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Plant care

Canary Island Sea Lavender care

Limonium pectinatum

Also called Canary Island sea lavender.

RHS H2USDA 9-11Pet-safeIndoor 30–50 cm tall and 40–60 cm wide.

Watering rhythm

1-2weeks

Every 1–2 weeks in growth; monthly in winter

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Light

Direct sun (at least 4-6 hours)

Soil

Very free-draining, gritty or volcanic

Humidity

Low (30–50%)

Temp

5°C to 30°C

Pet safety

Pet-safe

Mature size

30–50 cm tall and 40–60 cm wide.

Care at a glance

Light

Canary Island Sea Lavender needs sun on the leaves, not just bright ambient room light. Requires a minimum of 6 hours of direct, bright sun; in the UK it performs best in a south-facing greenhouse or conservatory where light is maximised through winter. 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 canary island sea lavender every 1–2 weeks in growth; monthly 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. Water moderately during the growing season, allowing the top third of the compost to dry between waterings. Keep almost completely dry in cool winter conditions to prevent root rot.

Soil and pot

Canary Island Sea Lavender grows best in very free-draining, gritty or volcanic. Use a loam-based compost mixed 50/50 with coarse horticultural grit or perlite; excellent drainage is critical and mirrors the species' volcanic rocky native habitat. 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

Canary Island Sea Lavender sits happiest at around Low (30–50%) humidity and 5°C to 30°C (41°F to 86°F). Adapted to dry, salt-laden oceanic breezes; good ventilation is important in a greenhouse setting to prevent fungal issues at low temperatures. If you keep the room above 5°C 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 canary island sea lavender sparingly. Feed once a month with a balanced liquid fertiliser at half strength during active growth (spring–summer); do not feed in winter. 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 canary island sea lavender in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Root rot in winter — The most common cause of loss when grown under glass; wet compost combined with low winter temperatures is rapidly fatal. Keep the pot on the dry side from October through February.
  • Red spider mite — Thrives in warm, dry greenhouse conditions; look for fine webbing and pale stippling on the stiff leaves. Raise humidity locally or use a predatory mite (Phytoseiulus persimilis) as a biological control.

Propagation

Semi-ripe stem cuttings taken in summer root readily under gentle bottom heat with a mist or polythene tent. Seed can be sown at 18–21°C 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

Canary Island Sea Lavender is pet-safe. Limonium (Limonium sp.) is listed as non-toxic to cats and dogs by the ASPCA. As with any plant material, ingestion of large amounts may cause mild gastrointestinal upset. 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.

Canary Island Sea Lavender care — frequently asked questions

What is Canary Island Sea Lavender?

Canary Island Sea Lavender (Limonium pectinatum) is a flowering plant with a low, spreading, woody-based sub-shrub with stiff, pectinate leaves and branching, wispy flowering stems. growth habit, reaching 30–50 cm tall and 40–60 cm wide. at maturity. Limonium pectinatum is a tender, shrubby perennial endemic to the coastal cliffs and rocky shores of the Canary Islands, where it is adapted to near-year-round warmth, salt winds, and fast-draining volcanic soils. It forms a spreading, low woody mound with stiff, comb-like leaves (the species name refers to the pectinate, comb-toothed leaf margins) and bears clusters of small flowers in summer.

How much light does canary island sea lavender need?

Canary Island Sea Lavender grows best in direct sun (at least 4-6 hours). Requires a minimum of 6 hours of direct, bright sun; in the UK it performs best in a south-facing greenhouse or conservatory where light is maximised through winter.

How often should I water canary island sea lavender?

Water canary island sea lavender every 1–2 weeks in growth; monthly in winter. Water moderately during the growing season, allowing the top third of the compost to dry between waterings. Keep almost completely dry in cool winter conditions to prevent 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 canary island sea lavender toxic to cats and dogs?

Canary Island Sea Lavender is pet-safe. Limonium (Limonium sp.) is listed as non-toxic to cats and dogs by the ASPCA. As with any plant material, ingestion of large amounts may cause mild gastrointestinal upset.

What USDA hardiness zone does canary island sea lavender grow in?

Canary Island Sea Lavender is rated for USDA zone 9-11 and RHS hardiness H2. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Canary Island Sea Lavender deep-dive guides

Every aspect of canary island sea lavender care, each with its own calibrated guide:

Featured in these plant shortlists

Canary Island Sea Lavender qualifies for 9 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Canary Island Sea Lavender is also commonly called Canary Island sea lavender.