This plant has decorative leaves and an attactive form, however it must be kept in mind that the sap is very poisonous and the plant must be handled with care and caution.

Cuttings or seeds can be used to propagate Euphorbia cupularis. While seed propagation is most effective for generating new plants, it requires careful handling due to the explosive dispersal of seeds from mature capsules. When propagating with seeds, remove mature fruits from the plant, while taking care to avoid the plant’s toxic latex, and let them completely dry out in a warm, dry place. When the seeds are released, they can be planted in a potting mix with good drainage. Maintain a warm, sunny atmosphere while lightly covering the seeds with soil. Regularly water the soil, keeping it slightly moist. Germination, facilitated by filing the seed coat slightly, usually occurs within 14 days under warm conditions.

When propagating vegetatively, stem cuttings or truncheons are used. Choose a healthy stem, then cut it using a sanitized tool. Allowing the stem cutting to dry for a few daysto a week before planting is one of the more crucial aspects of cultivating euphorbias. As a result, the sap on the cut end will dry and prevent rotting by forming a callus. After that, plant it in a potting mixture with good drainage or in a rooting medium like river sand. Spring and summer are optimal for this method. To encourage root growth, provide enough sunlight, practice moderate watering, keep a warm temperature and ensure good ventilation. The cuttings will eventually form roots. Overwatering should be avoided to prevent stem rot. This combination of techniques offers viable options for expanding Euphorbia cupularis populations.