Growth's projectile is a fx item in Valheim. Its in-game item ID is blobtar_projectile_tarball, which you can drop into the console with spawn blobtar_projectile_tarball to give yourself one — append a number like spawn blobtar_projectile_tarball 50 to spawn a stack. Growth's projectile is the internal tar-ball attack used by Growths in the Plains. It is not a player item. The spawn command requires cheats — enable them with devcommands after opening the console.
Spawns one Growth's projectile at your location.
Spawns one Growth's projectile at your location.
Spawns five Growth's projectile at your location.
Spawns twenty Growth's projectile at your location.
Growth's projectile is the internal tar-ball attack used by Growths in the Plains. It is not a player item.