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Plant care

Pyrenean Lily (Yellow Turk's-cap lily) care

Lilium pyrenaicum

Also called Pyrenean lily, Yellow Turk's-cap lily, Yellow martagon lily.

RHS H6USDA 4-7Toxic to petsIndoor 60–120 cm tall

Watering rhythm

Bright indirect light (just back from a sunny window)

Weekly during active growth; reduce after flowering

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Light

Bright indirect light (just back from a sunny window)

Soil

Moist but well-drained, humus-rich loam; tolerates chalk

Humidity

Moderate (40–60%)

Temp

-20 to 25°C

Pet safety

Toxic to pets

Mature size

60–120 cm tall

Care at a glance

Light

Pyrenean Lily is what florists mean by "bright spot, no direct sun" — close enough to a south or east window to feel the brightness, with a sheer curtain or a few feet of distance keeping the sun off the leaves. Prefers full sun on the stem and upper foliage with the base kept cool and shaded by low ground cover; avoid scorching hot midday exposure in southern gardens. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.

Watering

Water pyrenean lily weekly during active growth; reduce after flowering. 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. Keep soil evenly moist from spring through flowering, then taper off as foliage yellows. Good drainage is essential — waterlogged soil causes bulb rot.

Soil and pot

Pyrenean Lily grows best in moist but well-drained, humus-rich loam; tolerates chalk. Enrich planting holes with leaf mould or well-rotted compost; neutral to slightly alkaline pH (6.5–7.5) suits this species well. 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

Pyrenean Lily sits happiest at around Moderate (40–60%) humidity and -20 to 25°C (-4 to 77°F). Tolerates ambient outdoor humidity; in a glasshouse setting ensure good air circulation to prevent botrytis on foliage and flowers. 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 pyrenean lily sparingly. Apply a high-potassium liquid feed every two to three weeks from bud formation until the foliage begins to die back in late summer. 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 pyrenean lily in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Lily beetle (Lilioceris lilii) — Bright-red adults and their slimy brown larvae skeletonise leaves rapidly from late spring; hand-pick daily or spray with pyrethrin-based insecticide as soon as adults appear in April.
  • Botrytis (grey mould) — Wet, cool springs encourage Botrytis elliptica, causing brown oval leaf spots and rotting stems; improve air circulation, avoid overhead watering, and apply a copper-based fungicide if infection appears.

Propagation

Remove bulb offsets (bulbils at the base) in autumn and grow on in gritty compost; stem bulbils occasionally form in leaf axils. Seed is viable but takes 3–5 years to flowering size. 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

Pyrenean Lily is toxic to pets. All parts of true lilies (Lilium spp.) are highly toxic to cats — ingestion of even small amounts of pollen, petals, or leaves can cause fatal acute kidney failure within 24–72 hours. Dogs may experience gastrointestinal upset but do not develop renal failure. Toxic principle in cats is not fully characterised but is distinct from cardiac glycosides; immediate veterinary attention is required after any cat exposure. 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.

Pyrenean Lily care — frequently asked questions

What is the common name for Lilium pyrenaicum?

Lilium pyrenaicum is most commonly called Pyrenean Lily, but it is also known as Pyrenean lily, Yellow Turk's-cap lily, Yellow martagon lily. The names refer to the same species, so care instructions for Pyrenean Lily apply identically to anything sold as Yellow Turk's-cap lily.

How much light does pyrenean lily need?

Pyrenean Lily grows best in bright indirect light (just back from a sunny window). Prefers full sun on the stem and upper foliage with the base kept cool and shaded by low ground cover; avoid scorching hot midday exposure in southern gardens.

How often should I water pyrenean lily?

Water pyrenean lily weekly during active growth; reduce after flowering. Keep soil evenly moist from spring through flowering, then taper off as foliage yellows. Good drainage is essential — waterlogged soil causes bulb 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 pyrenean lily toxic to cats and dogs?

Pyrenean Lily is toxic to pets. All parts of true lilies (Lilium spp.) are highly toxic to cats — ingestion of even small amounts of pollen, petals, or leaves can cause fatal acute kidney failure within 24–72 hours. Dogs may experience gastrointestinal upset but do not develop renal failure. Toxic principle in cats is not fully characterised but is distinct from cardiac glycosides; immediate veterinary attention is required after any cat exposure.

What USDA hardiness zone does pyrenean lily grow in?

Pyrenean Lily is rated for USDA zone 4-7 and RHS hardiness H6. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Pyrenean Lily deep-dive guides

Every aspect of pyrenean lily care, each with its own calibrated guide:

Featured in these plant shortlists

Pyrenean Lily 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

Pyrenean Lily is also known as Pyrenean lily, Yellow Turk's-cap lily, and Yellow martagon lily.