Plant care
Pinguicula cyclosecta (Cyclosecta Butterwort) care
Pinguicula cyclosecta
Also called Cyclosecta Butterwort, Purple-leaf Butterwort.
Watering rhythm
Bright indirect light (just back from a sunny window)
Keep the medium damp via tray-watering in growth; nearly dry in winter dormancy
Light
Bright indirect light (just back from a sunny window)
Soil
Gritty mineral carnivorous mix
Humidity
50-70%
Temp
13-27°C
Pet safety
Mildly toxic to pets
Mature size
Rosette 5-10 cm across
Care at a glance
Light
In the wild pinguicula cyclosecta 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 to a few hours of direct sun deepens the purple leaf blush and keeps the rosette symmetrical. Under a grow light, position 15-20 cm from the foliage. Weak light fades the colour and reduces stickiness. 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 keep the medium damp via tray-watering in growth; nearly dry in winter dormancy for pinguicula cyclosecta, 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. Stand the pot in a shallow tray of 1-2 cm water during the summer carnivorous phase, keeping the mix consistently moist. Use only rain, distilled or reverse-osmosis water. When the plant forms its small silvery winter rosette, withhold most water and let the surface go almost dry.
Soil and pot
Pinguicula cyclosecta grows best in gritty mineral carnivorous mix. An airy blend such as 1:1:1 sand, perlite or pumice and peat or coir, or a more mineral pumice-and-grit mix with a little peat. This montane Mexican species favours well-drained, near-neutral media rather than wet acidic bog peat. 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
Pinguicula cyclosecta sits happiest at around 50-70% humidity and 13-27°C (55-81°F). Tolerates average room humidity but looks best with moderate to high moisture in the air during summer growth. A terrarium boosts it, though airflow must remain good to stop rot on the fleshy leaves. If you keep the room above 13 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 pinguicula cyclosecta sparingly. Never use root fertiliser. It nourishes itself by trapping gnats and small flies on its leaves; indoors with no insects, offer tiny rehydrated bloodworm on the leaf surface or a very dilute (around 1/8 strength) foliar orchid feed misted lightly during active growth. 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 pinguicula cyclosecta in the Growli community. Each is annotated with the most common cause so you know where to start.
- Faded purple colour — The leaf blush depends on strong light. Increase brightness or move under a grow light to restore the distinctive purple tones.
- Winter rosette rot — The small silvery winter leaves rot in wet medium. Reduce watering drastically once the plant enters dormancy and improve air circulation.
- Hard-water decline — Tap-water minerals accumulate and weaken the plant. Water only with rain, distilled or reverse-osmosis water.
- Fungus gnats and rich soil — While the plant eats gnats, an infested rich potting mix harms its roots. Keep to a lean mineral medium and avoid fertilised compost.
Propagation
Propagate by leaf pullings: detach a whole healthy leaf with its white base and lay it on moist mineral mix in bright light; plantlets sprout from the base in a few weeks. The species also offsets readily and can be raised from seed. 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
Pinguicula cyclosecta is mildly toxic to pets. Pinguicula (butterwort) is not individually listed by the ASPCA in its toxic or non-toxic plant database, and the genus is not ASPCA-grounded as safe; treat with caution and verify with a vet before assuming it is pet-safe. As with most ornamental plants, nibbling the foliage may cause mild gastrointestinal upset in cats and dogs. 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.
Pinguicula cyclosecta care — frequently asked questions
What is the common name for Pinguicula cyclosecta?
Pinguicula cyclosecta is most commonly called Pinguicula cyclosecta, but it is also known as Cyclosecta Butterwort, Purple-leaf Butterwort. The names refer to the same species, so care instructions for Pinguicula cyclosecta apply identically to anything sold as Cyclosecta Butterwort.
How much light does pinguicula cyclosecta need?
Pinguicula cyclosecta grows best in bright indirect light (just back from a sunny window). Bright indirect light to a few hours of direct sun deepens the purple leaf blush and keeps the rosette symmetrical. Under a grow light, position 15-20 cm from the foliage. Weak light fades the colour and reduces stickiness.
How often should I water pinguicula cyclosecta?
Water pinguicula cyclosecta keep the medium damp via tray-watering in growth; nearly dry in winter dormancy. Stand the pot in a shallow tray of 1-2 cm water during the summer carnivorous phase, keeping the mix consistently moist. Use only rain, distilled or reverse-osmosis water. When the plant forms its small silvery winter rosette, withhold most water and let the surface go almost 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 pinguicula cyclosecta toxic to cats and dogs?
Pinguicula cyclosecta is mildly toxic to pets. Pinguicula (butterwort) is not individually listed by the ASPCA in its toxic or non-toxic plant database, and the genus is not ASPCA-grounded as safe; treat with caution and verify with a vet before assuming it is pet-safe. As with most ornamental plants, nibbling the foliage may cause mild gastrointestinal upset in cats and dogs.
What USDA hardiness zone does pinguicula cyclosecta grow in?
Pinguicula cyclosecta is rated for USDA zone 9-11 (indoor/greenhouse in most regions) and RHS hardiness H2. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.
Pinguicula cyclosecta deep-dive guides
Every aspect of pinguicula cyclosecta care, each with its own calibrated guide:
- Pinguicula cyclosecta watering schedule
- Pinguicula cyclosecta light requirements
- Best soil mix for pinguicula cyclosecta
- Pinguicula cyclosecta fertilizing guide
- When to repot pinguicula cyclosecta
- How to propagate pinguicula cyclosecta
- Pinguicula cyclosecta growth rate & size
- Pinguicula cyclosecta cold hardiness
- Pinguicula cyclosecta temperature & humidity
- Is pinguicula cyclosecta toxic to cats & dogs?
- Is pinguicula cyclosecta toxic to cats?
- Is pinguicula cyclosecta toxic to dogs?
Featured in these plant shortlists
Pinguicula cyclosecta qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:
- Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
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- Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more
Related guides
Pinguicula cyclosecta is also commonly called Cyclosecta Butterwort or Purple-leaf Butterwort.