Downy Rock Jasmine (Pubescent androsace) care

Light

Most houseplants will scorch where downy rock jasmine thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun is essential; in lowland gardens, position so the cushion bakes dry between rains, mimicking the open, wind-exposed ridge habitats of its native range. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for very sparingly; nearly dry between waterings for downy rock jasmine, 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 only at the base and keep foliage dry at all times; in winter under UK conditions, move to an alpine house or provide overhead protection to prevent fatal waterlogging.

Soil and pot

Downy Rock Jasmine grows best in extremely well-drained gritty/tufa mix. Plant in near-vertical tufa crevices or a scree of 60–70% coarse grit with lean loam and no organic material that retains moisture around the collar. 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

Downy Rock Jasmine sits happiest at around Very low humidity and -30 to 18°C (-22 to 64°F). Requires dry, free-moving air; any persistently humid or sheltered microclimate encourages cushion rot — an alpine house with roof vents open is the ideal environment in the UK. 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 downy rock jasmine sparingly. A single very light feed of quarter-strength balanced liquid fertiliser in spring, or a thin grit top-dressing with a trace of slow-release fertiliser; avoid nitrogen-rich feeds. 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 downy rock jasmine in the Growli community. Each is annotated with the most common cause so you know where to start.

• Winter cushion rot — Persistent winter rain or condensation on the rosettes causes Botrytis grey mould and rapid crown decay; overhead glass or polycarbonate protection from late autumn to early spring is the single most effective preventive measure.
• Red spider mite (in alpine house conditions) — Dry, warm conditions inside a glass alpine house can encourage red spider mite; increase ventilation and mist surrounding surfaces (not the plant) to raise local humidity, or use a predatory mite such as Phytoseiulus persimilis.

Propagation

Detach individual rosettes in early summer and root in pure coarse grit; seed sown on gritty compost in autumn benefits from a natural cold period over winter before germination begins in early 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

Downy Rock Jasmine is mildly toxic to pets. Androsace pubescens is not listed in the ASPCA Toxic and Non-Toxic Plant database. In the absence of confirmed safety data, this species is classified as mildly toxic as a precaution. Contact a veterinarian if a pet ingests any part of 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.

Downy Rock Jasmine deep-dive guides

Every aspect of downy rock jasmine care, each with its own calibrated guide:

• Common downy rock jasmine problems & fixes
• Downy Rock Jasmine watering schedule
• Downy Rock Jasmine light requirements
• Best soil mix for downy rock jasmine
• Downy Rock Jasmine fertilizing guide
• When to repot downy rock jasmine
• How to propagate downy rock jasmine
• How to prune downy rock jasmine
• What's eating my downy rock jasmine?
• Downy Rock Jasmine growth rate & size
• Downy Rock Jasmine cold hardiness
• Downy Rock Jasmine temperature & humidity
• Is downy rock jasmine toxic to cats & dogs?
• Is downy rock jasmine toxic to cats?
• Is downy rock jasmine toxic to dogs?
• All 13 Androsace varieties
• Getting downy rock jasmine to bloom

Featured in these plant shortlists

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

• 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

Downy Rock Jasmine is also commonly called Downy rock jasmine or Pubescent androsace.

• Wild Rose care — light, water and common problems
• Japanese Rose care — light, water and common problems
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• All 10153 plant care guides in the Growli library