Christmas palm

Sun

Full sun to partial shade; give young plants protection from intense afternoon sun and acclimatise indoor plants gradually before moving them outside.

Water

Water regularly while establishing, keeping the root zone moist but not waterlogged. Established palms tolerate short dry spells, but grow best with regular moisture.

Soil

Well-drained sandy or loamy soil; use a free-draining container mix in pots. Avoid persistently wet ground.

Height

15-25 ft (4.6-7.6 m)

Spread

8-12 ft (2.4-3.7 m)

Flowers

Small creamy-white flowers in branched clusters below the crownshaft, usually in spring or summer; timing varies in tropical climates.

Foliage

Evergreen. Arching, glossy green, feather-like fronds above a smooth green crownshaft and a slender grey trunk.

Growth

Moderate in warm conditions; slow in cool weather or containers.

Care needed

Medium

• Pollinators
• Heat tolerant
• Wildlife

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Hard

Toughness

Needs looking after

Pick your zone, country, light and whether you have pets.

1. Planting day

   7 ft (2 m)

2. After 1 year

   7 ft (2.2 m)

3. After 2 years

   8 ft (2.3 m)

4. After 3 years

   8 ft (2.5 m)

5. After 5 years

   9 ft (2.8 m)

About 26 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Safe

Growth rate

Slow

• Water newly planted palms deeply whenever the upper soil starts to dry; do not leave the root ball standing in water.
• During active growth, apply a slow-release palm fertiliser containing magnesium and micronutrients according to its label.
• Spread 2-3 in (5-8 cm) of mulch over the root zone, keeping it clear of the trunk.
• Plant at the same depth as in the nursery pot; do not bury the trunk or crownshaft.
• Bring container plants into bright, frost-free shelter before nights become cold; reduce watering in winter without letting the root ball dry completely.

Pruning. Remove only fully brown fronds or unwanted flower and fruit stalks, using clean tools and keeping cuts clear of the trunk. Healthy fronds normally shed themselves; never cut off the growing tip or strip away green leaves.

Spring

Repot container palms if root-bound, moving up only one pot size and using a free-draining mix.

Late spring

Plant outdoors once the soil is warm, or gradually acclimatise sheltered container plants to outdoor light.

Summer

Check soil moisture frequently and feed actively growing palms with a labelled palm fertiliser.

Summer

Inspect new leaves for yellowing, distortion, scale insects and mites.

Autumn

Move container palms into bright, heated shelter before cold nights arrive.

Winter

Water sheltered plants sparingly and remove fallen fruit from paths beneath outdoor palms.

• Use a single palm as a vertical focal point in a warm, sheltered courtyard.
• Repeat palms along an entrance or driveway, leaving room for the mature canopy and falling fruit.
• Combine with broad-leaved tropical plants for contrasting leaf shapes around a patio.
• Grow in a large container beside a sunny terrace where it can be moved into winter shelter.

Garden styles it suits: Modern tropical, Luxury resort, Architectural minimal, Modern courtyard, Florida subtropical and Caribbean.

Plant it with: Croton, Ixora, Bromeliads, Bird of paradise, Cast-iron plant and Shell ginger.

Wildlife: Flowers attract visiting insects, and birds may eat the ripe fruit. Fallen fruit can attract wildlife beneath the canopy.

• Lethal yellowing disease: this palm is highly susceptible where the disease occurs, including parts of Florida and the Caribbean. Premature fruit drop, dying flower stalks and progressive yellowing need prompt professional diagnosis; affected palms usually require removal.
• Potassium or magnesium deficiency: older fronds develop spotting, yellow margins or premature decline. Use a balanced palm fertiliser suited to local soils rather than removing affected leaves while they remain green.
• Scale insects and spider mites: inspect leaves, especially under cover, and treat with a labelled horticultural oil or insecticidal soap; repeat as directed.
• Cold damage or waterlogged roots: browning and crown decline can follow chilling or poor drainage. Provide frost-free shelter and freely draining soil, and keep water out of saucers.

Not known to be toxic to people, cats, dogs or horses, although species-specific information is limited. The fruit is ornamental rather than a recommended food; swallowed fruit or seeds may cause stomach upset or pose a choking risk.

• Royal palm (Roystonea regia)

  Royal palm becomes much taller and more massive, with a thick, often swollen pale trunk and a much larger crown; its ripe fruit is dark rather than bright red.

• Golden cane palm (Dypsis lutescens)

  Golden cane palm naturally forms a clump of yellow-green stems and has no single prominent green crownshaft like Christmas palm.

• Alexander palm (Archontophoenix alexandrae)

  Alexander palm grows substantially taller and has distinctly pale or silvery leaflet undersides; Christmas palm has greener undersides and a more compact crown.

The common name refers to the bright red fruit clusters that often ripen around Christmas in the Northern Hemisphere.

Propagation. Grow from fresh seed taken from fully ripe red fruit. Remove the pulp, clean the seed and sow in a moist, free-draining medium kept around 80-90°F (27-32°C); germination can take several weeks to a few months. It is a solitary palm and cannot be divided;

Accepted botanical name

Adonidia merrillii

Native range

Borneo and Philippines.

Measured

Average height 1100 cm.

Sources: GBIF (CC BY 4.0) and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.