Auricula (Bear's ear) care

Light

In the wild auricula 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. Thrives in full sun to partial shade; avoid intense afternoon sun in summer, and ensure maximum light in winter when grown under glass to maintain compact, floriferous growth. 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 moderately in spring and summer; reduce significantly in autumn and winter for auricula, 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. Water at the base to keep soil evenly moist but never wet; the fleshy roots rot quickly in waterlogged conditions, especially at low temperatures.

Soil and pot

Auricula grows best in moist but well-drained, moderately fertile, neutral to slightly alkaline. A mix of good loam, coarse grit, and leaf mould (roughly 2:1:1) suits most auriculas; show and border types tolerate a wider range of soils than alpine types. 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

Auricula sits happiest at around Moderate (40–60%) humidity and -15 to 22°C (5 to 72°F). The mealy (farinose) coating on some cultivars can be damaged by rain splash and overhead watering; grow show auriculas in a sheltered position or cool glasshouse to preserve the farina. If you keep the room above 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 auricula sparingly. Feed with a dilute, potassium-rich liquid feed every 2 weeks from bud formation through to late spring; after flowering switch to a balanced feed monthly until late summer. 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 auricula in the Growli community. Each is annotated with the most common cause so you know where to start.

• Vine weevil — One of the most serious threats to pot-grown auriculas; larvae eat roots from below causing sudden wilting and collapse. Apply biological nematode control (Steinernema kraussei) in late summer and autumn.
• Aphids and root aphids — Both foliar and root-feeding aphids attack auriculas; root aphids are particularly difficult to spot — check roots when repotting and treat with a systemic insecticide or drench if colonies are found.
• Grey mould (Botrytis cinerea) — Affects leaves and flower stems in damp, still conditions; remove dead material promptly and improve air circulation, especially when overwintering under glass.

Propagation

Detach rooted offsets (side rosettes) from the main stem in late spring after flowering, pot individually, and keep in a cold frame; also propagated from fresh seed sown on the surface of moist, gritty compost in late winter. 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

Auricula is toxic to pets. The ASPCA lists Primula (primrose) as toxic to dogs, cats, and horses. The specific toxic principle is unknown; clinical signs include mild to moderate vomiting and gastrointestinal upset. Some individuals are also skin-sensitised by handling the leaves. 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.

Auricula deep-dive guides

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

• Common auricula problems & fixes
• Auricula watering schedule
• Auricula light requirements
• Best soil mix for auricula
• Auricula fertilizing guide
• When to repot auricula
• How to propagate auricula
• How to prune auricula
• What's eating my auricula?
• Auricula growth rate & size
• Auricula cold hardiness
• Auricula temperature & humidity
• Is auricula toxic to cats & dogs?
• Is auricula toxic to cats?
• Is auricula toxic to dogs?
• All 18 Primula varieties
• Getting auricula to bloom

Featured in these plant shortlists

Auricula qualifies for 6 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.
• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• 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 small & tabletop houseplants — Compact houseplants that stay under about 40 cm — desk, shelf and windowsill plants that never outgrow a small space.
• 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.
• Best fragrant houseplants — Indoor plants with scented flowers or aromatic foliage — greenery you can smell, selected from our care library.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Auricula is also known as Auricula, Bear's ear, and Mountain cowslip.

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