Spoiler
With the help of the flowers, the bushes, and the mini spells you can erase all the map except 3/4 of tile and the gravity blocks (I can erase the fowers but that would take a lot of time). If someone finds a way for deleting the 3/4 of a block please let me know. Since there isn't a way to save the game and start another (to get all the trophys) I'll wait l a day or two and then i will do the trophys.