Euphorbia decaryi var. decaryi
(This plant comes in a 3.5" 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).
Description: E. decaryi is a small, leafy succulent with a shrub-like development. It is a mat-forming species and spreads almost horizontally on the ground by means of rhizomes.
The Euphorbia decaryi growth form illustrates the typical horizontal habit of most Madagascan euphorbias.
Flowers: Beige, bell-shaped.
Cultivation: E. decaryi is one of those plants that turn out to be difficult if treated as a difficult plant and kept too dry. They are indeed easy to cultivate although slow growing. In the heat of summer, the plant needs a good amount of water. Even in winter its soil should never completely dry out. Though it tolerates a dry over-wintering, it then gets in trouble in spring when it has to produce new roots. These plants don't seem to love being blasted by the sun in the summer but prefer bright light, and will therefore not make demands on your prime growing space.
The ideal temperature in summer is about 25°C; in winter above 15°C. They can grow both in pots and in the ground in areas with mild climate, but they can even be grown indoors. Reported as cold sensitive they can indeed survive outdoors, where they proved to be able to take some light frost with minimal damage.
Use a very draining loose compost, and place the plant in a wide flat bowl. If the plant remains dormant after repotting, you can rouse it with a shock
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz