Spurge plants, also known as euphorbia plants, are available in a wide range of sizes, colors, and shapes. There are over 2,000 species in this family. Euphorbia succulents are a subset of the euphorbiaceae family known for their ability to store large amounts of water. Cactus euphorbia, spurge laurels, and crown of thorns are just a few of the many varieties of Euphorbia succulents that can be grown in your garden or yard.