Bonemeal for sand?

You could create a procedure that activates on (Player right clicks on block), and when the player in question has bonemeal in their main hand and the block clicked is sand, you could spawn a bunch of plants on top of the grass.

plants like grass* or plants that normally generate in deserts such as cacti.

make your flowers generate at different Xs and Zs axis.. from where you click, you can make it go around it.

So on your right click procedure, add block to X+1, y, z.. add block to X-1, y, z..  etc.

Make this out of procedure blocks

When global RIGHT CLICK

IF block = sand AND item in main hand = bonemeal

DO {

IF random (0,1) > 50, AND get block at x y+1 z = air, DO {place cactus at x y+1 z}

IF random (0,1) > 50, AND get block at x+1 y z = sand, AND get block at x+1 y+1 z = air, DO {place cactus at x+1 y+1 z}

}

Duplicate the second "random (0,1)" line with different coordinates for each block you want to have a chance to place a cactus. (The first line doesn't need to check if the x y z block is sand, because you clicked on that block and checked for sand already.)

You're welcome! Tell me if you have any problems with it!