At First time you need to have one of course you can get one by planting a Buttercup in your Garden. With 2 buttercups,you make this little pinata visit you.If you have 6 of them,it will be a resident
Now you have one. It makes things easy. Visit willy's and buy a Hive for 66 coins.Then feed it with a buttercup/daisy. After that,sell the honey for 100 coins or call Bart to transform it into medicine(Many people were asking this on forums!).
the Second time, Buy The Buzzlegum Keeper Hat. feed it with 1 or 2 daisys/buttercups.