If you're looking to plant tomatoes in Florida, the following tips will help you grow a healthy crop.
First, make sure that you choose a variety of tomato that is resistant to tomato spotted wilt virus (tswv) and bacterial wilt, two conditions that destroy tomato plants throughout the South. The best time to plant your tomatoes in Florida is just before frost season (fall), or once frost season no longer poses a danger (spring).
Choose a section of your garden that receives full sun for most of the day. The soil's pH level should be at least 6.5. If it's lower than that, raise it by treating it with lime. You can lower the pH level by adding iron or manganese to the soil. It's very important that tomato soil has good drainage, something Florida soil lacks since it tends to be sandy. To remedy this, mix in soil amendments like compost, crushed eggshells, or organic cow manure.
Determine how far deep you need to dig to fit the root ball and then go down about six inches further so that you can bury a few inches of the stem in addition to the root ball. Plant the seedling and refill the hole with soil. Plant the remaining seedlings, making sure they're at least 24 inches apart, further apart for the types of tomatoes plants that grow wide.
Once the tomatoes are planted, add mulch to help protect the plant from weeds as well as sudden major shifts in soil temperature. Cage the plants to protect them from small animals.
Prune your tomato plants as necessary. You'll want to keep as much foliage as possible on the plants to protect the tomatoes from sun damage.
Your plants will need about 2" of water per week. In dry weather conditions, give your tomato plants a full drenching once per week. Focus on watering the soil, not the leaves. Watering the leaves makes the plant vulnerable to diseases. Fertilize your tomatoes right after they're planted, and then about once a month. They love fish emulsion mixture.