Grass Blocks also have the interesting property that they will convert nearby [[Dirt]] blocks into grass blocks. It happens slowly, but eventually an entire dirt patch can be converted by a single grass block. This happens even without being directly in sight of the sky.
When right-clicked with [[Bone Meal]], Grass Blocks will sprout both tall grass and various kinds of native Minecraft flowers ([[Poppy]], [[Dandelion]], [[Allium]], etc.). Since these flowers cannot be cultivated like crops, this is the only way to produce more.
Like [[Dirt]], Grass Blocks can be turned into tilled soil suitable for farming by right-clicking with a hoe. Just as with dirt, the tilled soil made from grass will revert to being plain dirt if left too long without a water block nearby (within 4m).