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Plant care

Streptocarpus 'Chorus Line' (Cape primrose) care

Streptocarpus 'Chorus Line'

Also called Cape primrose, chorus line streptocarpus.

RHS H1bUSDA 10-11Pet-safeIndoor Around 20-25 cm tall and 25-30 cm wide when mature.

Watering rhythm

7-10days

When the top 2-3 cm of soil is dry, roughly every 7-10 days

Light

Bright indirect light (just back from a sunny window)

Soil

Free-draining African-violet or light peat-free houseplant mix

Humidity

40-60%

Temp

15-24°C

Pet safety

Pet-safe

Mature size

Around 20-25 cm tall and 25-30 cm wide when mature.

Care at a glance

Light

Bright but filtered. Streptocarpus 'Chorus Line' burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Bright, filtered light drives the heaviest bloom — an east or shaded window suits it. Avoid hot direct sun that scorches leaves and fades flowers; deep shade reduces flowering to little or none. 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 streptocarpus 'chorus line': when the top 2-3 cm of soil is dry, roughly every 7-10 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. Water at the soil surface, let it drain, and keep moisture off the crown and leaves. Allow the surface to dry between waterings and reduce watering in winter to prevent rot.

Soil and pot

Streptocarpus 'Chorus Line' grows best in free-draining african-violet or light peat-free houseplant mix. Add perlite for aeration around the fine roots. A shallow, snug pot is ideal, as the plant flowers best slightly pot-bound with sharp drainage. 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

Streptocarpus 'Chorus Line' sits happiest at around 40-60% humidity and 15-24°C (59-75°F). Happy in normal household humidity. Use a pebble tray in very dry rooms, but never mist — droplets mark and rot the hairy foliage. If you keep the room above 15 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 streptocarpus 'chorus line' sparingly. Apply a half-strength high-potash feed (tomato or African-violet) every 2-3 weeks from spring through early autumn for continuous flowering; withhold over 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 streptocarpus 'chorus line' in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Few flowersUsually too little light or missed feeding. Increase indirect light and feed with high-potash fertiliser through the growing season.
  • Crown or root rotFrom overwatering or water collecting in the crown. Water at the soil edge, let the surface dry, and ensure the pot drains freely.
  • Bleached or scorched leavesDirect sun through glass. Move to filtered light to protect the soft foliage and flower colour.
  • Wilting in the coldExposure below about 12°C or to draughts. Keep in a steady, warm position, especially over winter.

Propagation

Propagate by leaf cuttings — midrib cuts or leaf wedges in damp gritty compost yield plantlets along the veins. Mature clumps may also be divided in spring. 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

Streptocarpus 'Chorus Line' is pet-safe. ASPCA-listed as non-toxic to cats and dogs (Cape Primrose, Streptocarpus spp., Gesneriaceae), and non-toxic to horses. No toxic principle is reported. 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.

Streptocarpus 'Chorus Line' care — frequently asked questions

What is the common name for Streptocarpus 'Chorus Line'?

Streptocarpus 'Chorus Line' is most commonly called Streptocarpus 'Chorus Line', but it is also known as Cape primrose, chorus line streptocarpus. The names refer to the same species, so care instructions for Streptocarpus 'Chorus Line' apply identically to anything sold as Cape primrose.

How much light does streptocarpus 'chorus line' need?

Streptocarpus 'Chorus Line' grows best in bright indirect light (just back from a sunny window). Bright, filtered light drives the heaviest bloom — an east or shaded window suits it. Avoid hot direct sun that scorches leaves and fades flowers; deep shade reduces flowering to little or none.

How often should I water streptocarpus 'chorus line'?

Water streptocarpus 'chorus line' when the top 2-3 cm of soil is dry, roughly every 7-10 days. Water at the soil surface, let it drain, and keep moisture off the crown and leaves. Allow the surface to dry between waterings and reduce watering in winter to prevent rot. 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 streptocarpus 'chorus line' toxic to cats and dogs?

Streptocarpus 'Chorus Line' is pet-safe. ASPCA-listed as non-toxic to cats and dogs (Cape Primrose, Streptocarpus spp., Gesneriaceae), and non-toxic to horses. No toxic principle is reported.

What USDA hardiness zone does streptocarpus 'chorus line' grow in?

Streptocarpus 'Chorus Line' 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.

Streptocarpus 'Chorus Line' deep-dive guides

Every aspect of streptocarpus 'chorus line' care, each with its own calibrated guide:

Featured in these plant shortlists

Streptocarpus 'Chorus Line' qualifies for 9 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

  • Best pet-safe houseplantsHouseplants the ASPCA lists as non-toxic to cats and dogs — every one verified against the ASPCA toxic and non-toxic plant list.
  • Best plants for a north-facing windowHouseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
  • Best flowering houseplantsIndoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
  • Best pet-safe flowering plantsFlowering houseplants the ASPCA lists as non-toxic to cats and dogs — colour and blooms in a pet home, without the worry.
  • Best pet-safe plants for bright lightNon-toxic to cats and dogs and happy in a bright, sunny spot — safe plants for your best-lit windowsill.
  • Best small & tabletop houseplantsCompact houseplants that stay under about 40 cm — desk, shelf and windowsill plants that never outgrow a small space.
  • Best cat-safe plantsHouseplants the ASPCA lists as non-toxic to cats (and dogs) — safe greenery for a home with a curious cat.
  • Best dog-safe plantsHouseplants the ASPCA lists as non-toxic to dogs (and cats) — safe greenery for a home with a curious dog.
  • Best small pet-safe plantsCompact, tabletop houseplants that are also ASPCA non-toxic to cats and dogs — safe greenery for a desk or shelf.
  • Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Streptocarpus 'Chorus Line' is also commonly called Cape primrose or chorus line streptocarpus.