Press S to open the upgrade menu. Upgrade your plant parts to increase the speed of your sunlight, water and energy production. To make energy you need water and sunlight Ways to get sun: During the day you get sun automatically During the day, sun will fall from the sky (like in Plants vs Zombies), click it to get 10 sun. Ways to get water: Your roots collect water all the time automatically. Click the pool of water next to your plant. When it rains you will get a lot water. Once you reach a certain amount of energy, you can grow bigger.
