Cat's-ear (False Dandelion) care

Light

Cat's-ear needs sun on the leaves, not just bright ambient room light. Requires full sun; it will not flower in shade and the rosette becomes etiolated — a characteristic that distinguishes it from true dandelions in lawn identification. A south or west-facing windowsill in the northern hemisphere is the default; anywhere else, expect the plant to stretch and pale out within a season.

Watering

Water cat's-ear low — very drought-tolerant once established. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Thrives in dry to moderately moist soils; the deep taproot accesses subsoil moisture during dry periods. Avoid waterlogging, which can cause crown rot.

Soil and pot

Cat's-ear grows best in poor to moderately fertile, well-drained sandy, loamy, or clay soil. Tolerates a wide pH range (mildly acid to mildly alkaline) and adapts to compacted lawn soils where other plants struggle. 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

Cat's-ear sits happiest at around Low to moderate (30–65 %) humidity and -20 to 30 °C (-4 to 86 °F). Tolerates the exposed, open conditions of meadows and lawns; no special humidity requirements. 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 cat's-ear sparingly. No fertilising needed; enriched soils encourage excess leaf growth and allow more competitive plants to outcompete it. 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 cat's-ear in the Growli community. Each is annotated with the most common cause so you know where to start.

• Persistent taproot making removal difficult — The deep taproot regrows if broken — use a long-handled weeding tool to extract the full root; repeated removal over two or more seasons is usually needed to eliminate plants from lawns.
• Powdery mildew in late summer — White powdery coating can appear on leaves during dry summers; usually cosmetic on a wildflower plant, but improve air circulation if growing as an ornamental and avoid overhead watering.

Propagation

Self-seeds prolifically from wind-dispersed achenes; deliberate propagation by sowing fresh seed on the surface of a low-fertility seed compost in autumn, or division of established rosettes 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

Cat's-ear is mildly toxic to pets. The ASPCA lists Hypochaeris radicata (Catsear) as toxic to horses, causing stringhalt — an exaggerated flexion of the hind legs leading to a hopping gait; the toxic principle is unknown. Its toxicity to cats and dogs is not confirmed in the ASPCA database. A mildly-toxic classification is applied as a precaution for companion animals until species-specific data is available. Consult a veterinarian promptly if ingestion is suspected. 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.

Cat's-ear deep-dive guides

Every aspect of cat's-ear care, each with its own calibrated guide:

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

Featured in these plant shortlists

Cat's-ear qualifies for 5 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.
• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• 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 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

Cat's-ear is also known as Cat's-ear, Hairy Cat's-ear, False Dandelion, and Flatweed.

• White Arrow Arum care — light, water and common problems
• Eastern Skunk Cabbage care — light, water and common problems
• Lords-and-Ladies care — light, water and common problems
• All 10153 plant care guides in the Growli library