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Plant care

Nymphaea 'Marliacea Carnea' (Flesh-Pink Marliac Waterlily) care

Nymphaea 'Marliacea Carnea'

Also called Flesh-Pink Marliac Waterlily.

RHS H5USDA 3-11Mildly toxic to petsIndoor Spread 1.2-1.5 m (4-5 ft) of surface coverage

Watering rhythm

Direct sun (at least 4-6 hours)

Permanently submerged; keep pond level steady

Light

Direct sun (at least 4-6 hours)

Soil

Heavy clay loam aquatic compost

Humidity

Ambient (aquatic)

Temp

15-30°C

Pet safety

Mildly toxic to pets

Mature size

Spread 1.2-1.5 m (4-5 ft) of surface coverage

Care at a glance

Light

Aim for at least 4-6 hours of direct sun on the leaves. Full sun gives the freest flowering - at least 6 hours of direct light. It tolerates light shade but pink colour is faintest and blooms fewest where sun is short. If your only bright window faces south, that's perfect for nymphaea 'marliacea carnea' — same window any aroid would fry on.

Watering

Watering nymphaea 'marliacea carnea': permanently submerged; keep pond level steady. 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. Grow in still water 30-75 cm (12-30 in) deep over the crown, an adaptable range for medium and larger ponds. Keep away from fountain spray. Replenish summer evaporation to maintain planting depth.

Soil and pot

Nymphaea 'Marliacea Carnea' grows best in heavy clay loam aquatic compost. Plant the rhizome in a mesh aquatic basket of heavy loam or aquatic compost, capped with washed gravel. Avoid floating peat-based or lightweight potting mixes that cloud the pond. 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

Nymphaea 'Marliacea Carnea' sits happiest at around Ambient (aquatic) humidity and 15-30°C (59-86°F). Not applicable as a percentage - foliage floats and roots stay submerged. Water depth and clarity govern culture, not ambient air humidity. If you keep the room above 15 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 nymphaea 'marliacea carnea' sparingly. Insert aquatic fertiliser tablets into the basket monthly during the growing season. Never broadcast soluble feed into open water, which encourages algae rather than the lily. 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 nymphaea 'marliacea carnea' in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Pale or faded pinkFlesh-pink colour washes out in shade and cool weather. Maximise direct sun to hold the warmest tone and increase bloom count.
  • Vigorous spreadA strong grower that can crowd a medium pond. Contain it in a basket, thin pads, and divide every 3-4 years to manage surface coverage.
  • Waterlily aphidsAphids mass on buds and emergent pads in warm spells. Hose them into the water for fish; avoid oil-based sprays that smother the foliage.
  • Congested rhizomeCrowded roots and spent compost cut bloom numbers and leaf size. Lift and divide every 3-4 years in spring, replanting a healthy growing tip in fresh aquatic loam.

Propagation

Divide the rhizome in spring. Lift the basket, sever firm sections each with a growing eye and roots, and replant in fresh aquatic loam under gravel. Seed will not reproduce the cultivar, so division is the only true-to-type method. 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

Nymphaea 'Marliacea Carnea' is mildly toxic to pets. Nymphaea is not individually listed in the ASPCA toxic/non-toxic database; the ASPCA's dangerous 'lily' entries are Lilium and Hemerocallis, which are unrelated to true waterlilies. As Nymphaea status is unconfirmed and chewing the pads has anecdotally caused GI upset (drooling, vomiting, lethargy) in pets, treat with caution and verify with a vet rather than assuming pet-safe. 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.

Nymphaea 'Marliacea Carnea' care — frequently asked questions

What is the common name for Nymphaea 'Marliacea Carnea'?

Nymphaea 'Marliacea Carnea' is most commonly called Nymphaea 'Marliacea Carnea', but it is also known as Flesh-Pink Marliac Waterlily. The names refer to the same species, so care instructions for Nymphaea 'Marliacea Carnea' apply identically to anything sold as Flesh-Pink Marliac Waterlily.

How much light does nymphaea 'marliacea carnea' need?

Nymphaea 'Marliacea Carnea' grows best in direct sun (at least 4-6 hours). Full sun gives the freest flowering - at least 6 hours of direct light. It tolerates light shade but pink colour is faintest and blooms fewest where sun is short.

How often should I water nymphaea 'marliacea carnea'?

Water nymphaea 'marliacea carnea' permanently submerged; keep pond level steady. Grow in still water 30-75 cm (12-30 in) deep over the crown, an adaptable range for medium and larger ponds. Keep away from fountain spray. Replenish summer evaporation to maintain planting depth. 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 nymphaea 'marliacea carnea' toxic to cats and dogs?

Nymphaea 'Marliacea Carnea' is mildly toxic to pets. Nymphaea is not individually listed in the ASPCA toxic/non-toxic database; the ASPCA's dangerous 'lily' entries are Lilium and Hemerocallis, which are unrelated to true waterlilies. As Nymphaea status is unconfirmed and chewing the pads has anecdotally caused GI upset (drooling, vomiting, lethargy) in pets, treat with caution and verify with a vet rather than assuming pet-safe.

What USDA hardiness zone does nymphaea 'marliacea carnea' grow in?

Nymphaea 'Marliacea Carnea' is rated for USDA zone 3-11 (hardy waterlily; rootstock overwinters below ice) and RHS hardiness H5. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Nymphaea 'Marliacea Carnea' deep-dive guides

Every aspect of nymphaea 'marliacea carnea' care, each with its own calibrated guide:

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Nymphaea 'Marliacea Carnea' 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

Nymphaea 'Marliacea Carnea' is also commonly called Flesh-Pink Marliac Waterlily.