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Plant care

Begonia 'It' (It begonia) care

Begonia 'It'

Also called It begonia, miniature rhizomatous begonia.

RHS H1bUSDA 10-11Toxic to petsIndoor Around 10-20 cm tall and 15-25 cm wide indoors.

Watering rhythm

5-7days

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

Light

Bright indirect light (just back from a sunny window)

Soil

Airy, free-draining peat-free houseplant mix

Humidity

50-70%

Temp

18-24°C

Pet safety

Toxic to pets

Mature size

Around 10-20 cm tall and 15-25 cm wide indoors.

Care at a glance

Light

Bright but filtered. Begonia 'It' burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Give bright, filtered light to keep the rosette tight and the leaf colour rich. An east-facing sill or sheer-curtained south window works well. Direct sun bleaches and scorches; low light causes loose, stretched growth. 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 'it': when the top 2-3 cm of soil is dry, roughly every 5-7 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 the mix lightly moist, watering once the surface dries. Water at the soil line to avoid wetting the dense crown, which is prone to rot. Ease off noticeably through the cooler, darker months.

Soil and pot

Begonia 'It' grows best in airy, free-draining peat-free houseplant mix. Blend coir or peat-free compost with perlite and a little fine bark for sharp drainage. A shallow pot suits the surface rhizome and reduces the volume of damp soil around the crown. 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 'It' sits happiest at around 50-70% humidity and 18-24°C (64-75°F). Loves humidity and stays compact and crisp-leaved when air is moist; it performs beautifully in terrariums. Use a humidifier or pebble tray rather than misting, since standing moisture on the tightly packed leaves encourages mildew. 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 'it' sparingly. Apply a balanced liquid houseplant feed at half strength every 2-4 weeks in spring and summer. Stop feeding over autumn and winter while growth is minimal, then resume as light levels rise. 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 'it' in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Powdery mildewCommon on densely leaved miniatures in still, damp air. Increase ventilation, avoid wetting leaves, and remove infected foliage promptly.
  • Crown rotThe compact crown rots if water collects in it or soil stays soggy. Water from the side, use a gritty mix, and never let the rosette sit wet.
  • Browning leaf tipsDry air or under-watering crisps the small leaves. Raise humidity and keep soil evenly lightly moist away from heat sources.
  • Loss of compact formOpen, stretched rosette and pale leaves mean too little light. Shift to a brighter indirect spot to restore the tight, textured habit.

Propagation

Propagate in spring by dividing the rhizome or taking leaf or rhizome cuttings. Set sections on warm, moist mix under high humidity; plantlets emerge from the leaf veins or rhizome within weeks. 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 'It' is toxic to pets. The ASPCA classifies Begonia (Begonia spp.) as toxic to cats, dogs, and horses. The active toxic principle is soluble calcium oxalates, concentrated in the underground parts; signs of ingestion include oral irritation, drooling, vomiting, and trouble swallowing. 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 'It' care — frequently asked questions

What is the common name for Begonia 'It'?

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

How much light does begonia 'it' need?

Begonia 'It' grows best in bright indirect light (just back from a sunny window). Give bright, filtered light to keep the rosette tight and the leaf colour rich. An east-facing sill or sheer-curtained south window works well. Direct sun bleaches and scorches; low light causes loose, stretched growth.

How often should I water begonia 'it'?

Water begonia 'it' when the top 2-3 cm of soil is dry, roughly every 5-7 days. Keep the mix lightly moist, watering once the surface dries. Water at the soil line to avoid wetting the dense crown, which is prone to rot. Ease off noticeably through the cooler, darker months. 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 'it' toxic to cats and dogs?

Begonia 'It' is toxic to pets. The ASPCA classifies Begonia (Begonia spp.) as toxic to cats, dogs, and horses. The active toxic principle is soluble calcium oxalates, concentrated in the underground parts; signs of ingestion include oral irritation, drooling, vomiting, and trouble swallowing. Keep away from pets.

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

Begonia 'It' is rated for USDA zone 10-11 (indoor in most US homes) and RHS hardiness H1b. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Begonia 'It' deep-dive guides

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

Featured in these plant shortlists

Begonia 'It' 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 'It' is also commonly called It begonia or miniature rhizomatous begonia.