Sun Gold Cherry Tomato Plants: Sweet Heat Harvest in Just 55 Days

Sun Gold cherry tomato plants turn every bite into a burst of sweet heat—and you can harvest them in just 55 days. 🌱 I planted mine last spring, and the first cluster of golden-orange tomatoes had me hooked: sun-ripened flavor you won’t find in grocery stores, plus a vine that’s shockingly productive even in small spaces.

These tomatoes thrive in full sun (6-8 hours daily) and well-draining soil with a pH of 6.0-6.8. Start seeds indoors 6-8 weeks before your last frost or buy sturdy transplants—just avoid those leggy ones from big-box stores.

A cage or trellis keeps vines contained, and regular pruning (pinch suckers) ensures energy goes to fruit, not foliage.

Water consistently at the base (avoid wetting leaves to prevent disease), and feed every 2-3 weeks with a balanced fertilizer. The first flush of fruit arrives around day 55, but with proper care, a single plant can yield 20-30 pounds of tomatoes all season.

That’s enough for snacks, salads, and sauces with zero store-bought substitutes needed.

Watch for blossom end rot (calcium deficiency) and hornworms—both are common but easy to fix with organic remedies. Even if pests strike, Sun Golds bounce back fast. By late summer, your neighbors will be asking where you got your "secret" tomatoes. Here’s how to make it happen!

What you need

Step-by-step instructions for growing Sun Gold cherry tomatoes

Here’s how to coax those sweet, golden cherry tomatoes from seed to harvest in record time.

Sun Golds thrive when planted 6-8 weeks before your last frost date. I use 4-inch biodegradable pots filled with seed-starting mix, planting 2 seeds per pot at a depth of ¼ inch. Press gently so the soil holds the seeds without burying them too deep—this ensures faster germination.

Cover the pots with a humidity dome or plastic wrap to trap warmth and moisture. Place them on a seedling heat mat set to 75-85°F—this boosts germination speed dramatically. You’ll see sprouts in 5-10 days, but don’t remove the dome until 50% of seeds have emerged. This prevents damping-off, a fungal disease that collapses seedlings overnight.

Once sprouts appear, move them under grow lights for 14-16 hours daily. A south-facing window won’t cut it—Sun Golds need intense light to stay compact. Position the lights 2-3 inches above the seedlings and raise them as plants grow. Leggy, pale stems mean your light is too far away.

Two weeks before transplanting, start hardening off. Place seedlings outside in a shaded spot for 1 hour the first day, then gradually increase time by 1 hour daily until they’re out 8+ hours. This toughens their skin and prevents shock when they hit the garden. Watch for wilting—if it happens, they’re not ready yet.

Set plants 18-24 inches apart in well-draining soil amended with compost. Sun Golds need full sun—6-8 hours daily—so choose a spot with no afternoon shade. Bury the stem slightly deeper than the pot to encourage stronger root growth. Water deeply right after planting to settle the soil.

Install cages or stakes immediately. Sun Golds produce heavy fruit, and without support, vines will flop. I use 5-foot tomato cages for each plant—this keeps the harvestable fruit off the ground and prevents disease. Mulch with straw to retain moisture and suppress weeds, which compete for nutrients.

Water at the base 1-2 inches deep every 2-3 days, adjusting for heat. Let the top inch of soil dry between waterings—consistent moisture prevents blossom-end rot. Avoid wetting leaves, especially in the morning, to reduce fungal risks like early blight.

Feed every 2 weeks with a balanced fertilizer (10-10-10) until fruit sets, then switch to a high-phosphorus formula (5-10-10) to boost flowering and fruiting. You’ll know it’s working when vines burst with yellow-orange clusters—Sun Golds produce 50-100 tomatoes per plant when happy.

✂️ Step 5: Prune and Harvest for Continuous Production

Pinch off suckers—the little shoots that grow between the main stem and branches—to direct energy into fruit. Prune leaves touching the soil to improve airflow and reduce disease. When clusters turn golden and plump, harvest every 2-3 days—this encourages more blooms.

Sun Golds ripen in 55 days from transplant**, but don’t wait for full color to pick. They’re sweetest when ¾ ripe and still slightly firm. Store in the fridge for up to 1 week, or eat fresh—their honey-sweet flavor is unmatched. Keep harvesting until frost kills the plants, then save seeds for next year!