How can I restart the adventure level from level 1?

I want to ask how can I restart the adventure level from level 1? Do I have to complete the adventure level before I can start it again? I want to leave the game in between and start it afresh. Is there a way?

One way would be to create a new user(just select "if this is not you,click here' button(check screenie) and remove the old one .

Unless you want to erase your save file, the only way to restart from level 1-1 is to complete the adventure you're currently on.

Pay attention, anyway, that by completing the game you'll start an "improved" version of the Adventure. You'll keep all the plants you've previously found, and Crazy Dave will choose 3 seed packet that you can't remove and you have to play the current level with.