Species · genus Euphorbia · Euphorbiaceae

Triangular Spurge

Euphorbia antiquorum L.

Also known as: Antique Spurge · Malayan Spurge Tree

Growth habit

succulent tree

Native range

Assam, Bangladesh, Cambodia, East Himalaya, India, Jawa, Malaya, Myanmar, Pakistan, Sri Lanka, Thailand, Vietnam

Reference · E. antiquorum

Cultivars of E. antiquorum

The named forms growers keep — each with its own page, each honest about how much we know.

No named cultivars catalogued under E. antiquorum yet. When growers document a stable, named form, it earns its own page here.

Guide

The species-level account. Cultivar pages build on this and say where they differ.

A succulent tree native to the seasonally dry tropics of South and Southeast Asia, storing water in its ridged, branching stems. It wants gritty, fast-draining mix and deep but infrequent watering — let the soil dry out completely, then water only when the mix is dry several inches down. Give it the brightest light you can, ideally direct sun, and keep it on the dry side, as sitting wet will rot the stems.

Care recipe

The species record — the baseline every cultivar inherits unless it says otherwise.

Care notes are early — not yet verified

Light: ai:claude-opus-4-8
Water: ai:claude-opus-4-8 (range 14-28d)
Humidity: ai:claude-opus-4-8
Soil: ai:claude-fable-5
Care: ai:claude-fable-5

Light

Direct sun

Water

≈ every 28 days

Humidity

Low — average room

Temperature

13–32 °C

Soil mix

Gritty, sharply draining cactus mix

Propagation

Callused stem cuttings

Fertilizing

Weak cactus feed monthly in summer only

Growth rate

Slow

Flowering

Rarely flowers indoors

ToxicityAuthoritative · species

Toxic to cats & dogs & humans

Euphorbiaceae produce an irritant milky latex that can harm skin, eyes, and mucous membranes if ingested. This is where toxicity lives: every cultivar of this species inherits it and none can override it.

Reference images

Every image credited. Licenses link to their deeds.

No reference gallery yet

A few clear photos — habit, a mature leaf, a flower if it blooms — would give this page its eyes.

Add images

Sources: ai:claude-opus-4-8 · ai:claude-opus-4-8 (range 14-28d) · ai:claude-fable-5 · ai:claude-opus-4-8 (family inference)

Kept true by its growers

Every fact here carries its source. Grow Triangular Spurge yourself? What you’ve observed — how it drinks, how it holds its color, a name that’s off — is exactly what keeps this page honest. Contributions are reviewed before anything changes.