Content
Often, with improper agricultural technology, many plants begin to ache and wither. Hydrangea leaves turn yellow - a sure sign of lack of care or nutrition. The faster the recovery operations are carried out, the more chances there are to return a healthy appearance to the shrub.
Why does hydrangea have yellow leaves
Every housewife wants her indoor and ornamental plants to be healthy and enjoy abundant flowering. Hydrangea is grown not only in personal plots, but also at home. The appearance of yellow leaves in different growing conditions can be caused by several reasons.
For the proper development of any ornamental shrub, water and sunlight are needed. Despite the fact that hydrangea is a rather unpretentious plant from the point of view of watering, improper agricultural technology can seriously damage the health of the plant. It tolerates excessive waterlogging very badly - abundant watering spoils the root system of the bush.
If the leaves begin to turn yellow, it is necessary to establish the cause as soon as possible.
Hydrangeas also need to create special conditions in terms of lighting. Prolonged exposure to direct sunlight leads to leaf burns and their further wilting. It is best to plant the shrub in partial shade or between large fruit trees.
Why do the leaves of room hydrangea turn yellow
Many ornamental shrubs take root well at home. Having created ideal conditions for them, you can enjoy bright leaves and lush blooms throughout the year. But it is not uncommon for a hydrangea to suddenly change the color of its leaves to yellow and brown. Most often, the reasons for this ailment are the following factors:
- Lack or excess of moisture. It is necessary to water the plant only after the topsoil is completely dry.
- Insufficient humidity in the room. It is recommended to carry out additional spraying of the leaves or install a special climatic device.
- Low amount of nutrients. Hydrangeas require periodic fertilization - once every 7-10 days.
Don't forget about sunburn. Most often, they happen when the pot is placed on a windowsill in the southern part of a house or apartment. It is best to place the plant on the west or east side of the dwelling - this will provide a moderate amount of sunlight.
Why do the leaves of the garden hydrangea turn yellow
Unlike a home plant, placing a shrub on a site requires the gardener to follow clear conditions for caring for it. It is necessary to prepare the landing site in advance - it should not be too open, but not too shaded. It is required to observe the irrigation schedule for fertilization.
Despite strict adherence to agricultural technology, many gardeners are faced with the fact that the leaves gradually begin to turn yellow.This can be caused by a huge number of factors - from excess moisture to damage by insects and other pests. In case of detection of the first signs of the disease, it is important to start measures to resuscitate the bush as soon as possible.
Causes of yellow leaves in hydrangea
As soon as the plant has shown the first signs of wilting, it is necessary to pay attention to a large number of factors that could be the cause. If the leaves of paniculate hydrangea turn yellow not due to moisture and excess sun color, the first step is to study the planting site. Hydrangea prefers acidic soils - high alkali content can lead to drying of the shoots.
The most common cause of yellow leaves is poor watering.
It is also important to pay attention to the ventilation of the landing site. The bush is quite sensitive to strong winds. Under unfavorable conditions, the leaves lose moisture, begin to turn yellow and dry out. In this case, it is recommended to either cover the hydrangea with special protective screens, or transplant it to a quieter place on the site.
Wrong choice of seedling
Modern nurseries abound in a huge number of ornamental plants of all shapes and colors. This is also facilitated by the rapid development of selection - every year several new varieties of flowers and shrubs appear. However, it is worth remembering that not every type of hydrangea can be cultivated in the original conditions.
Most often, when choosing seedlings, inexperienced gardeners prefer varieties with the longest and most lush flowering. For example, the leaves of large-leaved hydrangea turn yellow almost immediately with spring frosts. Despite the fact that even nurseries in the northern regions sell these types of hydrangeas, over time, the bushes will begin to turn yellow due to the wrong climate. It is better to choose a variety that is resistant to sudden changes in temperature and intended for cultivation in a specific climatic zone.
