Download Free Vegetable Growing Guide PDF

Growing Sunset's Red Horizon Tomatoes in the Vegetable Garden

Cultivating heirloom red tomatoes from seed is a gratifying process that requires meticulous attention to detail and a strategic approach to ensure a successful harvest. To begin, choose high-quality heirloom red tomato seeds such as those from True Leaf Market. Seven to nine weeks before the last frost, initiate the germination process indoors, sowing the seeds in a well-draining seed-starting mix. Maintain a warm environment with temperatures between 75-85°F for optimal germination. Adequate sunlight or grow lights are crucial during this stage to foster robust seedling development.

Once the heirloom red tomato seedlings reach around 2 inches in height and develop their first set of true leaves, it's time to prepare them for the transition outdoors. Transplant the seedlings into larger individual pots to encourage healthy root development. Gradually expose them to outdoor conditions in a process known as hardening off, gradually increasing their time outside over 7-10 days to acclimate them to sunlight, wind, and temperature fluctuations.

Before transplanting the hardened-off seedlings into the garden, ensure the site is well-prepared. Choose a sunny location with well-draining soil, preferably slightly acidic. Amend the soil with organic matter such as compost to enhance fertility and drainage. Proper spacing between plants is vital to facilitate air circulation and prevent diseases.

As the heirloom red tomato plants grow in the garden, ongoing care becomes paramount for a bountiful harvest. Pruning practices are essential for indeterminate varieties; selectively remove suckers and lower foliage to enhance air circulation and focus energy on fruit production. Stake or cage the plants to provide support and prevent sprawling. Regularly inspect for pests such as aphids or hornworms, employing organic pest control methods when necessary.

Fertilize the tomato plants regularly using a balanced, organic fertilizer to ensure they receive essential nutrients for vigorous growth. Follow recommended rates to prevent over-fertilization, which can lead to excessive foliage growth at the expense of fruit production. Water consistently, aiming to keep the soil consistently moist but not waterlogged.

To maintain the health of the heirloom red tomatoes, consider mulching around the plants to retain moisture, suppress weeds, and regulate soil temperature. Mulching also helps prevent soil-borne diseases from splashing onto the foliage during watering. Regularly monitor the plants for signs of nutrient deficiencies or diseases, addressing issues promptly to prevent widespread problems.

Harvesting Hybrid Sunset's Red Horizon Tomatoes

Harvesting tomatoes is a crucial step in ensuring the best flavor and quality. Red tomatoes are ready to be picked when they are fully ripe but still firm to the touch. Carefully grasp the ripe tomato and gently twist it away from the stem, leaving a small part of the stem attached. If you notice cracking, you can harvest them just as they begin to change color and allow them to ripen indoors. It's important to harvest tomatoes before the first frost, as they should be fully mature.

When harvesting, handle the tomatoes gently to avoid damaging the fruit. To store and preserve the harvest, keep ripe tomatoes at room temperature and use them within a few days for the best flavor. If you have an abundance of ripe tomatoes, consider canning, freezing, or making sauces and salsas to enjoy them throughout the year.

About Sunset's Red Horizon Tomato Garden Seeds

AKA: Red Horizon. An heirloom beefsteak-type tomato native to southern Russia. This is a favorite in Russia for its intense tomato flavor. Producing 4 to 6-inch fruits, this indeterminate fruits up until the first frost of autumn.

Sunset's Red Horizon was named by Gary Ibsen for Sunset Magazine in 2003 after Nik Peplenov brought the tomato to the West from Russia in 1999. It has been shown to be resistant to cracking, frost, and blossom end rot.

Indeterminate tomatoes captivate gardeners with their continuous fruit production throughout the season, providing a prolonged harvest. Their vigorous growth and abundant yields make them an appealing choice for those seeking a steady supply of fresh, flavorful tomatoes.

The fruit is meaty, almost seedless, and ranges from 200 to 500 grams. The variety is known for its dense, not very juicy flesh and excellent, balanced taste of old tomato.

It is particularly well adapted to regions with short seasons and cool summers, and it can resist light frosts. The plant is indeterminate, with regular leaf foliage and a height of approximately 6 feet. The variety is valued for its resistance and adaptability, making it a popular choice for growers in various climates.

Stories From Our Gardeners

"Pico de Gallo is one of my favorite things to make with fresh tomatoes. Dice up a few tomatoes, an onion, a jalapeno, and cilantro, and you have a delicious topping or dip!"

- Lara Wadsworth, True Leaf Market Writer

Other Resources

• Guide to Tomatoes

Sunset's Red Horizon Tomato Seeds Per Package:

• 300 mg packet - Approximately 65 Seeds
• .25 oz - Approximately 1,700 Seeds
• 1 oz - Approximately 6,800 Seeds
• 4 oz - Approximately 27,200 Seeds
• 1 lb - Approximately 108,800 Seeds

Non-GMO Sunset's Red Horizon Tomato seeds are available for Fast Free Shipping on qualifying orders.