Why do the Leaves Turn Yellow on Plants and How Fix It?

Why do the Leaves Turn Yellow on Plants and How Fix It
Why do the Leaves Turn Yellow on Plants and How Fix It

Why do the leaves turn yellow on plants? Yellow leaves have different meanings depending on (1) the variety of the plant and (2) the other symptoms the plant is exhibiting. Watering, watering, lack of minerals, temperature stress, etc. can all be the cause. In the following, we have broken it down into simple symptomatic math, using a solution to get rid of the yellowed leaves.

What are the seven reasons why plant leaves turn yellow? What can help solve the problem and thrive your plants and gardens?

Below we will describe to you the raisons of why do the leaves turn yellow on plants.

Why do the Leaves Turn Yellow on Plants
Why do the Leaves Turn Yellow on Plants

Water: Over-watering or Dehydration

Watering problems are generally reason of why do the leaves turn yellow on plants. Submersion of plants reduces performance and vitality. Oxygen is expelled from the soil and the roots  simply become “insufficient” and choke. When there is little air, the roots will drown and begin to  rot. Watering also leads to a variety of fungal diseases.

Check the moisture level of the soil. Dig  a few inches near the stem of the plant. Take just a  handful of soil and squeeze it out. If you feel damp or cool, you don’t need any more water for now. Signs:

The mature leaves of water-soaked plants are brownish-yellow and begin to wilt, look supple, and become muddy. Black spots and lumps may appear on the stems and leaves of the plant, and too much water will crack the fruit.

Treatment for Over-watering

First reduce the frequency of watering. Water deeper and less frequently. Also, use a screwdriver to make a hole deep in the root area to add air to the soil. If the plant is in a container, make a hole in the bottom of the pot to make sure the soil is drained well.

Over-watering a plant will do the same damage, but soaking it in water can cause the plant to die much faster. Dehydrated plants look “off” and lack vitality. Underwater plants have poor performance and  may not form properly.

Plants usually get hot and can’t get out of the sun, so they die in the heat of the day. To determine if a plant is getting enough water, check the soil a few inches below the surface  in the morning or  evening. If it gets warm or dry, you need water.

When devising the right watering schedule, keep in mind that the right amount of water depends on the climate, month and temperature. Continue to monitor the plants and check soil moisture levels throughout the growing season. Sign:

The latest and youngest leaves wither and turn yellow. In tomatoes,  plants can develop flower edge rot. 

Treatment for Dehydration

Water is deeper and rarer. Plants benefit from deep watering over frequent light watering. In fact, they prefer tasty drinks to  light showers. This allows the roots to grow deeper, allowing the plant access to  more nutrients in the soil and preventing the soil from drying out  quickly.

Cold stress

Temperature fluctuations (high or low temperature) is the second reason of why do the leaves turn yellow on plants or make the affect leaf health and color. Plants, especially soft vegetables such as tomatoes and cucumbers, can lose color when long-term cold or cold drafts hit the end of spring.

Why do the Leaves Turn Yellow
Why do the Leaves Turn Yellow

Also note the evening temperature. If late frost is announced, cover your plants for the night.  Signs:

Leaves turn yellow and in some cases appear to have charred edges.

Treatment for Cold stress

Patience and time will solve most problems. When the weather is nice, your plants will come back to life and chlorophyll will return to the leaves. If it frosts, cover the plants in the evening with a frost blanket or bucket.


Sunlight is also include of the reason of why do the leaves turn yellow on plants. Yellow leaves appear when the plant receives too little sunlight, and for varieties that are partially shaded, too much sunlight. The leaves are  solar panels of plants. The place where their energy is generated.

When a plant is strong and bushy, it sometimes prevents light from reaching the inner and lower leaves. These leaves cannot photosynthesize and stop producing chlorophyll. The leaves are unproductive, so plants no longer need them.

The Leaves Turn Yellow
The Leaves Turn Yellow

Partially shaded plants and cabbage crops such as lettuce tend to burn and turn yellow during the hot summer months. These vegetables (or flowers) are best planted in early spring or autumn, or in partially shaded areas. However, if you are already growing big, avoid direct sunlight in the heat of the day.

Character: Usually thick plants have yellow leaves on the underside or inside. Due to heat stress, the leaves turn yellow and burn in places.

Treatment for Sunlight

Simply removes unproductive yellowed leaves. Plants are okay without them. Protect plants that fail in the afternoon direct sunlight to avoid burns. If it is in a pot or container, move it to the shade of the garden when the outside temperature begins to rise.


A common reason for plant leaves to turn yellow is a lack of essential nutrients in the soil. Plants lacking these minerals exhibit other symptoms, but generally they are discolored, inactive, or simply do not grow well.

Essential minerals are absorbed from the soil and each plant needs different nutrients. Know what each of your plants needs and test your soil regularly to make sure it’s in the right amount.  Signs and Corrections for 6 Essential Nutrients:

Calcium-Leaves are yellow and distorted with a “crispy” feel. In tomatoes,  plants can develop flower edge rot. Fix: Test the soil and add lime if it is acidic and plaster if it is alkaline. Alkaline soils are more common than acidic soils in the Intermountain West.

Iron-Leaves are usually chlorotic. Green veins and yellow. Plant growth is dysgenetic and is usually first noticed by new growth. Correction: Test the pH of the soil  and lower it to less than 7.

Nitrogen-Pale yellow leaves  (usually  the top of the plant) during new growth. It begins with the central vein and tip turning yellow, and plant growth is also usually stunted. Fix: Add fertilizer compost or used coffee grounds to the soil.

