Cornflower is a flower found in plains, sunflower plains, flower forests, and meadows and can be used to craft blue dye. Cornflowers can be mined instantly with any tool and drop themselves when broken. They generate naturally on grass and dirt blocks and can also be found in plains villages. Potted Cornflowers can be placed in flower pots for decoration.

In Java Edition, applying bone meal to a grass block in specific biomes has a chance to generate Cornflowers. In Bedrock Edition, bone meal can also be applied directly to a Cornflower to grow more nearby.

Cornflowers can be used to craft Suspicious Stew, which grants a Jump Boost effect when consumed. Bees pollinate Cornflowers, increasing the honey level in beehives and nests. Additionally, oak, birch, and cherry trees grown near Cornflowers have a 5% chance to spawn with a bee nest containing bees. Cornflowers can be composted with a 65% chance to increase the compost level. They are sometimes sold by wandering traders for one emerald.