Cherry Tomatoes Supersweet 100 Recipe: Cold-Hardy Perennial With Bold Flavor Revival

Growing Supersweet 100 cherry tomatoes means biting into sunburst-flavored jewels that outshine store-bought varieties by a mile. 🌱 This cold-hardy perennial thrives where most tomatoes fail, producing year after year with minimal fuss—if you know the right tricks.

I’ve grown them through three winters in Zone 5, and the secret isn’t just the variety but how you treat it from day one.

The key starts with well-draining soil (amend with compost) and full sun (6+ hours daily), but the real magic happens in how you prune and support them. Unlike annuals, these plants reward patience with prolonged harvests—think clusters of sweet, 1-inch tomatoes from late spring to first frost.

Trellising isn’t optional; it’s how you prevent disease and maximize sun exposure for those signature flavors.

By midseason, you’ll be snipping pint-sized tomatoes so sweet they’ll make your neighbors ask for cuttings. The plants handle light frosts better than most, and with proper winter mulch, they’ll bounce back stronger each year. No greenhouses or heat lamps needed—just smart cultivation and a little luck with timing.

Perfect for small spaces, containers, or traditional beds, these tomatoes prove you don’t need a greenhouse to grow gourmet produce. Let’s dive into the steps that turn good soil into a year-round harvest of sun-kissed flavor.

What you need

Step-by-step instructions for growing Supersweet 100 cherry tomatoes

Here's the method I swear by for producing those sweet, cold-hardy tomatoes year after year.

Supersweet 100s thrive in full sun with at least 8 hours of direct sunlight daily. I always pick the warmest spot in my garden—these tomatoes reward heat with extra sweetness. If you're growing in containers, select pots that are at least 12 inches deep with drainage holes to prevent root rot.

Before planting, amend the soil with 2-3 inches of compost mixed into the top 12 inches of soil. Supersweet 100s love fertile, well-draining soil with a slightly acidic pH between 6.0 and 6.8. You'll know the soil is ready when it crumbles easily between your fingers and holds moisture without becoming soggy.

Wait until the soil temperature reaches at least 60°F before planting—cold soil slows germination and weakens seedlings. I always plant mine after the last frost date in my zone, typically in early May. Dig holes that are just as deep as the root ball and about 18 inches apart to give each plant room to sprawl.

Gently remove the plant from its container and loosen the roots if they're circling. Place it in the hole, ensuring the top of the root ball sits just below soil level. Backfill with soil, pressing lightly to eliminate air pockets. Water deeply right after planting to settle the soil and encourage root growth.

Supersweet 100s need 1-1.5 inches of water per week, but consistency is key—fluctuating moisture leads to blossom-end rot. I water deeply in the morning, aiming for the soil rather than the leaves to prevent disease. You'll know the watering is right when the top 2 inches of soil feel moist but not saturated.

Apply a 3-inch layer of mulch around each plant, keeping it 2 inches away from the stem to prevent rot. I use straw because it breaks down slowly and retains moisture while suppressing weeds. Mulching also keeps soil temperatures stable, which is crucial for these cold-hardy varieties.

Pinch off the first few flowers that appear to encourage stronger vine growth. Once the plant reaches 18-24 inches tall, prune suckers—the small shoots that grow in the leaf axils—to focus energy on fruit production. I also remove any yellow or diseased leaves immediately to keep the plant healthy.

Install a sturdy trellis or cage at planting time to support the vines as they grow. Supersweet 100s can get heavy with fruit, so I tie the main stem to the support with soft plant ties every 12 inches. Pruning and supporting the plant ensures better air circulation and easier harvesting.

Start harvesting when the tomatoes reach their full color and are slightly soft to the touch. I pick them every 2-3 days to encourage more production. Supersweet 100s are cold-hardy, but a light frost will damage the plants, so I bring potted varieties indoors or cover outdoor plants with frost cloth before the first frost.

To extend the season, I often harvest green tomatoes in late fall, let them ripen indoors, and enjoy them well into winter. You'll know they're ready to ripen indoors when they're fully colored and slightly firm. Store them in a cool, dark place until they soften and turn red.

Tips & tricks for growing Supersweet 100 cherry tomatoes

These simple strategies will help you grow the sweetest, most productive cherry tomatoes you've ever tasted—without the common pitfalls.

Sunlight Optimization: While the instructions call for at least 8 hours of direct sunlight, I've found that positioning your plants to capture morning sun (when it's less intense) and afternoon shade in hot climates actually increases sweetness. Use reflective surfaces like white walls or mulch to bounce extra light onto the plants during cloudy days. The goal is consistent, bright light—not scorching midday rays that can stress the plants.

Soil Temperature Secret: The 60°F soil temperature threshold is critical, but don't wait until the last possible moment to plant. I test soil temperature with a simple thermometer for 3 consecutive days before planting—this gives roots time to establish before summer heat arrives. For container growers, use black pots to absorb and retain heat more effectively, especially in cooler spring conditions.

Watering Technique: The 1-1.5 inches of water per week guideline works, but timing matters just as much. I water deeply in the morning using a soaker hose or drip irrigation system to deliver water at the soil level. This prevents fungal diseases that thrive in damp foliage. A moisture meter is worth the investment—it helps you monitor that top 2 inches of soil consistently without guesswork.

Pruning Strategy: When pruning suckers (those little shoots in the leaf axils), I use sharp scissors to make clean cuts just above the leaf where the sucker emerges. This prevents tearing and reduces stress on the plant. I also save the pruned suckers—if they're at least 6 inches long, I can root them in water for new plants! This gives you free additional plants while keeping your main harvest focused on fruit production.

Frequently asked questions

How cold can Supersweet 100 tomatoes tolerate before planting?

Supersweet 100 is a cold-hardy perennial (yes, really!) that can survive light frosts down to 15°F (-9°C). However, for best growth, wait until soil temps hit 50°F (10°C) before planting outdoors. If you’re in a short-season zone, start seeds indoors 6–8 weeks before last frost for a head start.

How long does it take for Supersweet 100 to produce fruit?

Expect the first tiny cherry tomatoes in 50–60 days from transplanting (or 70–80 days from seed). Since this variety is a perennial in warm climates, it may produce fruit year-round with proper care—though yields peak in spring and fall. Patience pays off with bold, sweet flavor!

Can I grow Supersweet 100 in containers, or does it need a garden bed?

This compact variety thrives in containers 5+ gallons with good drainage. Use a well-draining potting mix and place pots in full sun (6+ hours/day). For bigger yields, a raised bed or garden plot works too—just ensure 18–24 inches of spacing between plants.

Why are my Supersweet 100 tomatoes cracking or turning white?

Cracking? Inconsistent watering (too much/too little) is the culprit. Keep soil evenly moist but not soggy. White or blossom-end rot? It’s a calcium deficiency—add crushed eggshells or calcium supplement to the soil. Prune lower leaves to improve airflow and reduce humidity-related issues.