Archontophoenix alexandrae

Archontophoenix alexandrae
Source: Alejandro Bayer Tamayo

Archontophoenix alexandrae or Alexandra Palm is a fast growing palm tree with beautiful slender stem and feathery leaves.

It is easy to grow from seed but as a tropical, it needs warmth and humid air, so it is not the easiest is to palm tree to grow indoors. This palm tree is perfect for a warm greenhouse.

Description:

The stipe is cylindrical and up to 30 cm wide. The evergreen leaves are from 2 to 3.5 meters long with a highly visible central nervure. The divided leaves are smooth. They are green on the front and gray-green at the back.

The palm produces 40 to 80 cm long inflorescences, formed by three bracts, two male and one female. Tiny purple flowers grow at the end of the kittens.

The fruits of Archontophoenix alexandrae are small, round, red berries and numerous.

Common names:

Alexander palm, Alexandra palm, Alexandre palm, Australian King palm, King palm, Northern bangalow palm

Synonyms:

Archontophoenix alexandrae var. beatriceae, Archontophoenix alexandrae var. schizanthera, Archontophoenix beatriceae, Archontophoenix veitchii, Jessenia glazioviana, Ptychosperma alexandrae, Ptychosperma beatriceae, Ptychosperma drudei, Saguaster drudei

Etymology:

Archon means ruler and phoenix means date palm.
Alexandrae is given in honor of the former Queen of England and wife of the King of England, Edward VII, Alexandra.

Archontophoenix alexandrae in habitat

Archontophoenix alexandrae in habitat
Source: Forest & Kim Starr

Origin:

Queensland (Australia)



Habitat:

Tropical rainforest

Hardiness:

USDA zones 10-11, the leaves die at 5 °C, the plant dies at -3 °C

Care:

Difficult: requires a relatively high air humidity

Soil:

Sandy, humuferous and well drained

Exposure:

Light, no direct sunlight

Water:

Daily watering during the growing season but avoid standing water at the bottom of the pot. Use soft non-alkaline water at room temperature.
Provide high air humidity.

Fertilizer:

During the growing season: weekly fertilizing with universalliquid fertilizer.
During the winter: monthly.

Repotting:

Annually in the spring

Archontophoenix alexandrae fruit

Archontophoenix alexandrae fruit
Source: Alejandro Bayer Tamayo

Propagation:

Seed

Sowing instructions:

  • let the seeds soak in water for 2 days
  • plant the seeds 2-3 cm deep in well drained substrate
  • keep moist and with a high air humidity
  • bright light
  • 20 °C at night and 30 °C during the day
  • germination time: 1-3 months

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