Growli

Plant care

Fragrant Peace Lily (Large Peace Lily) care

Spathiphyllum cochlearispathum

Also called Fragrant Peace Lily, Large Peace Lily, Mexican Peace Lily, Cochlearispathum Peace Lily.

RHS H1bUSDA 11-12Toxic to petsIndoor 0.9-1.5 m (3-5 ft) tall and up to 1 m wide indoors

Watering rhythm

5-10days

When the top 2-3 cm of soil is dry, roughly every 5-10 days

Light

Medium indirect light (a couple of metres from a window)

Soil

Rich, well-draining peat-based or coco-coir potting mix

Humidity

50-70%

Temp

18-30°C

Pet safety

Toxic to pets

Mature size

0.9-1.5 m (3-5 ft) tall and up to 1 m wide indoors

Care at a glance

Light

Fragrant Peace Lily wants the spot a few feet back from a sunny window — bright enough to read a paperback at noon, but the sun never falls directly on the leaves. Tolerates low to bright indirect light. It flowers most reliably in medium to bright indirect light near an east or north window. Direct sun scorches the large leaves. In deep shade it stays green but rarely blooms and growth slows noticeably. A faint hand shadow at midday is the right amount; a sharp dark shadow means it's getting direct sun and probably too much.

Watering

Water fragrant peace lily when the top 2-3 cm of soil is dry, roughly every 5-10 days. 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 but never waterlogged. This species wilts visibly when dry and rebounds quickly after watering, but chronic drought browns leaf tips and margins permanently. Water thoroughly until it drains, empty the saucer, and avoid leaving roots in standing water. Use filtered or room-temperature water if possible, as fluoride can cause tip burn.

Soil and pot

Fragrant Peace Lily grows best in rich, well-draining peat-based or coco-coir potting mix. Use a quality houseplant mix with added perlite for drainage. Slightly acidic pH around 5.8-6.5 is ideal. Avoid dense, heavy compost that stays wet and promotes root rot. A pot with drainage holes is essential; this large species needs repotting every 1-2 years. 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

Fragrant Peace Lily sits happiest at around 50-70% humidity and 18-30°C (65-86°F). Prefers moderate to high humidity. Below 40%, large leaf tips and margins brown and crisp. A humidifier, pebble tray, or grouping with other plants all help. Central heating in winter is the main threat; avoid placing near radiators or hot-air vents. If you keep the room above 18 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 fragrant peace lily sparingly. Feed every 4-6 weeks during spring and summer with a balanced, dilute liquid fertiliser at half strength. Over-feeding causes brown leaf-tip burn from salt build-up; flush the soil with water occasionally and reduce or stop feeding in autumn and winter when growth slows. 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 fragrant peace lily in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Brown leaf tips and marginsCaused by low humidity, fluoride or mineral build-up from tap water, or over-fertilising. Raise humidity, use filtered water, and dilute any fertiliser to half strength.
  • Dramatic wiltingThe plant collapses noticeably when dry as a built-in watering cue. Water promptly; chronic repeated wilting weakens the plant and permanently browns leaf edges.
  • Yellowing leavesMost often overwatering or soggy roots leading to root rot, though natural senescence of old leaves also causes yellowing. Check drainage and let only the top soil layer dry between waterings.

Propagation

Propagate by division during repotting in spring. Separate the clump into sections, each with several leaves and healthy roots, and pot up individually in fresh, moist compost. Keep warm and humid while establishing. Peace lilies do not root from leaf or stem cuttings. 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

Fragrant Peace Lily is toxic to pets. Toxic to cats and dogs. The ASPCA lists peace lily (Spathiphyllum) as toxic, with insoluble calcium oxalate crystals as the toxic principle. Ingestion causes intense oral burning, drooling, pawing at the mouth, vomiting, and difficulty swallowing. Unlike true lilies (Lilium), peace lilies do not cause acute kidney failure in cats, but veterinary attention is still advised after ingestion. 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.

Fragrant Peace Lily care — frequently asked questions

What is the common name for Spathiphyllum cochlearispathum?

Spathiphyllum cochlearispathum is most commonly called Fragrant Peace Lily, but it is also known as Fragrant Peace Lily, Large Peace Lily, Mexican Peace Lily, Cochlearispathum Peace Lily. The names refer to the same species, so care instructions for Fragrant Peace Lily apply identically to anything sold as Large Peace Lily.

How much light does fragrant peace lily need?

Fragrant Peace Lily grows best in medium indirect light (a couple of metres from a window). Tolerates low to bright indirect light. It flowers most reliably in medium to bright indirect light near an east or north window. Direct sun scorches the large leaves. In deep shade it stays green but rarely blooms and growth slows noticeably.

How often should I water fragrant peace lily?

Water fragrant peace lily when the top 2-3 cm of soil is dry, roughly every 5-10 days. Keep soil evenly moist but never waterlogged. This species wilts visibly when dry and rebounds quickly after watering, but chronic drought browns leaf tips and margins permanently. Water thoroughly until it drains, empty the saucer, and avoid leaving roots in standing water. Use filtered or room-temperature water if possible, as fluoride can cause tip burn. 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 fragrant peace lily toxic to cats and dogs?

Fragrant Peace Lily is toxic to pets. Toxic to cats and dogs. The ASPCA lists peace lily (Spathiphyllum) as toxic, with insoluble calcium oxalate crystals as the toxic principle. Ingestion causes intense oral burning, drooling, pawing at the mouth, vomiting, and difficulty swallowing. Unlike true lilies (Lilium), peace lilies do not cause acute kidney failure in cats, but veterinary attention is still advised after ingestion.

What USDA hardiness zone does fragrant peace lily grow in?

Fragrant Peace Lily is rated for USDA zone 11-12 and RHS hardiness H1b. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Fragrant Peace Lily deep-dive guides

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

Featured in these plant shortlists

Fragrant Peace Lily qualifies for 7 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Fragrant Peace Lily is also known as Fragrant Peace Lily, Large Peace Lily, Mexican Peace Lily, and Cochlearispathum Peace Lily.