Celebrity Tomato in Zone 7A — Desert Southwest

Celebrity Tomato is a winner for Desert Southwest gardeners because of its reliable flavor, versatility in the kitchen, and satisfying yields. This tomato is known for its adaptability, making it a great choice to grow in our region's unique conditions. Imagine enjoying fresh slices on sandwiches, adding them to your favorite salsas, or roasting them for a burst of flavor in your winter stews.

Our extreme heat and alkaline soil can be tough on tomatoes, but with careful timing and a few tricks, you can absolutely succeed with Celebrity. The 230-day growing season in our Zone 7A gives you a nice window to get these tomatoes from seed to table.

Starting your Celebrity Tomato seeds indoors is the way to go in our Desert Southwest climate. You'll want to aim for starting your seeds indoors from mid-February through mid-March. This gives you about 6 weeks to get them ready for transplanting after the last frost.

Use seed trays or small pots with a good seed-starting mix. Keep the soil consistently moist, and bottom watering helps prevent damping-off. A heat mat can speed up germination, and once the seedlings emerge, provide plenty of light with a grow light or a sunny windowsill that gets lots of bright, indirect light. Remember, our spring can bring early warmth followed by cooler spells, so keep an eye on the forecast.

Transplanting your Celebrity Tomato seedlings outdoors should happen from early April through early May. Before you move them permanently, harden them off by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the intense Desert Southwest sunlight and temperature swings.

Plant your seedlings 24-36 inches apart in well-amended soil. Choose a spot that gets full sun. Even in April and May, we can have surprise temperature dips, so be ready to cover your young plants if a late frost threatens.

Consistent moisture is key to getting a good harvest from your Celebrity Tomatoes here in the Desert Southwest. Our extreme heat and arid climate demand a strategic watering approach. While Celebrity has good disease resistance, it still needs consistent watering to thrive.

During the spring, when the plants are establishing, aim for about 1-1.5 inches of water per week. Once the summer heat arrives, bump that up to 2-2.5 inches per week. The finger test is your friend: stick your finger about 2 inches deep into the soil. If it feels dry, it's time to water. With our monsoon season, you may need to cut back on watering during periods of heavy rainfall. Water at the base of the plant to avoid wetting the foliage, which can encourage fungal issues.

Keep a close eye on your plants. If the leaves are wilting even in the evening, they're likely underwatered. Yellowing leaves, on the other hand, can indicate overwatering. Mulching around your plants with organic matter like straw or wood chips helps retain moisture and regulate soil temperature.

Celebrity Tomatoes are determinate, but they still benefit from good support. These are semi-determinate, meaning they don't get as tall as indeterminate varieties, but medium-height cages work great.

Install cages or stakes at planting time to avoid disturbing the roots later. Cages are generally easier since you just place them around the plant. As the plant grows, gently guide the branches to stay within the cage or tie them loosely to the stake. This prevents the fruit-laden branches from breaking and keeps the tomatoes off the ground.

You can expect your first Celebrity Tomato harvest from mid-June through early August here in our Zone 7A Desert Southwest gardens. These tomatoes mature in about 70 days.

Look for medium-large, fully red fruit that are firm but have a slight give when gently squeezed. To harvest, simply twist the tomato gently until it separates from the vine. Regular harvesting encourages the plant to keep producing. As we approach the first frost in early November, harvest any remaining green tomatoes and bring them indoors to ripen.

Here are three common problems you might encounter with Celebrity Tomatoes in our Desert Southwest gardens:

Blossom Drop

• What it looks like: Flowers fall off without setting fruit. Small fruit yellows and drops. The plant looks healthy but produces no fruit.
• What causes it: Temperature stress, especially when nights stay above 75°F or days exceed 95°F. Low humidity, excess nitrogen, or poor pollination can also contribute.
• How to fix/prevent it: Be patient – fruit set usually resumes when temperatures moderate. Provide afternoon shade during extreme heat. Keep plants consistently well-watered. Avoid over-fertilizing with nitrogen. Try hand-pollinating by gently shaking the flowers.

Hornworms

• What it looks like: Large sections of leaves stripped overnight. You might spot large (up to 4 inches) green caterpillars with white diagonal stripes. Look for dark droppings on the leaves below.
• What causes it: These are the larvae of hawk moths. They lay their eggs on plants in the tomato family. The caterpillars feed voraciously and can defoliate plants quickly.
• How to fix/prevent it: Handpick the hornworms (they don't bite!). Bt (Bacillus thuringiensis) spray is effective and organic. If you see white cocoons on a hornworm, leave it alone – those are parasitic wasp eggs that will kill the hornworm and produce more beneficial wasps.

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: A fungal disease (Alternaria solani) that thrives in warm, humid conditions. It spreads via soil splash onto lower leaves.
• How to fix/prevent it: Remove and destroy affected leaves (don't compost them). Mulch to prevent soil splash. Water at the base of the plant, not overhead. Improve air circulation through spacing and pruning. Copper fungicide can slow the spread. Rotate crops yearly.

Desert Southwest Specific Challenges: Our extreme heat can exacerbate blossom drop and make plants more susceptible to sunscald. Arid humidity can also stress plants, and monsoon moisture, while welcome, can create conditions favorable to fungal diseases like early blight. Consistent watering and good air circulation are your best defenses.

Companion planting can give your Celebrity Tomatoes a boost in our challenging Desert Southwest environment. Basil is a great companion because it repels tomato hornworms and other pests, plus it improves the flavor of your tomatoes. Carrots can help loosen the soil and their presence may deter some soil pests. Parsley attracts beneficial insects that prey on tomato pests. French marigolds deter nematodes and other soil pests.

Avoid planting brassicas (like cabbage, broccoli, and cauliflower) near your tomatoes, as they can stunt tomato growth. Fennel inhibits the growth of many plants, including tomatoes. Corn can attract tomato pests like the corn earworm, which can also damage your tomatoes.