11 Reasons Your Tomatoes Are Struggling This Season • Schisandra & Bergamot

Tomatoes are a garden favorite, but they can be surprisingly finicky. Even seasoned growers run into problems with yellowing leaves, poor fruit, or stunted growth.

If your tomatoes are looking sad this season, here are 11 potential reasons why—and how to turn things around.

Not Enough Sunlight

A single ripe red tomato hangs from a green vine among leaves and grass in a garden. — Photo Credit: Sonyachny/Envato

Tomatoes are sun-loving plants that need at least 6–8 hours of direct sunlight daily. Without enough light, they’ll grow leggy and produce fewer fruits.

Inconsistent Watering

A young tomato plant is being watered with a green watering can in an outdoor garden. — Photo Credit: wirestock/Envato

Letting your plants dry out completely and then overwatering them can cause fruit splitting and blossom end rot. Consistency is key for healthy tomato development.

Lack of Nutrients

Several green tomatoes growing on a vine, with one tomato showing signs of disease or rot. Green leaves surround the fruit. — Photo Credit: zhaaks/Envato

Tomatoes are heavy feeders, and poor soil can lead to weak plants and low yields. Regularly amend with compost and a balanced fertilizer to support their growth.

Disease Problems

Close-up of scissors cutting a stem with two ripening tomatoes on a plant with wilted leaves. — Photo Credit: evablanco/Envato

Fungal diseases like blight or wilt can quickly take down even the healthiest plants. Remove infected leaves, rotate crops yearly, and consider disease-resistant varieties.

Pest Infestations

Tomato plant with green and yellow leaves showing spots and signs of disease, including a wilted brown leaf, and a ripe tomato in the background. — Photo Credit: colnihko/Envato

Tomato hornworms, aphids, and whiteflies love tomato plants. Check under leaves regularly and act fast if you spot any damage or pests.

Too Much Wind or Heat

A young tomato plant with green leaves growing in dry, sandy soil outdoors. — Photo Credit: protastyfood/Envato

Extreme weather can stress tomato plants, leading to curled leaves or dropped flowers. Provide some shelter during heatwaves and strong winds.

Crowded Plants

Tomato plants with ripe and unripe fruit growing in rectangular containers against a red wall; a white watering can is on the ground nearby. — Photo Credit: ChiccoDodiFC/Deposit Photos

Tomatoes need good airflow to prevent fungal diseases. Space your plants properly and prune excess foliage to give them room to breathe.

Soil Imbalance

Two hands hold and let soil fall over a field, with loose earth visible in the background. — Photo Credit: kolesnikovsergii/Envato

Too much nitrogen results in lush leaves but few fruits, while calcium deficiency causes blossom end rot. Soil testing can help you strike the right balance.

Planting Too Early

Gloved hands planting a young tomato plant in dark soil in a garden. — Photo Credit: yanadjana/Envato

Cold soil and chilly nights can stunt young plants or kill them off completely. Wait until nighttime temps stay above 55°F (13°C) before transplanting.

Temperature Swings

Green tomato plants with yellow flowers growing inside a greenhouse, supported by vertical strings attached to the overhead structure. — Photo Credit: viktelminova/Envato

Tomatoes don’t like sudden changes in temperature, which can cause flowers to drop or fruits to stop ripening. Use row covers or shade cloths to protect against sudden weather shifts.

Not Pollinating Properly

A tomato plant branch with green leaves, a small unripe tomato, and yellow blossoms against a light-colored wall. — Photo Credit: Sonyachny/Envato

If you’re seeing flowers but no fruit, your tomatoes might not be getting pollinated. Attract pollinators or gently shake flowers to mimic nature's process.

Once you know what’s holding your tomatoes back, it’s easier to fix the issue and get your garden back on track. With a little extra attention, your tomato plants can still thrive this season.