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Why are the leaves on my tomato plants turning brown?

Author

Olivia Carter

Published Mar 17, 2026

Why are the leaves on my tomato plants turning brown?

Tomato plants need consistent care in order to thrive. Stress from drought often appears first as browning, drying leaf margins before spreading farther into the plant's tissue. Fertilizer burn may cause similar symptoms due to contact damage to tender roots in the soil.

In this regard, why are my tomato plant leaves turning brown on the edges?

Most commonly brown leaf tips or brown edges on leaves are caused by the plant not getting enough water. There are several reasons why this may happen. There may be too little natural water falling. If this is what is causing the sides of the leaf to turn brown, you should supplement the rainfall with manual watering.

Also, why are the leaves on my tomato plant drying up? Water, Pesticides and FertilizerToo much water can also result in yellow, wilted leaves. Nutrient deficiencies in the soil can also cause dry leaves. Too much fertilizer or inappropriate use of pesticides around the tomato plants will make the soil toxic to the plant, causing leaves to dry up and the plant to die.

Besides, why are the leaves on my tomato plants dying?

Environmental Tomato IssuesEnvironmental issues, such as a lack of water, too much water, poor soil and too little light can also cause tomato plants to fail and die. Watering issues – When a tomato plant is under watered or over watered, it reacts the same way. It will develop yellow leaves and will look wilted.

Why are the leaves on my tomato plants turning black?

There are a number of fungal diseases that result in a stem turning black on tomatoes. Amongst these is Alternaria stem canker, which is caused by the fungus Alternaria alternata. Bacterial canker is another tomato stem disease that causes black spots on stems of tomato plants.

Should I cut brown leaves off?

Yes, but leave just a little bit of brown on each leaf to avoid stressing the plant. If it's brown and dry, then cut the whole leaf, but not too far from the main branch so that it will grow a new leaf. If it still green but just the tip is brown, then use a sharp pair of scissors to just trim the edges.

Should you water tomato plants everyday?

Early in the growing season, watering plants daily in the morning. As temperatures increase, you might need to water tomato plants twice a day. Garden tomatoes typically require 1-2 inches of water a week. If soil feels dry about 1 inch below the surface, it's time to water again.

Should I remove yellow leaves from tomato plant?

If your plants are grown with adequate space between them, light will reach the lower leaves and they don't have to be removed. When lower leaves start getting yellow it is a sign that they are shutting down and they should be removed before they become a sugar drain on the rest of the plant.

What do Overwatered tomato plants look like?

When tomato plants receive more water than they can use, the signs are clear in the plant and the surrounding soil. Early signs of overwatering in tomato plants include cracked fruit and blisters or bumps on the lower leaves. If the overwatering continues, the bumps or blisters on the leaves turn corky.

Can Brown leaves turn green again?

Leaf tips turn brown when that lost water can't be replaced for some reason. Ideally, water flows from plant roots through stems and waterways until it finally reaches leaf tips last. Once they turn brown, those dead tip cells can't be revived, but quick corrections help restore the rest of your plant to health.

What causes tomato leaves to curl and turn brown?

Transmitted by Bemisia whitefly species, tomato yellow leaf curl is caused by the tomato yellow leaf curl virus, which is a geminivirus. It causes tomato plant leaves to curl upward and turn pale green. Fruit production is also reduced, particularly when plants are infected while young.

What do brown tips on leaves mean?

When houseplants get brown tips on their leaves, it's generally an indication of poor watering habits. The best way to water a houseplant is to thoroughly flush it until water runs freely out the drainage holes. Shallow watering can cause brown tips on the leaves.

Why are the tips of my leaves turning brown?

Leaf tips turn brown when that lost water can't be replaced for some reason. Anything that inhibits roots from absorbing enough water — or supplying it to the plant fast enough — can lead to unsightly brown tips. This includes providing the plant with too much water, too little water or too much fertilizer.

Should I cut dead leaves off my tomato plant?

Yes, you can cut dead leaves off a tomato plant, and this can be especially helpful if you are worried that the leaves might be diseased. Removing dead leaves may help increase the fruit production.

How do you revive a dying tomato plant?

