When to Plant Tomatoes in Ontario, Canada

Tomatoes are a popular and versatile vegetable, and they are easy to grow in many different climates. In Ontario, Canada, the growing season for tomatoes usually starts in May or early June, and the plants can produce fruit until October, depending on the weather.

When deciding when to plant your tomatoes in Ontario, there are a few factors to consider. Here are some things to keep in mind:

Climate

Ontario has a varied climate, with hot summers and cold winters. The best time to plant tomatoes in Ontario is after the last frost of the season. This typically happens in late May or early June in most parts of the province, but check with your local gardening center or agricultural extension office for specific dates in your area.

Soil Temperature

Tomatoes thrive in warm soil, so you should wait until the soil temperature reaches at least 55°F (13°C) before planting your tomatoes. You can use a soil thermometer to check the temperature of the ground before planting. If the soil is too cool, the plants may not grow properly or produce fruit.

Seedlings vs. Seeds

There are pros and cons to starting your tomato plants from seed or buying seedlings. If you start your plants from seed, you have more control over the growing process and can choose the varieties you want. However, it can be more time-consuming and requires more knowledge and skill than buying seedlings. If you buy seedlings, they are already established and ready to plant, but you may not have as much variety to choose from.

Tomato Varieties

There are many different tomato varieties to choose from when planting in Ontario. Some popular varieties include:

Cherry Tomatoes

Roma Tomatoes

Beefsteak Tomatoes

Heirloom Tomatoes

When choosing which tomatoes to grow, consider your personal taste preferences as well as the growing conditions in your area.

Planting Tips

Once you have decided when and what to plant, here are some tips to keep in mind for successful tomato growing:

Choose a sunny location with well-draining soil

Space your plants about 2-3 feet apart

Water your plants regularly, but avoid getting the leaves wet to prevent disease

Fertilize your plants every 4-6 weeks with a balanced fertilizer

Prune your plants as they grow to encourage fruit production

Harvest your tomatoes when they are fully colored and have a slight give when squeezed gently

By following these tips and monitoring your plants carefully, you can enjoy a bountiful harvest of delicious, home-grown tomatoes in Ontario.