Celebrity Tomato in Zone 8B — Southern California

Celebrity Tomato is a fantastic choice for Southern California gardens. This variety offers a reliable yield of delicious, medium-sized tomatoes perfect for slicing, salads, and sauces. Its disease resistance makes it a rewarding option even if you're new to growing tomatoes in our mild, but sometimes tricky, climate.

Our SoCal climate, with its long growing season and generally warm temperatures, is ideal for tomatoes. While we face challenges like drought and occasional heat waves, careful planning and timing can ensure a successful Celebrity Tomato harvest. With a growing season that stretches for nearly 300 days, you have plenty of opportunity to get it right.

Starting Celebrity Tomato seeds indoors gives you a head start on the season. Begin in mid-January through early February, roughly six weeks before you plan to transplant them outside. This timing takes advantage of our very-early spring.

Use seed trays or small pots filled with a seed-starting mix. Keep the soil consistently moist but not soggy; bottom watering is a great way to achieve this. Provide warmth (around 70-75°F) and plenty of light, either from a sunny window or a grow light.

Transplant your Celebrity Tomato seedlings outdoors in early to late March, after the last expected frost. Before transplanting, "harden off" your seedlings by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the sun and wind.

Space the plants 24-36 inches apart in a sunny spot with well-draining soil. Even in early March, we can have unexpected warm spells or Santa Ana winds, so be sure to protect your young plants if a heat wave is forecast.

Consistent watering is crucial for Celebrity Tomato, especially in our Southern California climate. While not drought-tolerant, consistent moisture helps with fruit production and prevents issues like blossom end rot. The key is to find the right balance, especially given our water restrictions and potential for heat waves.

During the warmer months, you'll likely need to water deeply two to three times per week. Use the "finger test" – if the top two inches of soil feel dry, it's time to water. Aim for about 1-2 inches of water per week, adjusting based on rainfall and temperature. Water at the base of the plant to avoid wetting the foliage, which can encourage fungal diseases in our low-to-moderate humidity.

Signs of underwatering include wilting leaves and dry soil. Overwatering, on the other hand, can lead to yellowing leaves and root rot. Add a layer of mulch around your tomato plants to help retain moisture and regulate soil temperature.

Celebrity Tomato is a determinate variety, meaning it grows to a certain size and then stops. While not as sprawling as indeterminate types, it still benefits from support. Medium-height cages or sturdy stakes work well.

Install the support at planting time to avoid disturbing the roots later. As the plant grows, gently guide the stems through the cage or tie them to the stake with soft twine. This will keep the fruit off the ground and prevent the plant from toppling over, especially when laden with tomatoes.

You can expect your first Celebrity Tomato harvest from early May through late June, about 70 days after transplanting. The tomatoes are ready to pick when they are a deep red color, firm to the touch, but with a slight give when gently squeezed.

To harvest, gently twist the tomato from the vine, leaving the stem attached. Regular harvesting encourages continued production. Keep an eye on the forecast as we approach early December, our typical first frost. If a frost is predicted, harvest any remaining green tomatoes and allow them to ripen indoors.

Here are three common problems you might encounter with Celebrity Tomato in Southern California:

Blossom Drop

• What it looks like: Flowers fall off the plant without setting fruit. Small fruit turns yellow and drops. The plant itself appears healthy, but there's no tomato production.
• What causes it: Temperature stress is the main culprit. In SoCal, this often happens during our early summer heat waves. Nights above 75°F or days exceeding 95°F can prevent fruit set. Low humidity and 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, especially inland. Keep plants well-watered to reduce stress. Avoid over-fertilizing with nitrogen. Gently shake the plant or use a small brush to hand-pollinate the flowers.

Hornworms

• What it looks like: Large sections of leaves are stripped overnight. You might find dark droppings on the leaves below. Look closely for large (up to 4 inches) green caterpillars with white diagonal stripes.
• What causes it: These are the larvae of hawk moths. They lay their eggs on tomato plants, and the caterpillars feed voraciously.
• How to fix/prevent it: Handpicking is the most effective method. Check your plants regularly and remove any hornworms you find. Bt (Bacillus thuringiensis) spray is an organic option that targets caterpillars. If you see a hornworm with white cocoons on its back, leave it alone – those are parasitic wasp eggs that will control the hornworm population.

Early Blight

• What it looks like: Brown spots with concentric rings (a target or bullseye pattern) appear on the lower leaves first, then spread upward. Affected leaves turn yellow and eventually drop off.
• What causes it: This is a fungal disease (Alternaria solani) that thrives in warm, humid conditions. It spreads through soil splash onto the lower leaves.
• How to fix/prevent it: Remove and destroy any affected leaves (don't compost them). Mulch around the base of the plants to prevent soil splash. Water at the base of the plant, avoiding overhead watering. Improve air circulation by spacing plants adequately and pruning if necessary. Copper fungicide can help slow the spread of the disease. Rotate your crops each year.

Southern California Specific Challenges: Our hot summers inland, combined with low-to-moderate humidity and periods of drought, can stress Celebrity Tomato plants. Consistent watering, mulching, and providing afternoon shade during the hottest periods are crucial for success. Also, fire season often coincides with peak harvest time, so be mindful of air quality and adjust your gardening activities accordingly.

Companion planting can benefit Celebrity Tomato in your Southern California garden. Basil is a classic companion, as it repels pests like tomato hornworms and whiteflies. Carrots and parsley attract beneficial insects that prey on tomato pests. French marigolds are known to deter nematodes and other soil-borne pests.

Avoid planting brassicas (like broccoli, cabbage, and kale) near your tomatoes, as they can stunt their growth. Fennel inhibits the growth of many plants, including tomatoes. Corn can also compete with tomatoes for nutrients and sunlight.