Elvengrass is a special, magical block formed by right-clicking on a grass block (based on vanilla dirt) with Edhelmir, consuming the crystal in the process. Note that this does not hold for jungle grass, that is based on jungle mud. An Elvengrass block resembles an ordinary grass block, but is blue-tinted instead of green and emits blue smoke. When destroyed it will only drop dirt unless a tool enchanted with Silk Touch is used.