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4 causes of yellow leaves

Gardening is such a rewarding activity that can sometimes get a little frustrating when the plants deteriorate for no apparent reason. When you take on such projects, you are likely to encounter various problems and challenges. Most of the causes come from various diseases, pests, severe weather or even accidental but inappropriate care such as over or under irrigation, which are described here with some solutions for most causes of how to cure the problem.

Improper watering

On a plant that lacks regular watering, the leaves eventually turn yellow and fall off due to lack of nutrients. How the plant is watered is often the cause of the problem. Sometimes a plant should not be watered as often as it is, but instead more carefully and make sure that its roots get a lot of moisture ̵

1; which favors a deeper growth – then repeat the process but only after the soil has begun to dry.

Since the roots need oxygen to grow properly, when they are administered too much water, especially when the drainage of the pot is not sufficient, excess water keeps the roots wet and eventually drowns them. The leaves then begin to turn yellow and fall off.

Two symptoms of overwatering

A green crust on the ground surface is an indication of algae, which is a result of overwatering.

When planting a plant, you can check for black roots, which is an indication of the decomposition of the roots. Healthy roots are white.

Corrective steps

Make sure your pot or container has enough drainage and water that waits less often until the soil around it starts to dry before watering again.

Extreme weather

When a garden is in its initial growing stage and the temperature suddenly drops all night to provide frost or extremely cold weather, it will often shock the plants and discourage their normal growth. Even if the frost does not touch the plant, only the cold air can affect the plants, as when an effort of extreme heat and dry weather the plants deteriorate and leave their leaves a sickly yellow appearance. Taking them back can easily take weeks.

3. Pests

Several insects and other pests, such as aphids, milk birds, immature scales, barley, mushroom moths, whiteflies and spider mites, to name a few, feed on plants and foliage. If your leaves begin to form yellow spots, check them well for small creatures (Figures 1 to 7) using a magnifying glass, especially under the leaves. You should first try to identify the type of bugs you are dealing with and follow these steps to resolve the threat with environmentally friendly solutions.

3.1. If you get the infestation early, it may be enough to remove the bugs to clear the problem.

3.2. To get rid of aphids and dairy fish (Figures 1 and 2), you can rub them with a cotton swab after dipping it in alcohol.

aphid infection on a leaf

3.3. When only a small part of the plant is affected, it can only solve to remove the affected parts

milk bird on leaves

3.4. Before the condition becomes too severe, you can use warm water and wash the plants that have smooth leaves every two weeks, which often deters the infestation. With smaller potted plants, you can wrap the soil to keep it inside the pot (with plastic wrap) and then immerse it in the bucket with water and rinse it lightly. The leaves of a larger plant can be showered with warm water or dried with a wet cloth.

3.5. About the problem cofrom peeling insects (Figure 3), unless the infestation is already advanced, they can be scraped off with your nail.

scale bugs on a leaf

3.6. If the plant is robust enough, you can spray all surfaces with water to remove pests, especially to combat spider mites (Figure 4), in which case you just continue to repeat the treatment regularly.

spider mites on leaves

3.7. You can also spray the plant with insecticidal soap when the infestation is still at an early stage. On the downside, insect repellent soap does not work on an insect unless it comes in direct contact with it.

plant pests on leaves

Chemical alternatives

3.8. When all else fails, you may need to use chemical solutions, but read the label to make sure it does not harm your plant. It is also important to understand that a specific pesticide will not kill all types of pests – it is usually effective against specific pests but also at a certain stage of the attack.

3.9. In most cases, either with environmentally friendly methods or with chemical pesticides, the use of any treatment is not enough, as some insects can be hidden or in the egg stage and leave the treatment dry before affecting the insects.

Alternate approach

3.10 Switching between treatment type and pesticide is very important as some pests will develop a pesticide resistance, in which case you will need to use different pesticides as more than one application is required.

4. Nutritional deficiencies

Easier to cure than pests, a careful examination of the leaves or their quality will tell you when it comes to nutrient deficiencies. If the leaves turn yellow with special patterns where the veins remain dark when it turns yellow in between, brown spots, yellow edges or yellow veins begin to appear on the leaves, the plant probably lacks some important nutrients.

Iron deficiency

This will normally be seen in the new growth, causing delayed growth and yellowing of the tissue between the veins which retains its green color from the decrease in chlorophyll activity. Test the soil or test it, adjust and keep the pH level below 7.

Potassium deficiency

This can be diagnosed from older leaves that show brown spots or turn yellow on the edges or the veins turn yellow or brown. The condition can be changed by adding a potassium fertilizer with potassium chloride.

Nitrogen deficiency

This causes delayed growth of the plant with the tips of the leaves turning yellow at the edges, or even the entire leaf sometimes turning a pale yellow color. If you have used coffee grounds, increase the nitrogen content by adding it to the soil. You can also do this by applying a balanced fertilizer.

Magnesium deficiency

This can usually be detected because they first appear on the lower leaves when they start to turn yellow between the veins and the veins remain green. This can be corrected by treating the soil of the plant with E.psom salt (magnesium sulfate). It should only be used in gardens if the soil is testing low magnesium levels.

Calcium deficiency

This will cause the leaves to wrinkle, stain or distort with tips that cannot grow. Adding agricultural lime to the soil will improve its calcium levels.

THEld age

Age is an ongoing process that affects everything in life that does not save plants and flowers. A plant often survives only its natural plant life and leaves with leaves that turn yellow and age.

However, you must realize that whatever causes your plant’s disease can take weeks or months for your plant to recover, so patience and perseverance are crucial.

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