The Leaves Turn Yellow on plants
The Leaves Turn Yellow on plants

Magnesium-Yellow leaves with white stripes still along the green veins. It usually first appears on the lower extremities. Correction: Add compost or fertilizer rich in magnesium sulphate (commonly known as Epsom salt) to the soil.

Potassium-Leaf edges and tips are yellow, and mature leaves can develop brown spots or tan veins. Correction: Add fruit and vegetable compost to the soil or bury citrus peels at the roots of the plants. Potassium-specific fertilizers can also be used.

Zinc-Leaves look large and lightly discolored between large veins. Correction: Spray seaweed extract or apply  fertilizer containing zinc.

Treatment for Undernourishment

Always works to improve soil health. In spring or autumn, mix the  compost and soil conditioner into the soil  and add humate all year round. Rotate 46 inches underground. For growing season, add between the row and the plant, scrape the top 23 inches and mix with a long handle 3 prong cultivator. Also, rotate your plants every year to  prevent pests and diseases and  maintain a rich and fertile growing environment for the plants.

Individual nutrient deficiencies may require certain types of treatment (as described above). Remember to test the soil to find the exact problem and treat it accordingly. When treated with fertilizer, apply  directly to the soil as indicated on the label to allow the plant to absorb the appropriate amount of  nutrients it needs.

In general, it is advisable to add a balanced nutritional fertilizer at the beginning of the growing season, such as the IFA Grand Champion Universal Fertilizer (161616). It contains  essential major nutrients along with minor nutrients like iron, magnesium, zinc and many micronutrients to keep your garden  fertile  throughout the season. IFA Premium Garden Fertilizer (16168) is also a good option. Once the vegetables and flowering plants are well established,  the soil is replenished with Fertilome Blooming & Rooting Plant Food (9588) to  produce more flowers and  heavier fruit crops.

Over Fertilization

The garden doesn`t perform well when it lacks essential nutrients, but keep in mind, your plants can be overfed too. More is not always better. When the soil is over fertilized, the plants have difficulty absorbing all it needs and the pH level may sometimes change.  Signs:

Leaves turn yellow or brown, dry out, and commonly fall down. More specifically with nitrogen, a plant with too much will grow an abundance of branches and leaves with little to no fruit production. 

The Leaves Turn Yellow on plants why
The Leaves Turn Yellow on plants why

Treatment for Over Fertilization

You could test your soil before applying any fertilizer. It`s not necessary, but it can help you start down the right path to determine what your soil needs and make a plan.

Fungal & Viral Disease

Fungal dan viral disease are also the why do the leaves turn yellow. Its not difficult. But we have fix it with an accuration.

The leaves on your plants may also turn yellow and display additional symptoms if it has been infected with a fungal or viral disease. The signs and treatments vary depending on the disease type. You may even see various degrees of development. This helps you determine that it`s likely a disease.

Curly Top – This virus, carried by the beet leafhopper, causes leaves to turn upward and yellow, purplecolored veins, premature fruit and stunts growth. Treatment: Check with your local extension agent to find out if beet leafhoppers have entered your area yet this season, and try preventative measures. Once your plant becomes infected, those parts need to be removed. The plant may still produce new growth and fruit, but it will no longer reach its peak size or level of production.

Early Blight – Your plant starts to show brown spots, then the leaves turn yellow and fall off.

Treatment for Fungal

Early blight is usually avoided by rotating crops annually (planting crops in different spots each year) and using fungicides.  Septoria Leaf Spot – High humidity, high temperatures and overhead watering can cause lower leaves to develop dark brown circular spots with a yellow ring. It`s one of the most destructive fungal diseases on tomato foliage and usually appears after the first fruit sets. Treatment: Rotate crops annually and avoid overhead watering. Some fungicides will help as well.

Treatment for Viral Disease

Water properly to help prevent many fungal diseases. Avoid overhead watering and watering too much. Use either drip, furrow or flood irrigation, and soak thoroughly on a consistent basis rather than giving your plants a light sprinkling every day. This will encourage a healthy, deep root system.


Pests are also the reason why do the leaves turn yellow. Along with beet leafhoppers, there`s a number of additional pests infesting our gardens. Aphids, mites, earwigs, mealybugs, thrips, scale, or whiteflies–amongst many others–are all typically found around our fruits, flowers and vegetables.  Signs:

The damage and symptoms of the plant depend on the type of pest, but leaf yellowing is most often a common sign. As soon as you notice a problem,  find and identify the insect that is causing the problem. When  observing the plants closely, look up and down the leaves. Look for additional symptoms, insects, and perhaps eggs. Also, check for dark and cool places, such as under  lettuce. Earwigs and other insects like to hang out in these places. 

Treatment for Pests

Check the plants regularly and treat the pests early. You will notice changes in your plants before they become a big problem.

There are many treatment options (chemical and organic) available, depending on the insect and your level of comfort. However, regular washing of plants  with pesticides and garden soaps is an effective and environmentally safe way to  prevent and treat many pests.

Summary of Answers about Why do the Leaves Turn Yellow

There are many things that cause of why do the leaves to turn yellow on plants. Each requires its own way of dealing with it. If the cause is water, whether excess water or dehydration, then the treatment is a matter of irrigation. If the problem is nutrition, then the treatment is to provide adequate nutrition. Likewise, if the cause is pests, then we need to spray pesticides.

Any cause that the reason of are also the why do the leaves turn yellow on plants. We have to fix it to save aur plants. Let’s garden smarter.