Hairy Rock Jasmine (Villous Androsace) care

Light

Hairy Rock Jasmine needs sun on the leaves, not just bright ambient room light. Full sun is required. This species grows on open, exposed rocky slopes, scree, and cliff ledges at high altitude. In cultivation it needs an unobstructed sunny position to maintain compact, healthy rosettes and produce a good flower display in spring. 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 hairy rock jasmine sparingly; dry conditions preferred especially in winter. 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. Very drought-tolerant. Water lightly during spring growth and flowering. Reduce watering significantly in summer after flowering, and keep nearly dry in winter. Overhead moisture collecting in the hairy rosettes in winter is a primary cause of rot; base watering or rain protection is preferable.

Soil and pot

Hairy Rock Jasmine grows best in sharply draining gritty alpine scree. A mix of 60–70% coarse grit or fine gravel with loam and a little leaf mould provides ideal conditions. Neutral to slightly alkaline pH (6.5–7.5). The silvery hair on the leaves acts as a moisture buffer, but the root zone must remain freely draining at all times. A grit collar around the crown is beneficial. 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

Hairy Rock Jasmine sits happiest at around Low, 20–40% RH humidity and -20°C to 20°C (-4°F to 68°F). Adapted to the dry, well-ventilated conditions of high-mountain habitats. In humid, sheltered positions the silver hairy foliage can trap moisture and harbour fungal pathogens. Choose an open site with free air movement. 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 hairy rock jasmine sparingly. Minimal. A single light application of slow-release alpine fertiliser in early spring is sufficient. The species is adapted to lean, nutrient-poor mountain soils; excess nutrients promote lush, weakly rooted growth vulnerable to disease. 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 hairy rock jasmine in the Growli community. Each is annotated with the most common cause so you know where to start.

• Fungal rot in wet winters — Moisture trapped between hairy rosettes in cold, wet winters leads to botrytis or bacterial crown rot. Apply a coarse grit collar under the cushion, improve drainage, and consider protection with a glass or perspex pane that sheds rain while allowing airflow.
• Aphids on spring growth — Greenfly can colonise new spring shoots and flower stems. Treat with insecticidal soap or a light jet of water; monitor closely as infestations on small cushion plants can stress the whole plant quickly.
• Compacted, sluggish growth in heavy soil — Planted in clay or moisture-retentive soil, the cushion becomes congested and stops expanding. Lift and replant into a properly prepared scree or gritty alpine mix; the root system typically reveals few viable roots when grown in unsuitable conditions.

Propagation

Detach small rosettes as cuttings from the edge of the cushion in early summer after flowering. Root in pure gritty compost in a cool, shaded frame; high humidity is not required and will cause rot. Sow seed fresh in autumn in gritty compost in a cold frame; germination occurs the following spring after cold conditioning. Division of larger mats is possible 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

Hairy Rock Jasmine is pet-safe. Androsace villosa is not individually listed by ASPCA. The genus Androsace (family Primulaceae) has no documented toxic principles and is considered non-toxic to dogs and cats based on family-level characteristics and horticultural literature. 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.

Hairy Rock Jasmine deep-dive guides

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

• Common hairy rock jasmine problems & fixes
• Hairy Rock Jasmine watering schedule
• Hairy Rock Jasmine light requirements
• Best soil mix for hairy rock jasmine
• Hairy Rock Jasmine fertilizing guide
• When to repot hairy rock jasmine
• How to propagate hairy rock jasmine
• How to prune hairy rock jasmine
• What's eating my hairy rock jasmine?
• Hairy Rock Jasmine growth rate & size
• Hairy Rock Jasmine cold hardiness
• Hairy Rock Jasmine temperature & humidity
• Is hairy rock jasmine toxic to cats & dogs?
• Is hairy rock jasmine toxic to cats?
• Is hairy rock jasmine toxic to dogs?
• All 7 Androsace varieties
• Getting hairy rock jasmine to bloom

Featured in these plant shortlists

Hairy Rock Jasmine qualifies for 11 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best pet-safe houseplants — Houseplants the ASPCA lists as non-toxic to cats and dogs — every one verified against the ASPCA toxic and non-toxic plant list.
• 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 pet-safe low-maintenance plants — Non-toxic to cats and dogs and forgiving of forgotten watering — the easiest safe choices for a busy pet household.
• Best pet-safe flowering plants — Flowering houseplants the ASPCA lists as non-toxic to cats and dogs — colour and blooms in a pet home, without the worry.
• Best pet-safe plants for bright light — Non-toxic to cats and dogs and happy in a bright, sunny spot — safe plants for your best-lit windowsill.
• 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 cat-safe plants — Houseplants the ASPCA lists as non-toxic to cats (and dogs) — safe greenery for a home with a curious cat.
• Best dog-safe plants — Houseplants the ASPCA lists as non-toxic to dogs (and cats) — safe greenery for a home with a curious dog.
• Best small pet-safe plants — Compact, tabletop houseplants that are also ASPCA non-toxic to cats and dogs — safe greenery for a desk or shelf.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Hairy Rock Jasmine is also commonly called Hairy Rock Jasmine or Villous Androsace.

• Russian Arborvitae care — light, water and common problems
• Spanish Juniper care — light, water and common problems
• Prickly Juniper care — light, water and common problems
• All 8452 plant care guides in the Growli library