Arrowhead plant (nephthytis) care

Light

In the wild arrowhead plant grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Bright indirect light brings out pink and variegated colours. Tolerates medium light at the cost of vibrancy. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Aim for when the top 2-3 cm of soil is dry, every 7-10 days for arrowhead plant, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Likes consistent moisture but rots if soggy. Drooping leaves usually mean thirst.

Soil and pot

Arrowhead plant grows best in aroid mix. Two parts compost, one part orchid bark, one part perlite. A drainage hole is essential. 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

Arrowhead plant sits happiest at around 50-60% humidity and 18-27°C (65-80°F). Higher humidity produces larger glossier leaves. 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 arrowhead plant sparingly. Balanced liquid feed at half strength monthly from spring to early autumn. 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 arrowhead plant in the Growli community. Where a problem matches one of our diagnostic guides, click through for the full step-by-step recovery plan written for arrowhead plant specifically.

• Yellow leaves — Usually overwatering; check that the soil is drying between watering.
• Faded variegation — Move to brighter indirect light.
• Leggy growth — Insufficient light or no support; provide a moss pole to encourage mature leaves.
• Brown crispy edges — Low humidity or tap-water fluoride.

Propagation

Stem cuttings with at least one node root in water in 2-3 weeks. 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

Arrowhead plant is toxic to pets. ASPCA lists Syngonium podophyllum as toxic to cats and dogs due to insoluble calcium oxalates. Chewing causes oral irritation, drooling, and rare vomiting. 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.

Arrowhead plant deep-dive guides

Every aspect of arrowhead plant care, each with its own calibrated guide:

• Common arrowhead plant problems & fixes
• Arrowhead plant watering schedule
• Arrowhead plant light requirements
• Best soil mix for arrowhead plant
• Arrowhead plant fertilizing guide
• When to repot arrowhead plant
• How to propagate arrowhead plant
• How to prune arrowhead plant
• What's eating my arrowhead plant?
• Arrowhead plant growth rate & size
• Arrowhead plant cold hardiness
• Arrowhead plant temperature & humidity
• Is arrowhead plant toxic to cats & dogs?
• Is arrowhead plant toxic to cats?
• Is arrowhead plant toxic to dogs?
• All 17 Syngonium varieties
• Pet-safe alternatives to arrowhead plant

Featured in these plant shortlists

Arrowhead plant qualifies for 6 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
• Best trailing & climbing houseplants — Vining and trailing houseplants for shelves, hanging pots, and moss poles — selected by growth habit.
• Best humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Best houseplants to propagate in water — Houseplants that root from a cutting in a glass of water — the easiest, cheapest way to turn one plant into many.
• Best fast-growing houseplants — Houseplants documented as fast or vigorous growers — quick to fill a pot, cover a pole or trail down a shelf.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Arrowhead plant is also known as nephthytis, goosefoot plant, and American evergreen.

• Arrowhead plant yellow leaves — causes and the fix
• Arrowhead plant curling leaves — causes and the fix
• Arrowhead plant drooping — causes and the fix
• Arrowhead plant brown spots — causes and the fix
• Arrowhead plant mushy stem — causes and the fix
• Arrowhead plant no new growth — causes and the fix
• Boat-Shaped Orthophytum care — light, water and common problems
• White Air Plant care — light, water and common problems
• Thread-Leaf Air Plant care — light, water and common problems
• All 10153 plant care guides in the Growli library