Areca palm care: light, water and feeding

Light

Arecas are sun palms in the wild, and they bring that appetite indoors. Clemson recommends bright indirect light near an east, west or south window, and NC State says the same. On the Illinois Extension scale that means medium light at the very least, about 150 foot-candles, and the high band of around 300 foot-candles for real growth. In a dim room the canes stop producing fronds, the crown thins as old fronds die, and the plant slowly declines over a season or two.

Strong midday sun through glass is another matter. Outdoors the palm tolerates full sun, but UF/IFAS notes that young palms in full sun develop yellow leaves and benefit from shade until they are several feet tall. Indoors, place the pot a few feet back from a south or west window or behind a sheer curtain, and if you summer it outside, follow Clemson's advice to step it up to brighter light gradually and keep it out of direct sun.

Water

NC State asks for mix that stays moist but not soggy through the growing season, and Clemson's palm rule is to water thoroughly when the surface dries, never let the pot dry out, and never let it stand in water. A finger pushed an inch into the mix tells you when: dry at that depth means water until it runs from the drainage hole, then empty the saucer within half an hour. A big clump of canes in a sunny window can use water surprisingly fast in July.

The areca is sensitive to what is in the water as well as how much. Fertilizer salts and minerals from hard tap water collect in the mix and burn the leaflet tips. The Illinois Extension suggests leaching houseplant pots every 4 to 6 months by running a large volume of plain water through and letting it drain completely. Rainwater or filtered water helps if your tap water leaves white crust on the pot rim.

In winter the palm slows and the mix stays wet longer. Keep checking the top inch instead of keeping a summer rhythm, and keep the pot away from cold glass where wet roots chill.

Soil and pH

NC State recommends a well-drained potting soil. UF/IFAS notes that in the ground the palm prefers fertile, well-drained, acid soil, and Clemson asks for a porous palm mix with plenty of organic matter so it holds water and still drains. A peat- or coir-based mix lightened with pine bark fines and perlite fits that description. As organic mixes age they break down into poorly aerated muck, which UF/IFAS links to iron deficiency in long-potted palms, another reason not to leave an areca in the same mix for many years.

Humidity

This is the palm that suffers most in a heated apartment. NC State recommends high humidity and a humidifier if needed. Clemson suggests filling the pot saucer with gravel and water once indoor humidity drops below 50 percent, or using a room humidifier. Dry air does double damage: leaflet tips brown, and spider mites, which Clemson says attack areca palms readily, multiply fastest in warm, dry rooms.

Temperature

Clemson gives the ideal range as 65 to 70°F at night and 75 to 85°F during the day, which is warmer than most palms need. Normal room temperatures meet it in summer; in winter, keep the plant away from drafty doors, windows and air-conditioning vents. Clemson notes that most indoor palms suffer chilling damage below 45°F, with reddish-brown dead areas appearing a few days later, but Clemson's ideal night range for this palm starts at 65°F, so treat that as the floor.

Fertilizer

Fast growth means real nutrient demand. UF/IFAS lists nitrogen as the element most often in short supply for potted palms and points out that the golden petioles common on container-grown arecas are a nitrogen-deficiency symptom, not a variety trait. Clemson recommends a slow-release palm fertilizer with an analysis like 12-4-12 or 8-2-12, containing micronutrients such as iron, manganese, zinc, boron and copper, applied two to three times a year during spring and summer. More is not better: excess fertilizer browns lower leaf tips.

Work out the dose for your watering can with the fertilizer dilution calculator →

Repotting

NC State says to repot every 2 or 3 years. Clemson adds that palms do best with somewhat confined roots and warns that their root systems are fragile, so tease the root ball apart as little as possible. Move up in spring or early summer, when roots fill the pot or the mix dries out within a day or two, and go only 1 to 2 inches wider. A heavy pot helps keep a tall clump from tipping.

• Roots fill the pot and push up at the surface or out of the drainage hole
• The mix dries out within a day or two of a thorough watering
• The clump of canes presses against the pot rim

Propagation

Unlike a single-stemmed palm, the areca forms a true clump, and NC State recommends division or seed. In spring, unpot a large plant and cut the root mass into sections with a sharp knife so each has several canes and a good share of roots, as the Illinois Extension describes for clumping plants. Pot each division at once in fresh mix and keep it warm, humid and out of direct sun while it recovers. Seed is how nurseries start the palm, but plants indoors rarely flower or fruit.

Methods: Division of the clump, Seed · Best season: spring or early summer.

Common problems

Spider mites top the list. Clemson calls areca palms very susceptible, and NC State adds scale and whiteflies; UF/IFAS notes that scale is often followed by black sooty mold growing on the honeydew. Inspect the undersides of leaflets whenever you water. The other common complaints are nutritional, and the pattern on the fronds tells you which: uniform paling of the oldest fronds points to nitrogen, while translucent yellow-orange spotting with frizzled tips on old fronds is the potassium deficiency UF/IFAS describes on this species.

Not sure which one it is? Try the plant problem diagnosis tool →

Is the areca palm toxic to cats and dogs?

The ASPCA lists the areca palm, under Dypsis lutescens, as non-toxic to cats, dogs and horses, so a pet chewing the fronds is not a poisoning emergency. For people, NC State notes one caution: the heart of palm, meaning the growing tip and young leaf buds, contains cyanogenic compounds and should not be eaten, with nausea and vomiting as the symptoms. That part is buried in the crown and does not come off with a nibbled leaflet.

Check any other plant against the ASPCA lists →