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Plant care

Philodendron Lynamii (Lynamii) care

Philodendron lynamii

Also called Lynamii, Lynam's Philodendron.

RHS H1bUSDA 11-12Toxic to petsIndoor Climbs to about 1.5-2.5 m indoors on a pole

Watering rhythm

6-9days

When the top 3-4 cm of mix is dry, roughly every 6-9 days

Light

Bright indirect light (just back from a sunny window)

Soil

Chunky, well-aerated aroid mix

Humidity

60-80%

Temp

18-29°C

Pet safety

Toxic to pets

Mature size

Climbs to about 1.5-2.5 m indoors on a pole

Care at a glance

Light

Philodendron Lynamii 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. Bright, indirect light brings out the strongest pink-bronze new growth; an east or filtered south exposure suits it. Direct sun bleaches and scorches the leaves, while dim light mutes the colour and produces small, widely spaced foliage. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.

Watering

Water philodendron lynamii when the top 3-4 cm of mix is dry, roughly every 6-9 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. Water deeply, allowing excess to drain, then let the surface dry before the next round. It likes consistent moisture but rots quickly if the roots stay saturated. Cut back noticeably during the lower-light winter months.

Soil and pot

Philodendron Lynamii grows best in chunky, well-aerated aroid mix. Use orchid bark, perlite, coco coir and a handful of worm castings for an open, free-draining medium. Standard potting soil compacts and holds too much water for this hemi-epiphyte's oxygen-hungry roots. 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

Philodendron Lynamii sits happiest at around 60-80% humidity and 18-29°C (65-84°F). High humidity supports the large leaves and vivid new growth; below 50% the colour flushes are weaker and edges may brown. Use a humidifier or grouping. Many collectors acclimate young plants gradually from a humid cabinet to room air. 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 philodendron lynamii sparingly. Apply a balanced liquid fertiliser at half strength every 3-4 weeks through the growing season to fuel the large leaves and frequent flushes. Stop feeding in winter. Periodically flush the soil to prevent fertiliser-salt buildup that browns leaf tips. 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 philodendron lynamii in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Weak or absent pink colorationNew growth stays plain green in low light. Provide brighter indirect light to encourage the characteristic pink-to-bronze flushes.
  • Yellowing leaves with mushy stemsOverwatering or a compacted mix. Repot into an airy aroid blend, confirm drainage, and let the top dry before watering again.
  • Browning leaf marginsTypically low humidity or salt buildup. Raise humidity, flush the soil, and water with rain or filtered water if tap water is hard.
  • Thrips damaging new growthThrips love tender pink leaves and leave silvery scarring. Isolate, wipe down foliage, and treat with neem or insecticidal soap repeatedly.

Propagation

Take stem cuttings bearing a node and ideally an aerial root, then root in sphagnum moss, water, or a perlite mix inside a humid, warm enclosure. Pot on once roots are several centimetres long and well-branched. 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

Philodendron Lynamii is toxic to pets. The ASPCA classifies Philodendron as toxic to cats and dogs. It contains insoluble calcium oxalate crystals throughout its tissues; biting or chewing causes oral and tongue irritation, profuse drooling, pawing at the mouth, vomiting and trouble swallowing. Site it well away from pets and small children. 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.

Philodendron Lynamii care — frequently asked questions

What is the common name for Philodendron lynamii?

Philodendron lynamii is most commonly called Philodendron Lynamii, but it is also known as Lynamii, Lynam's Philodendron. The names refer to the same species, so care instructions for Philodendron Lynamii apply identically to anything sold as Lynamii.

How much light does philodendron lynamii need?

Philodendron Lynamii grows best in bright indirect light (just back from a sunny window). Bright, indirect light brings out the strongest pink-bronze new growth; an east or filtered south exposure suits it. Direct sun bleaches and scorches the leaves, while dim light mutes the colour and produces small, widely spaced foliage.

How often should I water philodendron lynamii?

Water philodendron lynamii when the top 3-4 cm of mix is dry, roughly every 6-9 days. Water deeply, allowing excess to drain, then let the surface dry before the next round. It likes consistent moisture but rots quickly if the roots stay saturated. Cut back noticeably during the lower-light winter months. 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 philodendron lynamii toxic to cats and dogs?

Philodendron Lynamii is toxic to pets. The ASPCA classifies Philodendron as toxic to cats and dogs. It contains insoluble calcium oxalate crystals throughout its tissues; biting or chewing causes oral and tongue irritation, profuse drooling, pawing at the mouth, vomiting and trouble swallowing. Site it well away from pets and small children.

What USDA hardiness zone does philodendron lynamii grow in?

Philodendron Lynamii is rated for USDA zone 11-12 (indoor in most US homes) and RHS hardiness H1b. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Philodendron Lynamii deep-dive guides

Every aspect of philodendron lynamii care, each with its own calibrated guide:

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Philodendron Lynamii qualifies for 5 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Philodendron Lynamii is also commonly called Lynamii or Lynam's Philodendron.