Pandanus tectorius

Pandanus tectorius
Scientific name	Pandanus tectorius [1]
Common names	Hala; hala fruit; pandanus fruit; screw pine
Genus	Pandanus
Family	Pandanaceae
Order	Pandanales
Growth form	Tropical tree of lowland island habitats [2]
Native range	Pacific and Southeast Asia; lowland humid and subhumid tropical climates [2]
Climate and site	Cultivated to about 600 m in suitable tropical conditions [2]
Light	Full sun; intermediate shade of about 30–50% is tolerated, while heavier shade can stop flowering and fruiting [3]
Propagation	Branch cuttings, preferably planted during the wet season [3]
Pollination	Dioecious; male and female plants are needed when fruit and seed are wanted [2]
Fruit	A syncarp of about 40–80 drupes; edible forms are selected for lower calcium oxalate content [2]

Pandanus tectorius, commonly called hala, hala fruit, pandanus fruit, or screw pine, is a tropical tree of the Pacific and Southeast Asia. It is dioecious, so a planting intended to produce fruit or seed needs both male and female plants. ^[2]

Description

Pandanus tectorius is a lowland island tree with a syncarp fruit made up of roughly 40–80 drupes. ^[2] The species is associated with Pacific and Southeast Asian coastal and atoll environments and is valued as a multipurpose plant in those regions. ^[2]

Cultivation

The species is associated with lowland humid and subhumid tropical climates and is cultivated to about 600 m. ^[2] Its documented light range is broad, but fruit production depends on keeping the planting out of heavy shade. ^[3]

Soil and water

The species' lowland island and atoll setting does not establish a single soil texture or pH requirement. As a genus-level inference from that species context, begin with a free-draining root zone and adjust irrigation to how quickly the planting site drains rather than applying a fixed schedule; this is not a species-specific soil or pH threshold.

Sun and humidity

Full sun is suitable, and intermediate shade of about 30–50% is tolerated. Higher shade can stop flowering and fruiting. ^[3] The species is associated with humid and subhumid lowland climates, so protected tropical conditions are a better match than cool, dry sites. ^[2]

Seasonal changes

Branch cuttings are planted during the wet season, usually in full sun or up to roughly 25–30% shade. ^[3] This wet-season timing provides the most favorable establishment window described for the species; outside that period, irrigation should be adjusted to the site's drainage and drying rate rather than to a universal calendar.

Propagation

Branch cuttings can be planted during the wet season into their final field positions, normally in full sun or up to roughly 25–30% shade. ^[3] A vegetatively propagated plant retains the sex of its parent, so a fruiting planting still needs access to a male plant as well as female plants. ^[2]

Flowering, fruiting, and harvest

Male and female plants are required when fruit and seed are desired. ^[2] Heavy shade can stop flowering and fruiting, so fruiting plants should remain in full sun or only intermediate shade. ^[3] One documented growth estimate places the juvenile phase at roughly 4–9 years, followed by 5–12 years of erect growth and a productive life of 40–60 years or more under suitable conditions; these figures are not a guaranteed schedule for every planting. ^[2]

Fruit and uses

The fruit is a syncarp composed of approximately 40–80 drupes. Forms cultivated for food have been selected for lower calcium oxalate content, so edibility and preparation should be treated as form-dependent rather than generalized to every plant. ^[2] Pacific agroforestry material also documents edible cultivars and the plant's cultural and economic importance. ^[3] This information does not establish a blanket raw-fruit safety rule for all forms.

Photos

References

• ↑ [1] Pandanus tectorius - GBIF species match API.

• ↑ [2] Pandanus tectorius - Useful Tropical Plants.

• ↑ [3] Pandanus tectorius (pandanus) - Species Profiles for Pacific Island Agroforestry.

Image credits

• Hala (Pandanus tectorius).jpg — Cliff (Flickr user 28567825@N03), CC BY 2.0. Wikimedia Commons file page. Attribution: Cliff; license link: CC BY 2.0.

• Pandanus tectorius (5187732877) (2).jpg — David Eickhoff, CC BY 2.0. Wikimedia Commons file page. Attribution: David Eickhoff; license link: CC BY 2.0.