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Plant care

Osbeck's Rock Rose (Teide rock rose) care

Cistus osbeckiifolius

Also called Osbeck's rock rose, Teide rock rose.

RHS H2USDA 10-11Mildly toxic to petsIndoor Up to 1.2–1.5 m tall by 1–1.5 m wide (4–5 ft × 3–5 ft).

Watering rhythm

Direct sun (at least 4-6 hours)

Low — drought-tolerant once established

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Light

Direct sun (at least 4-6 hours)

Soil

Poor, rocky, volcanic or gritty, very free-draining

Humidity

Low to moderate (30–55% RH)

Temp

2 to 30°C

Pet safety

Mildly toxic to pets

Mature size

Up to 1.2–1.5 m tall by 1–1.5 m wide (4–5 ft × 3–5 ft).

Care at a glance

Light

Aim for at least 4-6 hours of direct sun on the leaves. Requires full, unobstructed sun; in its native habitat it grows in the open, high-altitude volcanic landscape of Teide with very high UV and light intensity. If your only bright window faces south, that's perfect for osbeck's rock rose — same window any aroid would fry on.

Watering

Watering osbeck's rock rose: low — drought-tolerant once established. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Water sparingly; in its native high-altitude habitat precipitation is seasonal and soils drain rapidly through volcanic rock. Overwatering in cultivation leads to root rot.

Soil and pot

Osbeck's Rock Rose grows best in poor, rocky, volcanic or gritty, very free-draining. Naturally grows on pumice and volcanic substrates; replicate with a very gritty, low-nutrient mix with a near-neutral to slightly alkaline pH. 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

Osbeck's Rock Rose sits happiest at around Low to moderate (30–55% RH) humidity and 2 to 30°C (36 to 86°F). The high-altitude Canary Islands habitat has moderate humidity but excellent air circulation; stagnant humid conditions at low altitude may predispose plants to fungal problems. If you keep the room above 2 to 30°C 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 osbeck's rock rose sparingly. No fertiliser required; feed only very sparingly (if at all) to avoid promoting soft growth that is susceptible to the cool, damp conditions of temperate climates. 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 osbeck's rock rose in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Cold and frost damage — As a tender Canary Islands species it is not frost-hardy; even light frosts below 0°C (32°F) can kill unprotected plants. Grow in a frost-free greenhouse or conservatory in temperate climates.
  • Root rot in cool, wet conditions — Very susceptible to phytophthora and pythium root rot when grown in cool, moist temperate soil; use a very coarse, volcanic or grit-based compost and avoid overhead watering.

Propagation

Semi-ripe cuttings in late summer in a warm, frost-free environment with bottom heat; seed sown in spring in a heated propagator. Rarely encountered in cultivation and best obtained from specialist nurseries. 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

Osbeck's Rock Rose is mildly toxic to pets. Cistus osbeckiifolius is not listed on the ASPCA Toxic and Non-Toxic Plants database and no specific toxic compound has been confirmed in veterinary literature for this species. As a precaution, given the absence of explicit non-toxic confirmation, it is classified as mildly toxic; seek veterinary advice if pets ingest significant quantities. 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.

Osbeck's Rock Rose care — frequently asked questions

What is the common name for Cistus osbeckiifolius?

Cistus osbeckiifolius is most commonly called Osbeck's Rock Rose, but it is also known as Osbeck's rock rose, Teide rock rose. The names refer to the same species, so care instructions for Osbeck's Rock Rose apply identically to anything sold as Teide rock rose.

How much light does osbeck's rock rose need?

Osbeck's Rock Rose grows best in direct sun (at least 4-6 hours). Requires full, unobstructed sun; in its native habitat it grows in the open, high-altitude volcanic landscape of Teide with very high UV and light intensity.

How often should I water osbeck's rock rose?

Water osbeck's rock rose low — drought-tolerant once established. Water sparingly; in its native high-altitude habitat precipitation is seasonal and soils drain rapidly through volcanic rock. Overwatering in cultivation leads to root rot. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is osbeck's rock rose toxic to cats and dogs?

Osbeck's Rock Rose is mildly toxic to pets. Cistus osbeckiifolius is not listed on the ASPCA Toxic and Non-Toxic Plants database and no specific toxic compound has been confirmed in veterinary literature for this species. As a precaution, given the absence of explicit non-toxic confirmation, it is classified as mildly toxic; seek veterinary advice if pets ingest significant quantities.

What USDA hardiness zone does osbeck's rock rose grow in?

Osbeck's Rock Rose is rated for USDA zone 10-11 and RHS hardiness H2. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Osbeck's Rock Rose deep-dive guides

Every aspect of osbeck's rock rose care, each with its own calibrated guide:

Featured in these plant shortlists

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

Related guides

Osbeck's Rock Rose is also commonly called Osbeck's rock rose or Teide rock rose.