When Is The Best Time To Plant Tomatoes In Florida

If you’re a Florida gardener, you know timing is everything. Knowing when is the best time to plant tomatoes in Florida is the single most important step for a successful harvest.

Our unique climate, with its long growing season and intense heat, requires a specific schedule. Planting at the wrong time can lead to poor fruit set or disease. This guide will walk you through the optimal planting windows for your region and give you the tips you need to grow your best tomatoes yet.

Florida’s planting schedule is opposite of most of the country. Instead of a spring planting, we have two main seasons: late summer/fall and late winter/early spring. The goal is to avoid our hottest and coldest months, allowing tomatoes to grow during milder weather.

The state is divided into three main gardening regions, and each has slightly different ideal dates.

North Florida (Zones 8-9a)

This region can experience frosts and freezes. The primary planting is for a spring harvest.

Spring Planting: Transplant seedlings into the garden from late February through mid-March. Wait until the danger of frost has passed.
Fall Planting: A riskier, secondary season. Plant seeds indoors in mid-July for transplanting in late August to early September.

Central Florida (Zones 9b-10a)

Central Florida has the most flexable planting schedule due to its longer warm period.

Fall Planting: This is often the best season. Start seeds indoors in early August. Transplant seedlings from early September to early October.
Spring Planting: Plant seeds indoors in December or January. Transplant seedlings from late January through February.

South Florida (Zones 10b-11)

South Florida’s subtropical climate allows for a long fall season and a very early spring season.

Fall Planting: The prime season. Start seeds in August or early September for transplanting from September through October.
Spring Planting: Plant in very early spring, typically transplanting in January or early February at the latest.

Why You Can’t Plant Tomatoes in Summer

Attempting to grow tomatoes through a Florida summer is an uphill battle. Daytime temperatures consistently above 90°F and high nighttime temperatures cause several problems.

Blossom Drop: Pollen becomes sterile, so flowers fall off without setting fruit.
Increased Pest & Disease Pressure: Insects like whiteflies and diseases like bacterial wilt thrive in the heat and humidity.
Poor Fruit Quality: The plant is stressed, leading to smaller, less flavorful tomatoes.

Step-by-Step Planting Guide for Florida

Once you have your dates, follow these steps for getting your tomatoes established.

1. Choosing the Right Varieties

Select varieties bred for heat-set and disease resistance. Look for codes like VFN on the tag, which indicate resistance to common soil-borne diseases.

Recommended for Florida: ‘Florida 91’, ‘Solar Fire’, ‘Celebrity’, ‘Better Boy’, ‘Sweet 100’ (cherry), and many heirloom varieties do well in the fall.
Where to Buy: Source seeds or seedlings from local nurseries or reputable online retailers that specialize in southern seeds.

2. Site Preparation & Soil

Tomatoes need at least 6-8 hours of full sun. Florida’s sandy soil needs significant amending.

Test Your Soil: A simple test from your county extension office tells you pH and nutrient levels. Tomatoes prefer a pH of 6.2-6.8.
Amend the Soil: Mix in 3-4 inches of quality compost or well-rotted manure into the planting area. This improves drainage and nutrient retention.
Consider Raised Beds: They provide excellent drainage and allow you to control the soil mix, which is a huge advantage.

3. Planting Your Tomatoes

Proper planting technique encourages a strong root system.

Plant Deeply: Bury 50-75% of the seedling! Pinch off the lower leaves and plant the stem horizontally or vertically deep in the soil. The buried stem will grow additional roots.
Space Correctly: Place plants 24-36 inches apart to ensure good air circulation, which is crucial for preventing fungal diseases.
Water Immediately: Water thoroughly at the base of the plant to settle the soil.

4. Essential Care After Planting

Consistent care is key, especially in the first few weeks.

Mulch Heavily: Apply 2-3 inches of pine straw or wheat straw mulch. This keeps roots cool, conserves water, and prevents soil-borne diseases from splashing onto leaves.
Watering: Water deeply 2-3 times per week, depending on rainfall. Avoid overhead watering to keep leaves dry. Drip irrigation or soaker hoses are ideal.
Support Early: Install cages or stakes right after planting to avoid damaging roots later. Indeterminate varieties need tall, sturdy supports.

Common Florida Tomato Problems & Solutions

Even with perfect timing, you may face these issues. Here’s how to manage them.

Pests

Whiteflies & Aphids: Blast with water or use insecticidal soap. Encourage beneficial insects like ladybugs.
Tomato Hornworms: Hand-pick these large green caterpillars off your plants. They can defoliate a plant quickly.
Root-Knot Nematodes: These microscopic worms cause swollen knots on roots. Choose resistant (N) varieties and rotate crops or use raised beds with fresh soil.

Diseases

Early Blight & Late Blight: Remove affected leaves, improve air circulation, and water at the base. Fungicides containing chlorothalonil can be used preventatively.
Bacterial Wilt: Plants wilt and die rapidly. There is no cure. Remove and destroy the plant; do not compost it. Rotate crops and choose resistant varieties next season.
Blossom End Rot: A dark, leathery spot on the bottom of the fruit caused by calcium deficiency and irregular watering. Maintain consistent soil moisture and ensure your soil pH is correct for calcium uptake.

FAQ: Florida Tomato Planting

Can I grow tomatoes year-round in Florida?

No, the summer heat and humidity make it nearly impossible for tomatoes to produce fruit. The best harvests come from fall and spring plantings.

What is the latest I can plant tomatoes in Florida?

For a spring crop, aim to have plants in the ground by mid-March in North Florida and by early February in South Florida. For a fall crop, planting by early October is the general cutoff for most regions.

Should I start from seeds or buy transplants?

Starting from seed gives you access to a wider variety of tomatoes. However, buying healthy transplants from a local nursery is easier and ensures you get varieties suited for your area and season.

How often should I fertilize my tomato plants?

Use a balanced fertilizer at planting. Then, once the first fruits are about the size of a golf ball, switch to a fertilizer lower in nitrogen and higher in phosphorus and potassium to support fruiting. Follow label instructions carefully to avoid over-fertilizing.

Why are my tomato plants flowering but not producing fruit?

This is almost always due to high temperatures (above 90°F daytime or 75°F nighttime). Ensure you are planting in the correct season. You can also try gently shaking the flower clusters at midday to aid pollination.