Minecraft wiki entry for Things_not_to_do, associated text: Some players who have lapis lazuli use it for dyeing, but lapis lazuli is mainly used for enchanting. Blue dye can be obtained from a simple cornflower, not from a lapis lazuli, which can be only obtained from mining underground dangerously. Cornflower can be found nearly everywhere, from grassy plains to flower forests. They can also be grown by using bone meal on a grass block, which has a chance of sprouting a cornflower other than grass.