Hound's-tongue (Gypsy Flower) care

Light

Most houseplants will scorch where hound's-tongue thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Requires full sun for at least 6 hours per day; in shadier positions the stems become etiolated and the plant rarely flowers well. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for rarely, once established for hound's-tongue, 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. Highly drought-tolerant once established; water sparingly and ensure the substrate dries fully between waterings — waterlogged roots cause rapid crown rot.

Soil and pot

Hound's-tongue grows best in thin, sharply drained, low-fertility. Grows best in chalk, limestone, or sandy soils with a neutral to alkaline pH (6.5–8.0); rich compost encourages leafy growth at the expense of flowers. 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

Hound's-tongue sits happiest at around Low, 30–50% humidity and -20 to 25°C (-4 to 77°F). Adapted to open, breezy habitats with low ambient humidity; good air circulation around the rosette helps prevent the fungal crown rots that afflict it in wet autumns. 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 hound's-tongue sparingly. Do not fertilise — poor soil is essential; any added nitrogen produces coarse, non-flowering plants. 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 hound's-tongue in the Growli community. Each is annotated with the most common cause so you know where to start.

• Crown rot — Standing water or heavy clay soil rots the basal rosette over winter; ensure sharp drainage and avoid mulching close to the crown.
• Failure to flower (etiolation) — Insufficient sunlight or over-fertile soil causes large, soft leaves but no flowering stem in the second year — move to a sunnier, poorer site.
• Powdery mildew — Dense colonies in sheltered spots are prone to powdery mildew in late summer; improve air circulation and thin plantings.

Propagation

Primarily by seed: sow in situ in autumn or spring directly on the soil surface, as seeds need light and temperature fluctuation to germinate. Self-seeds freely once established. 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

Hound's-tongue is toxic to pets. Contains pyrrolizidine alkaloids (heliosupine, cynoglossine) that cause cumulative hepatotoxicity in horses, cattle, and other livestock; the same alkaloids are toxic to dogs and cats, causing liver failure, photosensitisation, and neurological signs. Avoid where browsing animals or pets can access the plant. 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.

Hound's-tongue deep-dive guides

Every aspect of hound's-tongue care, each with its own calibrated guide:

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

Featured in these plant shortlists

Hound's-tongue 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.
• 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

Hound's-tongue is also known as Hound's-tongue, Gypsy Flower, Dog's Tongue, and Common Hound's-tongue.

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• All 10153 plant care guides in the Growli library