1. In order to earn gold coins faster, choose the mode "Who Laughs Last". The setting of this mode is: you have 5000 sunshine at the beginning, and you will get 250 sunshine after each wave. You can set up the array in advance, and the plants have no cooling. This allows the lineup to be formed quickly, but sunflowers, sunshine mushrooms and the two free mushrooms cannot be selected. Zombies with high defense include Iron Bucket, Olive, and Iron Mountain Gate. Pay special attention to the clown zombies. If a plant is blown up, you will suffer heavy losses, so you need to get rid of them quickly. The picture below shows the selected plants. In order to earn gold coins, both are indispensable.

2. The starting lineup is as shown below. Leave two hundred sunlight to prevent the garlic or pumpkin heads from being eaten.

3. After the second wave, you can use the remaining sunlight to replace the garlic heads with new ones, and replace the rotten pumpkin heads with new ones. As shown below.

4. In the third wave, put a pumpkin head on the marigold to prevent dolphin zombies. As shown below.

5. Leave some sunshine during this process, you can add garlic and pumpkin heads, and you can easily pass the test. Defeat 5 waves in a row to earn gold coins, and finally win. You can use this method to earn gold coins, as shown below

The above is the relevant content about how to earn gold coins in Plants vs. Zombies. I hope it will be helpful to you!