Celebrity Tomato in Zone 7B — Northern California

Celebrity Tomato is a fantastic choice for Northern California gardeners because it's reliable, produces delicious, medium-sized fruits perfect for slicing, and offers excellent disease resistance. Our long growing season and mild winters mean you can often squeeze in a late crop too! The flavor is classic tomato – a good balance of sweetness and acidity that shines in everything from salads to sauces.

While we face challenges like drought and increasingly hot summers, Celebrity's relatively short maturity time and disease resistance give you a head start. With a 245-day growing season, you've got plenty of time to get a great harvest, even with some unpredictable weather. Careful planning and water-wise practices are key to success in our Mediterranean climate.

Starting Celebrity Tomato seeds indoors from early February through early March gives them a strong head start. This timing allows you to get plants ready to transplant as soon as the weather warms up in late March. You have about a 3-week window to get this done.

Use seed trays or small pots filled with a good seed-starting mix. Provide warmth with a heat mat and plenty of light with a grow light. Be sure to water from the bottom by setting the tray in a shallow dish of water until the soil surface looks moist.

Northern California's early spring can be tricky, with temperature swings. Starting indoors ensures consistent conditions for germination and seedling growth before the weather stabilizes.

Transplant your Celebrity Tomato seedlings outdoors from late March through late 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 and increase the time each day.

Space plants 24-36 inches apart in a sunny spot with well-drained soil. Keep an eye on the weather forecast; unexpected late frosts can still occur in some of our microclimates. Be ready to cover your young plants if temperatures dip unexpectedly.

Watering is crucial for Celebrity Tomato, especially during our dry summers. While it has good disease resistance, it is not drought-tolerant. Consistent moisture is key for fruit development.

During the warmer months (June-August), plan to water deeply 2-3 times per week, providing about 1-2 inches of water each time. Use the "finger test" – stick your finger about 2 inches into the soil. If it feels dry, it's time to water. In cooler spring and fall weather, you can reduce watering to once a week or less, depending on rainfall.

Water at the base of the plant to avoid wetting the foliage, which can encourage fungal diseases, even with Celebrity's resistance. Signs of underwatering include wilting leaves and slow growth. 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, which is especially useful during our dry spells.

Celebrity Tomato is a determinate variety, but they can still get fairly large. Providing support is important to keep the fruit off the ground and prevent the plant from sprawling.

Medium-height cages work well for Celebrity tomatoes. Install the cages at planting time to avoid disturbing the roots later. As the plant grows, gently guide the stems inside the cage to provide support.

You can expect your first Celebrity Tomato harvest from early June through late July, about 70 days after transplanting. The fruits are ready to pick when they are medium-large, fully red, and firm but with a slight give when gently squeezed.

Gently twist or cut the fruit from the vine, being careful not to damage the plant. Regular harvesting encourages continuous production throughout the season. As our first frost approaches around mid- November, harvest any remaining green tomatoes and bring them indoors to ripen. They'll ripen best in a single layer, out of direct sunlight.

Here are some common problems you might encounter with Celebrity Tomato in Northern California:

Blossom Drop

• What it looks like: Flowers fall off the plant without setting fruit. Small fruit yellows and drops prematurely. The plant looks otherwise healthy.
• What causes it: Temperature stress. In Northern California, our daytime temperatures can spike quickly in early summer, or our nights can stay too warm. Low humidity, excess nitrogen, or poor pollination can also contribute.
• How to fix/prevent it: Be patient – fruit set often resumes when temperatures moderate. Provide afternoon shade during heat waves. Keep plants well-watered, but avoid over-fertilizing with nitrogen. Gently shake the plant to encourage pollination.

Hornworms

• What it looks like: Large sections of leaves are stripped overnight. You might find large (up to 4 inches) green caterpillars with white diagonal stripes. Also look for dark droppings on the leaves below.
• What causes it: These are the larvae of hawk moths. They lay eggs on tomato plants, and the caterpillars feed voraciously.
• How to fix/prevent it: Handpick the hornworms (they blend in well, so look carefully!). Bt (Bacillus thuringiensis) spray is effective and organic. If you see hornworms with white cocoons on their backs, leave them – they're being parasitized by beneficial wasps.

Early Blight

• What it looks like: Brown spots with concentric rings (a target or bullseye pattern) appear on the lower leaves first and spread upward. Affected leaves will yellow and eventually drop off.
• What causes it: This is a fungal disease (Alternaria solani) that thrives in warm, humid conditions. It spreads via soil splash onto the 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 of the plant, not overhead. Improve air circulation by spacing plants appropriately and pruning. Copper fungicide can slow the spread of the disease. Rotate crops each year.

Northern California Specific Challenges: Our moderate-to-hot, dry summers and low humidity can stress tomato plants, making them more susceptible to blossom drop and early blight. Water restrictions can also make it challenging to provide consistent moisture. Choosing disease-resistant varieties like Celebrity and implementing water-wise gardening practices are essential for success in our region.

Companion planting can help your Celebrity Tomato thrive! Basil is a classic companion because it repels tomato hornworms and other pests. Carrots improve the soil and deter nematodes. Parsley attracts beneficial insects like hoverflies, which prey on aphids. French marigolds repel nematodes and other soil pests.

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