Cotyledon Orbiculata (pig's ear) care

Light

Most houseplants will scorch where cotyledon orbiculata thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Thrives in full sun to very bright light; give it the sunniest window indoors or full sun outdoors with some afternoon shade in extreme heat. The white farina coating and red leaf edges intensify in strong light. Inadequate light causes pale, floppy, stretched growth. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for when the soil is fully dry, roughly every 10-14 days in growth for cotyledon orbiculata, 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. Drought-tolerant; water deeply, then let the soil dry out completely before the next watering. Cut back markedly in winter. Avoid wetting the leaves, as this washes off the protective chalky farina and can cause spotting.

Soil and pot

Cotyledon Orbiculata grows best in gritty, fast-draining cactus and succulent mix. Use cactus or succulent soil with 30-50% added pumice, perlite or coarse grit. It needs excellent drainage and rots in heavy, damp soil. A deep terracotta pot suits its woody, shrubby root system. 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

Cotyledon Orbiculata sits happiest at around 30-50% humidity and 10-27°C (50-80°F). Prefers dry air and handles low household humidity easily. Do not mist; moisture on the leaves removes the white waxy bloom and encourages fungal problems. Good ventilation keeps it healthy. If you keep the room above 10 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 cotyledon orbiculata sparingly. Feed once a month in spring and summer with a half-strength low-nitrogen succulent fertiliser. Withhold feeding in autumn and winter. This vigorous shrub needs little supplemental feeding; excess nitrogen weakens the stems and dulls leaf colour. 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 cotyledon orbiculata in the Growli community. Each is annotated with the most common cause so you know where to start.

• Stretching and flopping — In low light the stems elongate and the heavy leaves cause the plant to flop. Move it into full sun and prune leggy stems; rooted cuttings rebuild a denser shrub.
• Loss of farina — Handling or overhead watering rubs off the chalky white bloom, leaving permanent fingerprints and marks. Water at soil level and avoid touching the leaves to keep the silvery coating intact.
• Root and stem rot — Overwatering or dense soil causes soft, blackened stems and collapse. Ensure sharp drainage, let the soil dry fully between waterings and remove any rotted tissue promptly.
• Mealybugs and scale — These pests settle in leaf axils and along woody stems. Treat with isopropyl alcohol or a suitable insecticide and inspect regularly, especially on older, woody growth.

Propagation

Propagate from stem cuttings or seed. Take a stem cutting, let it callus for several days, then plant in dry gritty mix and water sparingly once rooted. Leaf cuttings are far less reliable. Spring and summer are the best times to root it. 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

Cotyledon Orbiculata is toxic to pets. Toxic to cats, dogs and livestock. All parts of Cotyledon orbiculata contain cardiac glycosides (bufadienolides such as orbicusides and cotyledontoxin); documented canine poisoning includes severe bradycardia and cardiac arrhythmia, and the plant causes the fatal livestock syndrome 'krimpsiekte'. Though not individually itemised by the ASPCA, its toxicity is well established. Keep away from pets and seek veterinary care immediately if eaten. 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.

Cotyledon Orbiculata deep-dive guides

Every aspect of cotyledon orbiculata care, each with its own calibrated guide:

• Cotyledon Orbiculata watering schedule
• Cotyledon Orbiculata light requirements
• Best soil mix for cotyledon orbiculata
• Cotyledon Orbiculata fertilizing guide
• When to repot cotyledon orbiculata
• How to propagate cotyledon orbiculata
• Cotyledon Orbiculata growth rate & size
• Cotyledon Orbiculata cold hardiness
• Cotyledon Orbiculata temperature & humidity
• Is cotyledon orbiculata toxic to cats & dogs?
• Is cotyledon orbiculata toxic to cats?
• Is cotyledon orbiculata toxic to dogs?

Featured in these plant shortlists

Cotyledon Orbiculata qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• Best houseplants for a cool room — Houseplants that tolerate cool conditions down to about 10°C — for an unheated spare room, hallway, porch or a home kept cool.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Cotyledon Orbiculata is also known as pig's ear, round-leafed navel wort, and silver crown.

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