Sun Gold Tomato in Zone 8B — Texas

Sun Gold tomatoes are practically candy, and in Texas, we can get two tomato seasons out of them if we time it right. Their super-sweet flavor and manageable size make them perfect for snacking straight from the vine, adding to salads, or even grilling. Plus, who doesn't love showing off a huge harvest of these golden gems?

Sure, the Texas heat and unpredictable weather can throw curveballs, but with a little planning, you can enjoy a bumper crop of Sun Golds. Our long growing season, stretching about 273 days, gives us a good head start.

To get a jump on our first tomato season, start your Sun Gold tomato seeds indoors from late January through mid February. This gives them about six weeks to get a strong start before transplanting. Use seed trays or small pots filled with a good seed-starting mix.

Keep the trays warm – a heat mat helps – and provide plenty of light. A simple shop light works, or a sunny windowsill if you have one. Water from the bottom by placing the tray in a shallow dish of water until the soil surface is moist. This prevents damping off, a common problem when starting seeds.

Remember that Texas springs can bring a warm spell, so keep an eye on the weather and be ready to protect your seedlings if a late freeze threatens.

Transplant your Sun Gold tomato seedlings outdoors from mid March through early April, once the danger 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, increasing the time and sun exposure each day.

Plant them 24-36 inches apart in well-drained soil amended with compost. In Texas, we know that even after the last frost date, we can still get some unpredictable weather, so keep an eye on the forecast and be ready to cover your young plants if needed.

Sun Gold tomatoes need consistent watering, especially in the Texas heat. These plants aren't drought-tolerant, and irregular watering can cause the fruits to crack.

During the hot summer months, you'll likely need to water deeply two to three times a week, providing about 1-2 inches of water each time. Stick your finger about two inches deep into the soil – if it feels dry, it's time to water. In spring and fall, you can usually reduce watering to once or twice a week, depending on rainfall.

Water at the base of the plant to avoid wetting the foliage, which can encourage fungal diseases, especially with our variable humidity. Signs of underwatering include wilting leaves and dry soil. Overwatering can lead to yellowing leaves and root rot. Mulching around the base of the plant helps retain moisture and keeps the soil temperature more even, which is crucial in our climate.

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

Tall cages or sturdy stakes work best. Install the support at planting time to avoid disturbing the roots later. As the plant grows, gently tie the stems to the support with soft twine or plant ties. This will help keep the plant upright and prevent the branches from breaking under the weight of the fruit.

Sun Gold tomatoes are known for their sprawling growth habit, so pruning is essential to keep them manageable and productive. The main goal is to remove suckers, which are the small shoots that grow in the "V" between the main stem and the branches.

Pinch off these suckers as soon as you see them. This directs the plant's energy into fruit production rather than vegetative growth. Also, remove any yellowing or diseased leaves, especially near the bottom of the plant. As the end of the season approaches around late November, you can top the plant to encourage the remaining fruit to ripen before the first frost.

You can expect your first harvest of Sun Gold tomatoes from early May through late June, about 57 days after transplanting. The tomatoes are ripe when they turn a deep orange-gold color and are slightly soft to the touch. They should also have an intensely sweet aroma.

Gently twist or snip the tomatoes from the vine, being careful not to damage the plant. Sun Golds are known to drop from the vine when they are very ripe. To encourage continued production, harvest regularly as the fruits ripen. As the first frost approaches in late November, harvest any remaining green tomatoes and bring them indoors to ripen. They'll still taste great, even if they don't quite match the sweetness of vine-ripened ones.

Here are three common problems you might encounter with Sun Gold tomatoes in Texas:

Cracking

• What it looks like: Splits in the tomato skin, either concentric circles around the stem or radial lines radiating from the stem.
• What causes it: Inconsistent watering, especially 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 to avoid the dry/wet cycle. Mulch to maintain even moisture. Harvest promptly when ripe.

Over-production

• What it looks like: A huge amount of tomatoes all ripening at once.
• What causes it: Sun Golds are just prolific!
• How to fix/prevent it: Succession planting (planting new plants every few weeks) can help spread out the harvest. Give away extras to friends and neighbors!

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 (Alternaria solani) that thrives in warm, humid conditions. Spreads via soil splash onto lower leaves.
• How to fix/prevent it: Remove and destroy affected leaves (don't compost). 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 Texas heat can stress tomato plants, making them more susceptible to diseases and pests. Variable humidity can also contribute to fungal problems like early blight. Unpredictable rainfall can lead to inconsistent watering, which causes fruit cracking. Fire ants can also be a nuisance, so be sure to treat your garden regularly.

Companion planting can help your Sun Gold tomatoes thrive in Texas. Basil is a great companion because it repels tomato hornworms and other pests, plus it improves the flavor of the tomatoes. Carrots and parsley attract beneficial insects that prey on pests. French marigolds deter nematodes and other soil pests.

Avoid planting brassicas (like cabbage and broccoli) near tomatoes, as they can stunt their growth. Fennel inhibits the growth of many plants, including tomatoes, so keep it far away. Corn competes with tomatoes for nutrients and water, so they shouldn't be planted near each other.