Binomial Name: Archontophoenix alexandrae
Common Name: Alexander Palm
Leaves: Pinnate fronds, green above and paler silvery green. Distinguished from Archontophoenix cunninghamiana (Bangalow Palm) which has fronds that are green above and green below.
Stem/Trunk: Grey and ringed and often enlarged at the base. The top of the trunk is bright green. Distinguished from Archontophoenix cunninghamiana (Bangalow Palm) which has a more mottled bark with patches and does not have the distinctive bright green top of the crown shaft.
Flower: Large creamy white flowers from the base of the crown shaft. Distinguished from Archontophoenix cunninghamiana (Bangalow Palm) which has a violet flower
Fruit: Red berries about 1cm in diameter. Distinguished from Archontophoenix cunninghamiana (Bangalow Palm) which are red with a waxy coating.
Flowering Period: Summer to Autumn
Height: 15 metres
Width: 3 metres
Aspect: Full sun to filtered light, morning sun, enjoys moisture so mulch and water regularly until established
Soil Type: Clay to sandy soils (add compost to sandy soil for best results)
Soil pH: 6.0. to 6.5
Fertiliser Treatment: Recommend rock minerals, slow release low phosoporus fertiliser suitable for natives, benefits from Seasol when being planted out, benenfits from fish emulsion and blood and bone. Can use pelletised chicken manures also beneficial as a mulch. Kangaroo and wallaby poo and Aussie animal scats are also beneficial when placed around the root zone. Benefits from compost being incorporated into the soil when the hole is dug
Mulch: Eucalyptus mulch (small to fine chips or leaf) is very beneficial for Aussie plants. Sugar cane mulch can be used up top 50mm thickness
Root System: Contained. Not invasive
Drought Tolerant: Once established. Keep well watered in first 2 years until waist high. Water in dry periods
Frost Tolerant: No
Salt Wind Tolerant: Yes
Fire Response: No. Does not recover from burning
Host Requred: No
Fast Growing: Slow
Gardens: Coastal, tropical, subtropical, native gardens, sensory gardens
Natural Occurrence: Occurs north Queensland
Known Plant Associations: Littoral and coastal rainforest species of north Queensland
Known Fauna Associations: Various bird, flying fox and insect species
Other Information: Has potential to become weedy out of its zone in north Queensland. It is recomended the Archontophoenix cunninghamiana (Bangalow Palm) be planted if being planted beside a natural area or bushland reserve. It is a self-cleaning palm.