What kind of milk is in a cactus plant?

There are appearantly only a few cactus species among the 2500 or so currently described that have milky-white sap in their bodies. All of these are withing the genus of Mammillaria, which are usually small to medium sized globose plants that will... read more

If the plant has showy, large flowers it is a cactus, if the flowers ar small and rather unimpressive, it is an euphorbia. Euphorbias also lack the specialized organ called an areole, where thorns and often flowers emerge, but this is not something a casual observer will readily notice. read more

Also known as African milk bush, friendship cactus and candelabra cactus, Euphorbia trigona is not a tree, bush or cactus. While the succulent African milk tree grows successfully in United States Department of Agriculture hardiness zones 8 and 9 with winter protection, it thrives best in zones 10 through 12. read more