Canning with tomatoes is a fantastic way to preserve the fresh taste of summer tomatoes all year round. Whether you have a backyard garden overflowing with tomatoes or you pick them up from a local farmers’ market, learning how to can tomatoes can save you money and provide delicious meals throughout the year.
In this article, we’ll explore why tomatoes are excellent for canning, the best varieties for canning, how to grow your own tomatoes, and the step-by-step process of canning them.
Why Can Tomatoes?
Tomatoes are one of the most popular vegetables (technically fruits) to can for several good reasons. First, canning allows you to enjoy tomatoes long after the growing season has ended, ensuring a steady supply of this versatile ingredient year-round.
Nutritionally, tomatoes are rich in vitamins A and C, potassium, and antioxidants, particularly lycopene, which is beneficial for heart health. The versatility of canned tomatoes is another major benefit, as they can be used in a variety of recipes, including soups, stews, and sauces.
Finally, growing your own tomatoes and canning them is cost-effective, saving money compared to purchasing canned tomatoes from the store. You can start directly from the seed and move through the entire process for a fraction of the cost!
Best Tomato Varieties for Canning
Not all tomatoes are created equal when it comes to canning. Some varieties are better suited for this purpose due to their meaty texture, fewer seeds, and lower water content. Here are some of the best tomato varieties for canning:
- Roma: Also known as plum tomatoes, Romas are the gold standard for canning. They have thick flesh and fewer seeds, making them ideal for sauces and pastes.
- San Marzano: This Italian variety is prized for its rich flavor and low acidity, perfect for making tomato sauce.
- Cherokee Purple: This heirloom variety is known for its deep, rich flavor and vibrant color. Cherokee Purple tomatoes are slightly sweet with a hint of smokiness, which adds depth to canned sauces and stews.
- Red Cherry: While typically used fresh in salads, Red Cherry tomatoes are also excellent for canning. Their small size and sweet, juicy flavor make them ideal for canning whole or in salsas. They add a burst of flavor to any canned tomato mix.
- Aunt Ruby’s Green: This green heirloom tomato offers a unique, slightly tangy flavor that stands out in canned goods. Aunt Ruby’s Green tomatoes are large and meaty, with a firm texture that holds up well during the canning process. Their distinctive color can also add an interesting visual element to your canned tomatoes.
How to Grow Tomatoes
Growing your own tomatoes can be rewarding and provides the freshest produce for canning. Here’s a simple guide to get you started:
Choosing the Right Location
Tomatoes need full sun to produce abundant, healthy fruit. It’s essential to choose a spot in your garden that gets at least 6-8 hours of direct sunlight each day. Ample sunlight ensures that the plants can photosynthesize effectively, leading to robust growth and high yields. Avoid planting tomatoes in shaded areas, as insufficient light can lead to weak plants and poor fruit production.
Preparing the Soil
Tomatoes thrive in well-drained soil that is rich in organic matter. Preparing your soil properly is crucial for healthy plant development. Begin by adding compost or aged manure to the soil to improve its fertility and structure. This organic matter will provide essential nutrients and enhance soil aeration, ensuring that tomato roots can grow strong and deep. Additionally, test the soil pH to ensure it falls between 6.0 and 6.8, which is optimal for tomatoes.
Planting
Starting your tomatoes from high quality seeds indoors 6-8 weeks before the last frost date allows the plants to develop strong roots before being transplanted outside. Once the danger of frost has passed, plant your tomatoes outdoors, spacing them 18-24 inches apart. Proper spacing is vital to ensure good air circulation around the plants, which helps prevent diseases. Dig holes deep enough to cover the roots and part of the stem, as tomatoes can develop additional roots along the buried stem, leading to a sturdier plant.
Watering
Consistent moisture is key to healthy tomato plants, but it’s crucial to avoid waterlogging the soil. Water your tomatoes at the base of the plant to keep the leaves dry, as wet foliage can lead to fungal diseases. Aim to keep the soil consistently moist but not soggy. Deep watering is recommended to encourage the roots to grow deeper into the soil, making the plants more resilient during dry periods. Mulching around the base of the plants can help retain soil moisture and reduce the need for frequent watering.
Feeding
To promote healthy growth, use a balanced fertilizer throughout the growing season. Tomato plants also benefit from additional calcium, which helps prevent blossom-end rot, a common issue where the bottom of the fruit develops a sunken, rotten spot. You can provide calcium by adding crushed eggshells or a commercial calcium supplement to the soil. Regular feeding with a tomato-specific fertilizer will ensure that your plants receive the necessary nutrients for vigorous growth and bountiful fruit production.
Staking and Pruning
Supporting your tomato plants with stakes or cages is essential to keep them upright and prevent the fruit from touching the ground, which can lead to rot and pest issues. As the plants grow, prune the lower leaves and any suckers – small shoots that develop between the main stem and a branch. Pruning improves air circulation around the plants, reducing the risk of diseases and helping the plants focus their energy on producing fruit rather than excessive foliage.
Pest and Disease Control
Tomato plants are susceptible to various pests and diseases, so regular monitoring is important. Common pests include aphids and tomato hornworms, which can damage leaves and fruit. Use organic pest control methods, such as insecticidal soap or neem oil, to manage infestations. Crop rotation is also vital to prevent soil-borne diseases from building up in the soil. Avoid planting tomatoes in the same spot each year, and instead, rotate them with other crops like beans or lettuce to keep the soil healthy.
By following these guidelines, you can ensure that your tomato plants grow strong and healthy, providing you with a bountiful harvest of delicious tomatoes for canning and other culinary uses.
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Tomato Canning Process
Once your tomatoes are grown and harvested, it’s time to can them! Here is a step-by-step guide to the canning process:
- Preparing Your Tomatoes:
- Wash your tomatoes thoroughly.
- Blanch them in boiling water for 30-60 seconds, then plunge them into ice water. This makes the skins easy to remove.
- Peel the tomatoes and remove the cores.
- Preparing Your Jars:
- Sterilize your canning jars and lids by boiling them in water for 10 minutes.
- Keep the jars hot until you are ready to use them to prevent them from cracking when filled with hot tomatoes.
- Filling the Jars:
- Cut your tomatoes into halves or quarters, depending on their size.
- Pack the tomatoes tightly into the jars, leaving about 1/2 inch of headspace at the top.
- Add 1 tablespoon of lemon juice per pint (or 2 tablespoons per quart) to ensure safe acidity levels.
- If desired, add 1 teaspoon of salt per quart for flavor (optional).
- Processing the Jars:
- Place the filled jars in a water bath canner. Start with room temperature water, and ensure the jars are covered by at least 1 inch of water.
- Process pints for 35 minutes and quarts for 45 minutes, adjusting for altitude if necessary.
- Remove the jars and let them cool undisturbed for 12-24 hours. You should hear a popping sound as the jars seal.
- Checking the Seals:
- After the jars have cooled, check the seals by pressing the center of the lids. If the lid doesn’t pop back, the jar is sealed properly.
- Store sealed jars in a cool, dark place. Unsealed jars should be refrigerated and used within a few days.
Canning with tomatoes is a rewarding process that lets you enjoy the taste of fresh tomatoes all year round. By choosing the right tomato varieties, growing your own plants, and following the proper canning process, you can ensure a bountiful supply of delicious canned tomatoes.
Whether you’re making sauces, soups, or stews, canned tomatoes are a versatile ingredient that can elevate your cooking. So, roll up your sleeves, grab some tomatoes, and start canning today!
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