At the moment this is quite a fun easy level. Unless they decide to change it.
Make as many rows next to the firecrackers as you can, they will explode and break the iced onions for you, they will also help open oysters and gather your crops.
Save your shovels for towards the end, because if you find yourself needing an oyster opened, its always good to have a shovel.
Combinations will get your needed points on crops.