Early Girl Tomato in Zone 9A — Desert Southwest

Early Girl Tomato is a winner in our Desert Southwest gardens. It delivers that classic tomato flavor early in the season, letting you enjoy fresh-off-the-vine goodness while other varieties are still thinking about it. Plus, it's incredibly versatile, perfect for everything from simple salads to sauces.

Our extreme heat and intense sun can be tough on tomatoes, but Early Girl's early maturity means you'll get a good harvest before the worst of the summer hits. With our long 298-day growing season, you can often squeeze in a second crop in the fall, too.

Starting Early Girl Tomato seeds indoors gives them a head start in our very-early spring. Aim to sow your seeds from mid January through early February—about six weeks before you plan to transplant them outdoors. You have about a 3-week window to get them started.

Use seed trays or small pots filled with a good seed-starting mix. Keep them warm (around 70-75°F) and provide plenty of light; a grow light works wonders. Don't forget to water from the bottom to encourage strong root growth and prevent damping off.

Transplant your Early Girl Tomato seedlings outdoors from early March through mid April, after the last expected frost. Before planting, harden them off by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the sun and wind.

Space your plants 24-36 inches apart to give them plenty of room to grow. Keep an eye on the weather; those early weeks can still bring unexpected temperature swings. Be sure to protect young plants from late frosts.

Early Girl Tomatoes need consistent moisture, especially in our arid climate. Since they aren't drought-tolerant, regular watering is key for a good harvest. Our monsoon season can bring some relief, but you'll still need to supplement.

During the spring, water deeply about 2-3 times per week, providing about 1-2 inches of water each time. As the extreme heat of summer sets in, increase watering to every other day or even daily, aiming for 2-3 inches per week. Stick your finger about 2 inches into the soil; if it feels dry, it's time to water. Water at the base of the plant to avoid wetting the foliage and increasing the risk of disease.

Signs of underwatering include wilting leaves and dry soil. Overwatering can lead to yellowing leaves and root rot. Mulching around your plants with organic material like straw or wood chips helps retain moisture and regulate soil temperature.

Early Girl Tomatoes are indeterminate, meaning they'll keep growing and producing fruit throughout the season. They need support to keep them off the ground and prevent breakage. Standard 5-foot tomato cages or sturdy stakes work well.

Install your chosen 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 helps keep the plant upright and allows for better air circulation.

Pruning helps Early Girl Tomatoes focus their energy on producing fruit. Remove the suckers that grow in the "V" between the main stem and branches. This improves air circulation and promotes faster ripening.

Early Girl is one of the earliest-ripening varieties, so focus on removing lower suckers early in the season. As the first frost approaches around early December, you can pinch off the top of the plant to encourage the remaining tomatoes to ripen.

You can expect your first harvest of Early Girl Tomatoes from mid April through late June, about 50 days after transplanting. The fruit is ready when it turns a deep red and is slightly soft to the touch.

Gently twist or clip the tomato from the vine, being careful not to damage the plant. Regular harvesting encourages continued production. As the weather cools in the fall, keep an eye on the forecast. If frost threatens, harvest any remaining green tomatoes and let them ripen indoors.

Early Girl Tomatoes can face a few common problems in our region:

Blossom End Rot

• What it looks like: A sunken, dark brown or black leathery patch on the bottom of the fruit, often affecting the first fruits of the season.
• What causes it: Calcium deficiency caused by inconsistent watering, common in our arid climate with fluctuating monsoon moisture.
• How to fix/prevent it: Water consistently. Mulch heavily to maintain even soil moisture. Avoid over-fertilizing with nitrogen. Remove affected fruit.

Early Blight

• What it looks like: Brown spots with concentric rings on lower leaves, spreading upward. Leaves yellow and drop.
• What causes it: Fungal disease that thrives in warm conditions and spreads via soil splash, especially during monsoon season.
• How to fix/prevent it: Remove and destroy affected leaves. Mulch to prevent soil splash. Water at the base. Improve air circulation. Copper fungicide slows spread. Rotate crops yearly.

Hornworms

• What it looks like: Large sections of leaves stripped overnight. Large green caterpillars with white stripes and dark droppings.
• What causes it: Larvae of hawk moths that feed voraciously and can defoliate plants quickly.
• How to fix/prevent it: Handpick them. Bt spray is effective and organic. Leave hornworms with white cocoons — they are beneficial parasitic wasp eggs.

Cracking

• What it looks like: Splits in tomato skin — concentric circles around stem or radial lines from stem.
• What causes it: Heavy watering after a dry spell, common with unpredictable monsoon rainfall.
• How to fix/prevent it: Water consistently. Mulch to maintain even moisture. Harvest promptly when ripe.

Desert Southwest Specific Challenges: The extreme heat and intense sun can stress tomato plants, making them more susceptible to problems. Our alkaline soil can also affect nutrient uptake. Consistent watering and soil amendments are crucial for success.

Good companions for Early Girl Tomatoes include basil, which repels pests and improves tomato flavor. Carrots loosen the soil and deter nematodes. Parsley attracts beneficial insects. French marigolds repel nematodes and other soil pests.

Avoid planting brassicas (like cabbage and broccoli) nearby, as they compete for nutrients. Fennel inhibits tomato growth. Corn can shade tomatoes too much, reducing fruit production.