The four growth stages of a tomato plant are establishment, growth, flowering and ripening. Each stage is vital for a healthy plant.
In order for a tomato plant to take root, it needs chemicals like potassium, zinc, boron, calcium and nitrogen. These will help ensure steady growth and healthy roots.
During the second stage, the plant continues growing and needs many of the same nutrients it needed at the beginning of its life. Sulfur, calcium, magnesium and other nutrients can be found in the soil or added via a quality fertilizer.
The third stage of a tomato plant's life is when the plant begins to flower. Small flowers will develop before the plant grows fruit. The final stage is maturity and during this stage, the fruit grows to its maximum size and ripens.