Evergreen Planting Frenzy

I made this game for a school project. The problem is, I have no idea what I'm doing. In this game, you plant seeds and water them to maturity as soon as possible. Your score is determined based on the amount of time you spend, the difficulty you select, and the lives you spend.

More detailed instructions below:

Controls:

    - Click buttons

    - ESC for pausing or exiting

How to play:

    - Select difficulty

        1. Easy starts at 30 seconds and you have 3 less seconds every level. You also have a total of 4 lives.

        2. Medium starts at 20 seconds and you have 2 less seconds every level. You also have a total of 3 lives.

         3. Hard starts at 12 seconds and you have 1 less second every level. You also have a total of 2 lives.

    - Start planting

        1. Click the green button with the seeds bag to start planting

        2. Click each of the plots ONLY ONCE EACH to plant seeds

    - Start watering

        1. Click the blue button with the watering can to start watering

        2. Click all the plots MULTIPLE TIMES to water the seeds

    - Have fun

        1. Total of 5 levels, enjoy the game and try to compete for a new high score (high scores don't save after you close the game so keep track of your high score a different way)!

        2. Example of gameplay here: