From Day 1 you will have access to Dianne's house to help her clean her garden and earn money. You can play this game any time during the day and will take up one time slot. It will also help you to move forward her storyline.
This game is quite simple and just has you selecting the items she wants removed from her garden within the time limit. Some of the items are obvious like prickly weeds and spiders but also round fruits and vegetables are also undesirable.
The amount of items you need to remove seems to be random. The more items you remove the more money you can earn and if you get rid of all the unwanted items the game will automatically finish stopping the timer. Usually, you can earn around $100 from this mini-game.