When to Plant Tomatoes Outside in Wisconsin

Tomatoes are a popular vegetable to grow in Wisconsin. The warm summers provide an ideal environment for the plants to thrive, but planting them too early can result in stunted growth and poor fruit quality. Here are some tips on when to plant tomatoes outside in Wisconsin:

Choose the Right Variety

The first step in planting tomatoes in Wisconsin is choosing the right variety. Some varieties are better suited to the cooler climate and short growing season of Wisconsin, such as Early Girl, Celebrity, and Glacier. These varieties produce earlier and have a shorter growing cycle, making them ideal for Wisconsin gardeners.

Timing is Key

Wisconsin weather can be unpredictable, with frost often occurring well into May. It's important to wait until the danger of frost has passed before planting tomatoes outside. The recommended planting time for tomatoes in Wisconsin is between May 15 and June 5, depending on your location within the state.

It's also important to ensure that the soil temperature is warm enough for planting. The soil should be at least 50 degrees Fahrenheit for planting tomatoes. You can use a soil thermometer to check the temperature of the soil.

Preparing the Site

Before planting tomatoes, it's important to prepare the site. Choose a sunny location with well-draining soil. Tomatoes require plenty of sunlight and adequate drainage to grow and produce fruit. Amend the soil with compost or aged manure to improve soil fertility and texture.

Space the tomato plants at least two feet apart and provide support for the plants. You can use stakes, cages, or trellises to support the plants as they grow.

Caring for Tomato Plants

Tomatoes require regular watering and fertilization throughout the growing season. Water the plants deeply once or twice a week, depending on weather conditions. Avoid getting the leaves wet, as this can lead to disease. Fertilize the plants every four to six weeks with a balanced fertilizer.

Tomatoes also require regular pruning to promote growth and fruit production. Pinch off the suckers (the small shoots that emerge from the base of each leaf) to help focus the plant's energy on producing fruit.

Harvesting Tomatoes

Tomatoes are typically ready for harvest 70 to 80 days after planting. The fruit should be firm and fully colored, with a slight give when gently squeezed. Harvest the tomatoes when they are ripe, as leaving them on the plant for too long can result in overripe or rotting fruit.

In conclusion, planting tomatoes in Wisconsin requires careful timing and preparation. Choose the right variety, wait until the danger of frost has passed, prepare the site, and provide regular care for the plants throughout the growing season. With proper care and attention, you can enjoy a bountiful harvest of fresh, delicious tomatoes from your Wisconsin garden.