Improper care
In addition to strictly adhering to the schedule of watering and applying complementary foods, the shrub also needs additional manipulations to maintain a healthy appearance. Often the leaves of hydrangea paniculata begin to turn yellow with insufficient oxygen supply to the roots in August and September. To avoid the wilting of the shoots, it is necessary to dig up the near-trunk circles several times a year.
To prevent the leaves from turning yellow, it is important not to neglect the pruning of the bush. If all the shoots are lacking in nutrients, periodical thinning of the branches is necessary. It is carried out after the snow melts before the active circulation of the juice inside the trunk begins.
Unfavorable weather conditions
Even with full compliance with the rules for caring for a tree or panicle hydrangea, the leaves may begin to turn yellow due to the vagaries of nature. Prolonged rains or prolonged droughts negatively affect the health of most plants. Excessive waterlogging harms the root system of the hydrangea, and the sun dries up the shoots.
Shoots may turn yellow due to sudden frost
Also, sudden changes in air temperature can be the cause of the sudden wilting of the plant. Night frosts in late spring or early summer harm fragile shoots. This is often the reason that whole branches turn yellow and gradually die off.
Diseases and pests
One of the most common reasons why hydrangea leaves begin to turn yellow is its defeat by various viruses or microorganisms. Like most other ornamental plants, it has typical diseases that can lead not only to wilting, but also to the complete death of the shrub.
Such ailments include:
- chlorosis;
- powdery mildew;
- white rot.
Among the pests, leaf aphids and spider mites are distinguished.Also, there are frequent cases of damage to hydrangea by garden slugs and rootworm nematode. When parasites appear on a healthy plant, it is necessary to carry out a set of measures to destroy them as quickly as possible.
What to do if hydrangea has yellow leaves
As soon as the shoots begin to fade on the bush, it is necessary to establish the cause of this as quickly as possible and start taking action. It is important to remember that the sooner action is taken, the greater the chances of keeping hydrangeas healthy.
If the leaves turn yellow, then the following approaches are used:
- with a lack of moisture - increase the frequency of watering;
- with an excess of liquid - cancel the introduction of water for a while;
- in case of diseases - treatment with special chemicals;
- with insufficient acidity of the soil - the introduction of special dressings;
- if pests are detected, the use of insecticides.
If the leaves begin to turn yellow due to damage to the roots caused by improper farming, the hydrangea must be transplanted. In this case, the damaged areas of the root system are removed. In the planting pits, the drainage layer is increased and additional acid fertilizers are added.
How to feed hydrangea when the leaves turn yellow
Regular fertilization helps to maintain a healthy appearance and ensure abundant flowering. If the leaves suddenly turn yellow, an unscheduled feeding is necessary, which will restore health and recuperate after an illness.
If the leaves turn yellow, you need to apply nitrogenous fertilizers.
The most important fertilizer for hydrangeas is urea. It contains a large amount of nitrogen, which is necessary for the rapid transfer of nutrients from the roots to the leaves. 10-20 g of urea is mixed with 10 liters of water and applied under each bush.
In addition to urea, experienced gardeners recommend ammonium nitrate, chicken manure, or cow dung. If the leaves turn yellow, these baits will help stop the entire plant from withering.
Experienced gardening tips
If the hydrangea leaf turns yellow, it must be removed. No method will allow you to return the green color to the shoot. All technologies are aimed only at stopping the disease. If a whole shoot dies off, it is best to cut it off completely so as not to spread the lesion.
Often, hydrangea leaves begin to turn yellow when the shrub is watered with the wrong water. Hard tap water with a lot of impurities negatively affects the root system of a young plant. It is best to boil it before watering and cool it to room temperature.
Since the shrub prefers acidic soils, you can feed it with natural additives. Add a few drops of lemon juice to 1 liter of water. It can be replaced with vinegar essence - in this case, it is added at the rate of 1 tsp. 10 liters of water.
Conclusion
Hydrangea leaves turn yellow - a sign of improper agricultural technology. Most often, this ailment is caused by non-compliance with watering or care technology. As soon as the first signs of wilting were discovered, it is necessary to take a set of measures to restore the health of the plant as soon as possible.
