Sun Gold Tomato in Zone 6B — Texas

Sun Gold tomatoes are practically candy right off the vine, and in Texas, we can get two tomato seasons out of them if we play our cards right. Their sweetness and versatility make them a must-grow for snacking, salads, and even quick sauces. Plus, there's nothing quite like the satisfaction of harvesting buckets of these golden gems from your own backyard.

Our unpredictable weather in Texas can be a challenge, with the brutal Texas heat, occasional drought, and the risk of late freezes. But with a little planning and attention to timing, you can definitely succeed with Sun Golds. Our long 230-day growing season gives you a good window to get a great harvest.

To get a jump start on your Sun Golds, start your seeds indoors from mid February through mid March. This gives you about 6 weeks to get those seedlings strong before transplanting. Use seed trays or small pots filled with a good seed-starting mix.

Keep the trays warm (around 75-80°F) and provide plenty of light. A simple shop light works great, or a sunny windowsill if you have one. A little tip: bottom watering helps prevent damping off. Just set the tray in a shallow dish of water and let the soil soak it up. Spring can bring early warmth, so be prepared to adjust your hardening-off schedule if needed.

Transplant your Sun Gold seedlings outdoors from early April through early May, after the last threat of frost has passed. Before transplanting, harden them off by gradually exposing them to outdoor conditions for about a week. Start with an hour or two of shade, then gradually increase the time and sunlight each day.

Plant them 24-36 inches apart in well-drained soil. Keep an eye on the weather forecast. We sometimes get late cold snaps in April, so be ready to cover your plants if needed.

Sun Golds need consistent moisture, especially in the Texas heat. These plants aren't drought-tolerant, and inconsistent watering can lead to cracked fruit. During the hottest part of the summer, you'll likely need to water deeply every other day, or even daily if the soil dries out quickly.

Stick your finger about 2 inches deep into the soil. If it feels dry, it's time to water. Aim for about 1-2 inches of water per week, depending on rainfall. Water at the base of the plant to avoid getting the leaves wet, which can encourage fungal diseases in our variable humidity.

Signs of underwatering include wilting leaves and slow growth. Overwatering can lead to yellowing leaves and root rot. A good layer of mulch, like shredded bark or straw, will help retain moisture and regulate soil temperature, which is crucial in our unpredictable rainfall patterns.

Sun Golds are vigorous indeterminate growers, which means they'll keep growing and producing tomatoes all season long. They need strong support to keep them off the ground and prevent them from sprawling.

A tall, sturdy cage is often the easiest option, but you can also use stakes. Install the support at planting time to avoid damaging the roots later. As the plant grows, gently weave the stems through the cage or tie them to the stake with soft twine.

If you don't prune your Sun Golds, they'll quickly take over your garden. These plants are aggressive! Regularly remove the suckers that grow between the main stem and the branches. These suckers will just steal energy from fruit production.

Focus on removing suckers from the bottom of the plant to improve air circulation and reduce the risk of disease. Towards the end of the season, around early November when frost is approaching, you can pinch off the top of the plant to encourage the remaining tomatoes to ripen.

You can expect your first Sun Gold harvest from early June through late July, depending on when you transplanted. These tomatoes are ready to pick when they turn a deep orange-gold color and feel slightly soft to the touch. They'll also practically fall off the vine when they're perfectly ripe.

Gently twist or snip the tomatoes from the vine, being careful not to damage the plant. Harvest frequently to encourage continued production. As the first frost approaches around early November, harvest any remaining green tomatoes and bring them indoors to ripen. They'll still taste great, even if they don't quite reach the same level of sweetness as vine-ripened ones.

Even though Sun Golds are delicious, they can have some common problems in Texas. Keep an eye out for cracking, over-production, and early blight.

Cracking

• What it looks like: Splits in the tomato skin, either circles around the stem or lines radiating from it.
• What causes it: Heavy watering or rain after a dry spell. The fruit absorbs water faster than the skin can expand.
• How to fix/prevent it: Water consistently, especially during dry spells. Mulch around the plants to help maintain even moisture. Harvest ripe tomatoes promptly.

Over-production

• What it looks like: So many tomatoes that the plant struggles to support them, leading to broken branches and smaller fruit.
• What causes it: Sun Golds are naturally prolific, and our long growing season encourages even more production.
• How to fix/prevent it: Provide strong support to prevent branches from breaking. Prune regularly to keep the plant manageable. Harvest frequently to encourage continued production.

Early Blight

• What it looks like: Brown spots with concentric rings (target or bullseye pattern) on lower leaves first, spreading upward. Leaves yellow and drop.
• What causes it: Fungal disease that thrives in warm, humid conditions. Spreads via soil splash onto lower leaves.
• How to fix/prevent it: Remove and destroy affected leaves. Mulch to prevent soil splash. Water at the base, not overhead. Improve air circulation through spacing and pruning. Copper fungicide slows spread. Rotate crops yearly.

Texas Specific Challenges: The hot-to-extreme heat, variable humidity, and unpredictable rainfall in Texas can exacerbate these problems. Extreme heat can stress the plants and make them more susceptible to disease. Variable humidity can create ideal conditions for fungal diseases like early blight. Unpredictable rainfall can lead to cracking. Consistent monitoring and proactive measures are key to success.

Companion planting can help your Sun Golds thrive in Texas. Basil is a great companion because it repels tomato hornworms and other pests. Carrots improve the soil and attract beneficial insects. Parsley attracts pollinators and beneficial insects. French marigolds repel nematodes and other soil pests.

Avoid planting brassicas (like cabbage and broccoli) near your tomatoes, as they can stunt their growth. Fennel inhibits the growth of many plants, including tomatoes. Corn can attract tomato hornworms.