Does bone meal cause grass to spread faster? It's been a minute since i played, but i remember making an island in the middle of an ocean and using bone meal to help spread the grass block that was dropped by an ender man.
SDF Minecraft
The SDF Minecraft Server
Mainly for screenshots of builds,
Server related discussions go on BBOARD, Including whitelist requests if the webform doesn't work.
Unofficial Map of the server: https://ewpratten.com/maps/minecraft/mc-sdf-org/
Unfortunately, it does not work. Bonemealing grass blocks just creates foliage (short grass, flowers, etc.) around the block. Moss blocks on the other hand convert natural blocks around them to moss when bonemealing them.
Best thing to do is, if you have silk touch, get a couple of grass blocks and dot them around the dirt to encourage spread from multiple locations.
Also is a good idea to AFK in the area so that there's more time for the grass to grow. At least if that's possible, I understand that it's not possible for everybody to AFK for long periods of time.