When to Plant Tomatoes in Southern Ontario

Tomatoes are a popular vegetable to grow in Southern Ontario due to their versatility in cooking and nutritional benefits. If you are planning to grow tomatoes, it is important to know when to plant them to ensure they have the best chance of thriving in your garden.

Types of Tomatoes

Before you consider planting tomatoes, it's important to know the type of tomato you want to grow. There are two types of tomatoes: determinate and indeterminate.

Determinate tomatoes grow to a certain size and ripen all at the same time, making them great for canning or preserving. Indeterminate tomatoes, on the other hand, continue to grow and produce fruit throughout the season, making them ideal for fresh eating. Knowing your tomato type is important, as it will dictate the spacing and care required for your plants.

Timing for Planting Tomatoes

The ideal time to plant tomatoes in Southern Ontario is in late May or early June. This is when the soil has warmed up and the chance of frost has passed. It's important to plant tomatoes after the risk of frost has decreased, as frost can damage or kill the plant.

Starting your tomato seeds indoors is recommended to ensure they have ample time to grow before being transplanted outdoors. This can be done six to eight weeks before the estimated date of the final frost. Once the seedlings have reached six inches in height and have at least two sets of true leaves, they are ready to be transplanted outdoors.

Choosing a Location

Tomatoes require full sun to grow and produce fruit. Therefore, it's important to choose a location in your garden that receives at least six hours of direct sunlight per day.

Tomatoes also require well-draining soil, as they do not thrive in waterlogged conditions. Adding compost or organic matter to your soil can help with drainage and provide nutrients.

Planting and Caring for Tomatoes

When planting tomatoes, space them at least two to three feet apart, as they require room to grow and air circulation to prevent disease. It's recommended to add a layer of organic mulch around the base of the plants, as this can help retain moisture and prevent weeds.

Tomatoes require consistent watering, especially during dry periods. However, it's important not to overwater, as this can cause root rot. Watering at the base of the plant and avoiding getting water on the leaves can also help prevent disease.

Tomatoes also require regular fertilization to promote healthy growth and fruit production. Adding a balanced fertilizer or compost once a month can provide your plants with the necessary nutrients.

Harvesting Tomatoes

Tomatoes typically take 60 to 80 days to reach maturity and can be harvested when they are fully ripe, usually when their skin changes color and they feel firm to the touch. It's important to pick tomatoes regularly to promote continued growth and prevent overripening on the plant.

Overall, knowing when to plant tomatoes in Southern Ontario and how to care for them can provide you with a successful harvest. With patience and care, you can enjoy the delicious taste of homegrown tomatoes in your cooking.