Celebrity Tomato in Zone 10B — Southern California

Celebrity Tomato is a fantastic choice for Southern California gardens. Its reliable flavor and medium size make it perfect for slicing onto sandwiches, adding to salads, or making a quick batch of sauce. Plus, its excellent disease resistance means you'll likely have a bountiful harvest, even with our sometimes unpredictable weather.

While we face challenges like drought and summer heat inland, our long 355-day growing season gives us a real advantage. By timing our planting right, we can enjoy delicious, homegrown tomatoes for months.

Starting your Celebrity Tomato seeds indoors gives them a head start against potential pests and diseases. Begin in early to late December, about six weeks before you plan to transplant them outside. This timing works well with our very-early spring character, allowing the seedlings to mature indoors during the cooler part of winter.

Use seed trays or small pots filled with seed-starting mix. Keep the soil consistently moist, but not soggy. Bottom watering is a great way to ensure even moisture without disturbing the delicate seedlings. Place the trays in a warm location with plenty of light, either from a sunny window or a grow light.

Transplant your Celebrity Tomato seedlings outdoors in late January through late February. This allows them to establish before the full force of our summer heat inland arrives. Before transplanting, harden off the seedlings by gradually exposing them to outdoor conditions for about a week.

Choose a sunny spot with well-draining soil, spacing the plants 24-36 inches apart. Be mindful of potential late cold snaps, so have frost cloth on hand to protect them if needed.

Celebrity Tomatoes need consistent moisture, especially in our Southern California climate, but they're relatively forgiving. During the cooler winter months, when we get some rain, you might only need to supplement with watering once or twice a week, giving each plant about 1-2 inches of water. As the weather warms up in spring and summer, increase watering to 2-3 times a week, providing 2-3 inches of water each time.

Use the "finger test" to check soil moisture before watering. Stick your finger about 2 inches deep into the soil; if it feels dry, it's time to water. Aim to 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, cracked soil. Overwatering can lead to yellowing leaves and root rot. A layer of mulch around the base of the plants helps retain moisture and suppress weeds, particularly important during our drier months.

Celebrity Tomatoes have a determinate growth habit, meaning they grow to a certain size and then stop, making them more manageable than indeterminate varieties. However, they still need support to keep the fruit off the ground and prevent the branches from breaking under the weight of the tomatoes. Medium-height cages work well.

Install the cages or stakes at planting time to avoid disturbing the roots later on. As the plants grow, gently guide the stems through the cage or tie them to the stakes with soft twine.

You can expect your first Celebrity Tomato harvest from early April through late May. The tomatoes are ready to pick when they are medium-large, red, and firm with a slight give when gently squeezed. Their excellent disease resistance is definitely an advantage.

To harvest, gently twist the fruit from the vine, leaving a small piece of stem attached. Regularly harvesting ripe tomatoes encourages the plant to produce more. As late December approaches and the threat of frost looms, harvest any remaining green tomatoes and bring them indoors to ripen.

Here are some common problems you might encounter with Celebrity Tomatoes in Southern California:

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 is the main culprit. Our summer heat inland can cause blossom drop if nighttime temperatures stay above 75°F or daytime temperatures 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 well-watered, but avoid over-fertilizing with nitrogen. Try hand-pollination if you suspect poor pollination.

Hornworms

• What it looks like: Large sections of leaves stripped overnight. You might also see large (up to 4 inches) green caterpillars with white diagonal stripes and dark droppings on the leaves below.
• What causes it: These are the larvae of hawk moths, which lay their eggs on tomato family plants. The caterpillars are voracious feeders and can defoliate plants quickly.
• How to fix/prevent it: Handpicking is very effective. Bt (Bacillus thuringiensis) spray is an organic option. If you see hornworms with white cocoons on their backs, leave them be! Those are parasitic wasp eggs that will control the hornworm population.

Early Blight

• What it looks like: Brown spots with concentric rings (target or bullseye pattern) appear on the lower leaves first, spreading upward. Leaves yellow and drop.
• What causes it: Early blight is a fungal disease (Alternaria solani) that thrives in warm conditions. It spreads via soil splash onto lower leaves.
• How to fix/prevent it: Remove and destroy affected leaves (don't compost them). Mulch around the base of the plants to prevent soil splash. Water at the base, not overhead. Improve air circulation by spacing plants properly and pruning. Copper fungicide can slow the spread. Rotate your crops each year.

Southern California Specific Challenges: Our hot summer heat inland can exacerbate blossom drop and early blight. Santa Ana winds can quickly dry out plants, making consistent watering crucial. During fire season, be mindful of air quality and avoid watering overhead to minimize the spread of potential contaminants.

Companion planting can give your Celebrity Tomatoes a boost in Southern California. Basil is a classic companion, improving tomato flavor and repelling pests. Carrots and parsley attract beneficial insects that prey on tomato pests. French marigolds deter nematodes and other soil pests.

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