Kiawe

neltuma pallida

Kiawe (Neltuma pallida, formerly Prosopis pallida) is an incredibly resilient, thorny tree in the legume family. Native to the dry coastal regions of South America, it has successfully naturalized across several tropical regions worldwide, most notably in the Hawaiian Islands. Renowned for its ability to thrive in hyper-arid and saline conditions where little else can grow, Kiawe plays a dual role: it is highly valued for producing premium honey, charcoal, and livestock feed, yet it is also viewed as a highly aggressive invasive species that outcompetes native vegetation. Its deep taproots and sharp thorns make it a formidable and dominant presence in arid landscapes.

Habitat: Found in dry coastal lowlands, arid shrublands, sandy beaches, and disturbed plains, frequently thriving in brackish or hyper-saline soils.

Appearance

Kiawe typically grows as a sprawling tree reaching heights of 8 to 15 meters, often featuring a highly twisted, rustic trunk and dusty grey-brown bark. Its branches are armed with sharp, stout thorns that can measure up to several centimeters in length. The foliage consists of pale, dusty-green, bipinnately compound leaves that help the plant minimize water loss under the scorching sun. During its flowering period, it produces dense, cylindrical spikes of pale yellow or greenish-yellow blossoms, which eventually mature into long, hanging, straw-colored seed pods resembling pale green beans.

KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderFabalesFamilyFabaceaeGenusNeltuma

Kiawe

Interesting facts

Every Kiawe tree in the Hawaiian islands is believed to descend from a single seed planted in Honolulu in 1828 by Father Alexis Bachelot.

Its thorns are so notoriously tough and sharp they are known to easily puncture bicycle tires and even thin-soled footwear.

Kiawe wood is globally famous for barbecue, imparting a distinct, sweet, and heavy smoky flavor that is highly sought after by chefs.

Special abilities

Deploys an exceptionally deep taproot system that can reach up to 50 meters underground, allowing the tree to access deep water tables during severe droughts.

Exhibits a superb ability to filter and tolerate high concentrations of soil salinity, allowing it to grow directly along oceanic coastlines.

Partners with specialized soil bacteria to convert atmospheric nitrogen into a usable organic form, enriching poor and sandy soils.

Measurements & details

Length: 800+ cm
Lifespan: 50+ years

Diet & Feeding

Like other plants, Kiawe is a photoautotroph that generates its own chemical energy by capturing sunlight and converting carbon dioxide and water into sugars.

Primary Foods

Sunlight
Water
Carbon Dioxide
Soil Nutrients

Ecological connections

mutualism

Western Honey Bee

Apis mellifera

Bees actively forage on the pale yellow flowers to produce a highly prized, delicate white honey.

eaten by

Cattle

Bos taurus

Grazing livestock feed on the sweet, fallen seed pods, subsequent dispersing the durable seeds in their manure.

competitor

Buffelgrass

Cenchrus ciliaris

An aggressive grass species that competes with Kiawe for water and nutrients in dry, fire-prone habitats.

Traits

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Also known as

No aliases listed yet.

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Safety

Danger

1/5 · Very low

No special safety notes yet.

Frequently Asked Questions

How to identify Kiawe?

The easiest way to identify Kiawe is to use the Snappit nature identifier app.

How long is Kiawe?

800+ cm

How long does Kiawe live?

50+ years

What does Kiawe eat?

Like other plants, Kiawe is a photoautotroph that generates its own chemical energy by capturing sunlight and converting carbon dioxide and water into sugars.

Where is Kiawe usually found?

Found in dry coastal lowlands, arid shrublands, sandy beaches, and disturbed plains, frequently thriving in brackish or hyper-saline soils.