Give your tomato plants one inch of water each week; with any less, they will wilt. Water wilting plants to revive them quickly. Move the tomato plants if they are in close proximity to a walnut tree, as walnuts create juglone, a toxin that enters the soil and can kill surrounding plants.

How often should tomatoes be watered?

There is no hard and fast rule to this. It depends on how hot it is and if the plant is actively growing. A good rule of thumb is to supply water once every two or three days at the height of summer. Remember that water supplied by Mother Nature counts towards watering tomato plants in the garden.

What does tomato blight look like?

Symptoms of Early Blight on Tomatoes

Early blight is sometimes confused with Septoria leaf spot. They both form spots on the leaves, which eventually turn yellow and die off, but Septoria also forms fruiting bodies that look like tiny filaments coming from the spots. Both green and ripe tomatoes can be affected.

Does baking soda kill tomato blight?

Baking soda has fungicidal properties that can stop or reduce the spread of early and late tomato blight. Baking soda sprays typically contain about 1 teaspoon baking soda dissolved into 1 quart of warm water. Adding a drop of liquid dish soap or 2 1/2 tablespoons vegetable oil helps the solution stick to your plant.

What animal eats tomatoes at night?

Squirrels and birds usually take small bites out of the tomatoes before moving on, while raccoons might pull the tomatoes off the vines. Squirrels and birds move about the garden in the day, while raccoons are mostly nocturnal, making them harder to catch.

How do you use Epsom salt on tomatoes?

Add two tablespoons of Epsom salt to a gallon of water and use tank sprayer to apply the mix once a month substituting the spray for a regular watering. Use one tablespoon per gallon of water if you apply Epsom salt spray more often than once a month. Begin foliar spraying when blooms first appear.

What are the signs of over watering tomato plants?

Early signs of overwatering in tomato plants include cracked fruit and blisters or bumps on the lower leaves. If the overwatering continues, the bumps or blisters on the leaves turn corky. Meanwhile, the roots begin to drown, die and rot, which reduces the amount of water the green part of the plant receives.

What do Epsom salts do for tomato plants?

Late in the season use an Epsom salt spray to increase tomato and pepper yield and keep plants green and bushy; early in the season add Epsom salt to the soil to aid germination, early root and cell development, photosynthesis, plant growth, and to prevent blossom-end rot.

What is best insect spray for tomato plants?

Mix up 1 tablespoon of baking soda, ½ teaspoon mild detergent and 2 ½ tablespoons of olive oil in a gallon of water to make a repellent for all kinds of bugs as well as a fungicide for blight and mildew on the tomato plant leaves. Shake it well before spraying and repeat every week for it to be effective.

Will my wilted tomato plants recover?

Tomato wilt is a symptom of dis-ease that makes the tomato plant leaves droop and lose their shape. It should recover, but if it got too dry or this happens very often, don't expect a good crop off of that plant. On the flip side, too much water can cause wilting of plants.

How do you water tomatoes in pots?

A good rule of thumb for containers is to water until water runs freely from the bottom. Water in the morning and check the soil moisture levels again in the afternoon. If soil feels dry about 1 inch below the surface, it's time to water again. Adding organic mulch to tomato plants reduces evaporation in the soil.

Is Epsom salt good for tomatoes plants?

Epsom Salt, Tomato, and Pepper Growing. Epsom salt used as a foliar spray or soil additive will help tomato and pepper plants grow and produce larger, tastier yields. Epsom salt is highly soluble and easily taken in by plants when combined with water and sprayed on leaves.

What is the best fungicide for tomato plants?

What is the best fungicide for tomatoes?
Mancozeb Flowable with Zinc Fungicide Concentrate.
Spectracide Immunox Multi-Purpose Fungicide Spray Concentrate For Gardens.
Southern Ag – Liquid Copper Fungicide.
Bonide 811 Copper 4E Fungicide.
Daconil Fungicide Concentrate.
Conclusion.

How do I add calcium to my soil?

Dolomite Lime (Calcium carbonate)

In addition to adding a good amount of calcium to your soil, dolomitic lime also contains magnesium carbonate and it's therefore used for raising pH on low-magnesium soils. If a soil test shows that magnesium levels are already high, choose another calcium product.

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