to get the moon seed you have to go in to the cave(if you havent got the power up yet)and
get the ground smasher power thingie and walk over to that frog looking thing and use your
new power on it and,it should spinn around wierdly,but hit the pink soft spot on its back
with the staff just with a wack and it wont die the first time,so just use the move and
wack the monster and the n youll get a moon seed,just plant it and it needs fire so just
have tricky use his flame cammand. ^-^ let me know if i helped any!!!!!

where do you get the power up at?