

Euphorbia submammillaris - Spurge
Euphorbia submammillaris - Spurge
Euphorbia submammillaris
Corncob Euphorbia, Corncob cactus
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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Description
Euphorbia submammillaris is a cactus with a very unusual texture and shape. It is a rare and original succulent with a compact tuft of countless short green-grey stems shaped like corn cobs, crowned with tiny lanceolate leaves. Its cushion remains low but densifies by regularly extending with the emission of new shoots. Its low hardiness and dwarf habit make it more suitable for pot cultivation, where it can be combined with other succulents with varied shapes and colors to create playful miniature compositions. This perennial tolerates drought and hot climates remarkably well, but is a bit less tolerant of scorching exposures in the south of Europe.
Euphorbia submammillaris belongs to the vast family of Euphorbiaceae. It is a cultivar of unknown origin, but its parents are believed to come from the Cape region of South Africa. It is a succulent plant that withstands drought well and thrives in a well-drained soil in full light, with some watering in summer. In winter, bring it indoors to protect it from frost.
Euphorbia submammillaris is a rhizomatous succulent plant that develops from a creeping stump. It forms small colonies of shoots about 15 cm (6in) tall and 30 cm (12in) wide. The plant has a compact cushion habit with short green-grey stems. The stems are in the form of short, narrow columns less than 1 cm (0in) in diameter, sometimes covered with a grey bloom, and divided into shallow ribs separated by deep furrows, with tiny bright green leaves. The stems and leaves contain a milky juice that is sticky and toxic.
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Flowering
Foliage
Plant habit
Safety measures
Botanical data
Euphorbia
submammillaris
Euphorbiaceae
Corncob Euphorbia, Corncob cactus
Cultivar or hybrid
atteintescutaneomuqueuses
Cette plante peut provoquer l'apparition de réactions cutanées indésirables, une atteinte des yeux, ou des difficultés respiratoires si elle est ingérée.
Ne la plantez pas là où de jeunes enfants peuvent évoluer. Evitez tout contact avec la peau: privilégiez l'emploi de gants pour la manipuler. En cas de contact, lavez-vous soigneusement les mains et rincez abondamment à l'eau la zone concernée. Lavez les vêtements entrés en contact. En cas de réaction cutanée, contactez votre médecin ou le centre antipoison le plus proche de chez vous. En cas d'atteinte étendue ou de difficultés respiratoires, appelez immédiatement le 15 ou le 112.Pensez à conserver l'étiquette de la plante, à la photographier ou à noter son nom, afin de faciliter le travail des professionnels de santé.
Davantage d'informations sur https://plantes-risque.info
Other Cacti and succulents
View all →Planting and care
Plant the Euphorbia submammillaris in light, dry, but above all very well-drained soil. A limestone, neutral or slightly acidic soil will suit this plant. Not very hardy, it does not tolerate temperatures below -2°C (28.4°F). It can be grown outdoors in the warmest gardens of our Mediterranean regions, which are dry in summer. Elsewhere, cultivate it in a pot with a substrate for succulent plants, which is less draining and more consistent than substrates for cacti, which should be kept dry throughout the winter in a bright, frost-free room. Excess humidity in winter can greatly reduce the hardiness of this plant. A soil rich in gravel and stones produces good results. This Euphorbia requires a very sunny exposure in the North, but tolerates partial shade in more southern regions.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).

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The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:
- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.