Euphorbia (Trigona) African Milk Tall cactus-like succulent with upright habit. Easy to look after, pest resistant and a fast grower.

The leaves have a teardrop shape and tend to be present for only short periods, a growing season or two. If you provide poor care, then the leaves will be the first to drop off.

This plant needs good light levels and if you can't give this, a grow light will be required.

If the light being received is too low, you'll have little to no new growth. New leaves will only grow on one side of the plant and stems may also bend towards light sources rather than straight upwards.

This one in a 14 inch terra plastic container with drainage holes. 

Euphorbia Cactus Plant care: 

Soil: Well-draining soil, great drainage. 

Light:  Prefers bright, indirect light. This plant needs good light levels and if you can't give this, a grow light will be required.   If the light being received is too low, you'll have little to no new growth. New leaves will only grow on one side of the plant and stems may also bend towards light sources rather than straight upwards.

Water:  Water when top 1 inches of soil are dry to the touch.  This is not a true cacti and will thirst quicker. 

Protect from frost. Not cold hardy tolerant.