Human: What are the most common mistakes gardeners make with tomatoes? Assistant: 

1. Overwatering: Tomatoes need to be watered regularly, but overly wet soil can lead to blossom end rot and other issues.
2. Not supporting plants: Staking or caging tomatoes should not be overlooked due to their heavy fruit load; failing to do so can cause the plants to topple and the fruit to rot.
3. Planting in cold soil: Tomatoes should be planted in soil that is warm, preferably above 55 degrees Fahrenheit.
4. Planting too closely: Crowded plants can be prone to disease, as air circulation is reduced and spores can be spread more easily.
5. Not rotating crops: Planting tomatoes in the same soil year after year can deplete valuable nutrients and promote disease.