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Melon spurge (Euphorbia meloformis)

Source: Wikimedia Commons

Melon spurge

Beginner

Euphorbia meloformis

A melon-shaped Euphorbia with eight ribs striped light green and purplish-brown. Old flower stalks persist on the plant, a key difference from the similar E. obesa.

Growing Difficulty
Beginner
Temperature
5〜35℃
Lifespan
Perennial
Size
Under 10 cm tall, 5–10 cm across
Humidity
30〜50%
Watering
Light feeder; slow-release organic fertiliser as a base dressing

About

Euphorbia meloformis is endemic to the Eastern Cape of South Africa, around Kariega (Uitenhage), Gqeberha (Port Elizabeth), Makhanda (Grahamstown) and Peddie, where it grows in short grassland and gaps in succulent thicket on flats of limestone or calcrete. It is a small, spineless succulent rarely over 10 cm tall, forming a dome with a flattened top above a long taproot. The body is 5–10 cm across, with eight ribs striped light green to purplish-brown and reddish cross-bands. It is usually solitary but may clump with age. Plants are male or female; small yellow-green flowers appear at the top from early summer to autumn (November–March in habitat), and the flower stalks persist long afterwards. It differs from the similar E. obesa in its long-lasting stalks, finely hairy ovaries and wider spacing between tubercles and flowering points. The South African Red List rates it Near Threatened because of its small range and illegal collecting. The related subspecies valida is larger and prized when thick, hardened stalks persist. In Japan it is a standard item at specialist nurseries and is also seen in home centres. The white latex from wounds irritates skin and eyes, so take care.

Source: Wikipedia (CC BY-SA 4.0)

Size of the Melon spurge

The Melon spurge grows to Under 10 cm tall, 5–10 cm across.

Basic Info

Origin

South Africa (Eastern Cape)

Lifespan

Perennial

Size

Under 10 cm tall, 5–10 cm across

Temperature

5〜35℃

Humidity

30〜50%

Watering & Fertilizer

Light feeder; slow-release organic fertiliser as a base dressing

Growing Tips

Light & Placement

From spring to autumn keep it in sun and good air, out of the rain, with about 20–30% shade to prevent sunburn when conditions change.

Watering

Japanese sources class it as a summer or spring–autumn grower; either way it grows from spring to autumn. Water thoroughly when the mix is dry, less often on hot nights in midsummer, and keep it dry through winter dormancy.

Temperature & Overwintering

It has some cold tolerance but must be protected from frost and freezing; overwinter it in a sunny room or cold frame. Japanese references give 3–5°C as its limit.

Soil & Repotting

Use a free-draining mix with slow-release organic fertiliser mixed in. It has a long taproot, so a deeper pot suits it.

Propagation

Plants are male or female, so both are needed for seed. Offsets, when produced, can be removed and rooted.

Pests & Cautions

The white latex from wounds strongly irritates skin and eyes; wear gloves when repotting and do not rub your eyes.

EuphorbiaGlobularDioeciousSouth Africa

Melon spurge FAQ

QWhat is the growing difficulty level for Melon spurge?
A

Beginner. A variety suitable for beginners. No special equipment or experience is required—you can grow it without problems by setting up a basic cultivation environment.

QHow large does Melon spurge get?
A

The mature size of Melon spurge is Under 10 cm tall, 5–10 cm across. This may vary slightly depending on cultivation environment and individual differences.

QHow should I water and fertilize Melon spurge?
A

Melon spurge: watering & fertilizer — Light feeder; slow-release organic fertiliser as a base dressing. Aim for appropriate frequency and amount.

QWhat is the typical price for Melon spurge?
A

The price of Melon spurge varies significantly by variety, characteristics, size, and lineage. Please check GrowerDirect's price guide for the latest market information.

Last updated: September 23, 2026

References & Sources

Taxonomy & Authority

Accepted name: Euphorbia meloformis Aiton

Synonyms: Euphorbia falsa, Euphorbia infausta, Euphorbia meloformis falsa, Euphorbia meloformis magna, Euphorbia meloformis meloformis, Euphorbia meloformis pomiformis, Euphorbia meloformis prolifera, Euphorbia meloformis valida

Authority databases: GBIF · GBIF

Nomenclature follows global taxonomic authority databases.

Regulations & Conservation Status

CITES Appendix II

Listed in CITES Appendix II (under the listing of succulent Euphorbia spp.). International trade requires export permits, but no registration is needed to transfer plants within Japan. It is not regulated under Japan's Invasive Alien Species Act.

Sources: Species+ (CITES): Euphorbia meloformis / Ministry of the Environment: list of Invasive Alien Species

Regulations may change. Always verify the latest information with the relevant authorities.

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