Euphorbia aeruginosa is a very decorative spiny, succulent, forming dwarf, shrubs 15-30 cm in height and a subterranean caudex. Branches bluish-grey or brownish-green with many brownish spines. Branching occurs at or below ground level and above too. Its name, which means 'verdigris', refers to the coppery-green branches which have contrasting reddish-brown spines. This species, like the closely related Euphorbia schinzii, shows considerable variation.
Suited for a warm and humid climate, this thrives best in a little shades sunlight and responds well to warmth. It requires water when the soil becomes dry to touch specially during growing season and during summers. Watering should be minimal during winters
euphorbia is used for container Planting. Thematic Landscaping, Rockery
For watering cacti, the golden rule is to make sure the soil is completely dry before watering! This will stop the roots from rotting. It is advised to always use a pot with a drainage hole so that excess water can get drained out. If kept in a sunny area, you will need to water it once every week. If it is in a semi shaded or filtered light area, you might need to water it once in 2 weeks.
Cacti like soil that is well aerated and fast draining. You can fertilise the cactus in the summer months when it is in its growing season. During the winters it is best to cut back on any fertiliser and let the plant rest.