artagala :

The leaves of a plant growing in the open are generally very prickly Photograph by: Vengolis

Cultivation:

A plant of the tropics, where it is found at near the shoreline in areas with no dry season or with a short dryseason. It grows best in areas where annual daytime temperatures are within the range 18 - 26°c, but can tolerate 15 - 32°c. It prefers a mean annual rainfall in the range 1,500 - 2,500mm, but tolerates 1,000 - 3,000mm
Prefers a position in full sun, tolerating some shade. Grows best in heavier soils of moderate to high fertility. Tolerant of flooding and of quite high levels of salt in the soil.Prefers a pH in the range 6.8 - 7.2, tolerating 6.5 - 7.56.
The plant sometimes forms a dense undergrowth in mangrove swamps that can be troublesome in wood-cutting operations.
The plants do not exclude salt at the root level. In fact, their sap is salty and excess salt is secreted through the leaves, to be removed by rain or wind. Sometimes, the salt can be seen as a white crystalline layer on the upper surface.
When the seedpods ripen, they open explosively to propel the seeds up to 2 metres away

Propogation:

Seed

Harvesting:

Flowering: December-May

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