How should you persuade your parents to buy you a tree?

tell them ''the tree is harmless i would water it everyday and keep it healthy and everything besides the tree is good for ppl it gives us oxygen to breath and it makes the place looks beautiful and pretty so please please plaese let me get a tree''or if they dont wanna buy a tree just tell them to buy seeds and a pot and dirt and u plant the tree=]i think it'll work=]