Euphorbia ‘Cardinal’ is an ornamental succulent plant with a sculptural shape, featuring upright bluish-green stems with reddish hues. It loves full sun and hot, dry climates. It is very heat-tolerant but does not withstand frost (it should be protected below 10°C / 50°F). It requires moderate watering in summer and almost none in winter, with well-drained soil. Fertilization is recommended from April to September every 4–6 weeks. Its sap is toxic, so it should be handled with care.