(This plant comes in a 3.5 inch pot. You will receive a very similar plant to the one in the picture. It may or may not be blooming at the time of your purchase. The plant is shipped in its pot to prevent any damage to the roots).
Euphorbia heptagona is an easy-to-grow, deep green, cylindrical plant, very sparsely spined and about 1/2-inch in diameter. It is a suckering and branching plant about 6 to 10 inches tall with tiny leaves down the ridges of the top inch or so of each column (5 to 7 ridges per column).
Cold hardy to about 25°F.
Grows best if located sunny with a temperature minimum of 12°C. Allow the soil to dry out between the waterings.
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz