°C

Pet safety

Toxic to pets

Mature size

45-90 cm tall and 30-45 cm wide indoors

Care at a glance

Light

Begonia 'Lana' 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, filtered light keeps it compact and flowering. An east or shaded west window is ideal. Strong direct midday sun scorches the wing-shaped leaves, while too little light causes lanky, sparse growth. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.

Watering

Water begonia 'lana' when the top 2-3 cm of soil is dry, about every 5-7 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 and let the surface dry slightly between waterings; cane begonias dislike permanently wet roots. Cut back in winter as growth slows. Keep water off the foliage to reduce leaf spot and mildew.

Soil and pot

Begonia 'Lana' grows best in light, free-draining, peat-free houseplant mix. Multipurpose compost amended with perlite and bark gives an airy, moisture-retentive root run. A pot with good drainage prevents the soggy conditions that cause stem rot. 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 'Lana' sits happiest at around 40-60% humidity and 16-24°C (60-75°F). Copes with average household humidity. Moderate humidity reduces leaf-edge browning; favour good airflow and grouping over misting, which can spread leaf-spot disease. 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 'lana' sparingly. Feed every 2-4 weeks in spring and summer with a balanced liquid feed, shifting to a high-potash feed to boost flowering. Reduce to monthly or stop in 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 'lana' in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Leggy growthInsufficient light or no pinching. Move to brighter indirect light and pinch tips to encourage lower branching.
  • Stem and root rotFrom overwatering or dense, wet soil. Use a free-draining mix and let the surface dry between waterings.
  • Powdery mildewWhite coating in still, humid air. Improve ventilation and keep foliage dry.
  • Bud dropOften from sudden temperature change or erratic watering. Keep conditions and moisture steady.

Propagation

Easy from stem-tip cuttings in spring or summer, rooted in water or moist gritty compost. Include at least one node per cutting and pinch the young plant to build a bushy framework. 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 'Lana' is toxic to pets. ASPCA lists Begonia as toxic to cats, dogs and horses. The toxic principle is soluble calcium oxalates, most concentrated underground but present throughout the plant. Chewing causes oral irritation, drooling and vomiting; grazing animals risk kidney failure. Site out of reach of 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 'Lana' care — frequently asked questions

What is the common name for Begonia × 'Lana'?

Begonia × 'Lana' is most commonly called Begonia 'Lana', but it is also known as lana begonia, cane lana. The names refer to the same species, so care instructions for Begonia 'Lana' apply identically to anything sold as lana begonia.

How much light does begonia 'lana' need?

Begonia 'Lana' grows best in bright indirect light (just back from a sunny window). Bright, filtered light keeps it compact and flowering. An east or shaded west window is ideal. Strong direct midday sun scorches the wing-shaped leaves, while too little light causes lanky, sparse growth.

How often should I water begonia 'lana'?

Water begonia 'lana' when the top 2-3 cm of soil is dry, about every 5-7 days. Water thoroughly and let the surface dry slightly between waterings; cane begonias dislike permanently wet roots. Cut back in winter as growth slows. Keep water off the foliage to reduce leaf spot and mildew. 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 'lana' toxic to cats and dogs?

Begonia 'Lana' is toxic to pets. ASPCA lists Begonia as toxic to cats, dogs and horses. The toxic principle is soluble calcium oxalates, most concentrated underground but present throughout the plant. Chewing causes oral irritation, drooling and vomiting; grazing animals risk kidney failure. Site out of reach of pets.

What USDA hardiness zone does begonia 'lana' grow in?

Begonia 'Lana' is rated for USDA zone 10-11 (indoor 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 'Lana' deep-dive guides

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

Featured in these plant shortlists

Begonia 'Lana' qualifies for 2 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Begonia 'Lana' is also commonly called lana begonia or cane lana.