Houseplants Published: May 29, 2012 Reprinted: Last edits:
Every florist knows that indoor flowers, like any living creature, require constant attention, care and guardianship. Today I propose to talk about a problem that sooner or later everyone who grows indoor flowers faces. We will talk about the reasons for the yellowing of plant leaves. I do not mean the natural aging of the leaves, which manifests itself in their yellowness, but the cases when yellowing and loss of leaves are not normal for the plant. If the leaves turn yellow from old age, needless to say that this disease cannot be cured ...
So, Why do the leaves of indoor plants turn yellow? Let's consider the main causes and ways to eliminate them.
Leaves may turn yellow due to waterlogging. Most indoor plants need moderate watering and moderate humidity to thrive. Before you buy a new indoor flower, be sure to research its real needs for light, water and fertilizer.
Curb your enthusiasm. The bad habit of taking a watering can and watering everything on the windowsill can cause irreparable harm to plants that do not need that much moisture. But it also happens the other way around - the leaves turn yellow because the soil in the pot is not moistened for a long time. Use an individual approach to each plant and make a watering schedule that you follow strictly.
Constant drafts - the second reason for yellowing of the leaves of indoor flowersespecially sensitive to drafts of tropical plants. Remember that indoor plants do not like being near drafts, fans and air conditioners - with everything that cools and blows.
Rearrange the flowers so that they are not in the path of air currents, so that, being in a secluded place, the plants receive their share of fresh air when ventilated without the risk of catching a cold and turning yellow.
Leaves turn yellow from both lack and excess of light. A characteristic sign that the leaves turn yellow due to lack of sunlight is that the leaves turn yellow on the side of the plant that is turned into the shade. Although it was the other way around: the violet turned yellow, and when I removed it in the shade, the leaves regained their green color. Sunburn is just as bad for plants as lack of light.
If you cannot arrange the plants so that each of them has enough natural light, use artificial lighting. The best help in this regard is fluorescent lamps.
Due to the lack of nutrients in the soil, the top leaves of plants usually turn yellow. To save indoor flowers from starvation, increase the dosage of fertilizing or simply fertilize the plants more often. But do not bend: from an excess of fertilizer in indoor flowers, problems can also begin.
Very often leaves of plants infected with viruses turn yellow. A characteristic sign of infection: the leaves not only turn yellow, but also become covered with spots. For example, chlorosis of indoor plants is a disease that disrupts the natural processes of photosynthesis. The leaves turn yellow and fall off, the tops and weak roots of the plant can die off. If signs of chlorosis are found, feed the diseased plant with a complex mineral fertilizer such as "Uniflor-Micro".
Sections: Houseplants Houseplant pests Houseplant diseases
Aglaonem flower Is one of the ornamental indoor plants that is becoming more and more popular with gardening enthusiasts. In principle, this plant is unpretentious and does not require special care. But she also has standard floral problems such as yellowing of the leaves. In addition, the shower can be deformed and change color to painful. And this means that the flower is sick or you made a mistake in leaving. domisad.org
Why do the leaves of Aglaonem flower turn yellow?
The main reason for yellowing is low air temperature. Or cold and draft coming from the window in the winter. Aglaonema loves warmth.
Attention! If the frozen plant is also watered more than it should be, the plant may die altogether.
What to do? The first thing you need to do to solve the problem is to put the plant in a warm place and stop watering it until the soil is completely dry. That's all the treatment.
By the way, sluggish leaves, as well as if they dry out, can be a symptom of hypothermia. But pale leaves indicate that the flower does not have enough fertilizer, and this is not related to the cold temperature.
The second reason why Aglaonema leaves can turn yellow is direct sunlight. Aglaonema loves diffused sunlight and room temperature water.
Good to know - Aglaonema flower loves soft water, and if you have problems with this plant, try softening the water for irrigation with citric acid.
Attention! If the lower leaves of Aglaonema turn yellow, then this is a natural abscission of the lower leaves and their aging.
If you need more information about this plant, visit our page: Indoor flowers from A to Z
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Don't forget to read the comments! You can also find a lot of useful information there. And also, add your own, it is possible to attach a photo or picture.
On the site, summer residents often ask questions about problems with indoor plants. We will determine the reasons in the form of a quiz: a question and an answer.
If this happens with other leaves, and even at the same time, then the plant is watered incorrectly. Or it is too hot in the room, but there is not enough light, and even drafts.
With a lack of light, the parameters of the photosynthesis process change. Photo from ambius.com
Bougainvillea. Photo from the site joyusgarden.com
If this happens with other leaves, and even at the same time, then the plant is watered incorrectly. Or it is too hot in the room, but there is not enough light, and even drafts.
Leaves signal a problem
This is how the leaves of houseplants may look if the water for irrigation is hard or with a large amount of minerals, and the soil contains quite a lot of them.
Ficus is rubbery. Yellowing leaves are visible. Photo from the site v.img.com.ua
Or the soil is heavy, sometimes so much that the root system does not have enough air. Or the air in the room where the plant is located is too dry.
If it is cold in the room during watering, then the plant will have to store excess moisture, because it will not be able to evaporate it. All procedures should not be quick, the plant must be accustomed to a new lifestyle gradually.
Bacterial infection of the pelargonium leaf. Photo from extension.psu.edu
Perhaps, from a lack of light, the sheffler's variegation is lost.
The result of the work of thrips, Photo from missouribotanicalgarden.org
That's who eats the leaves
You can find a wide range of universal and special fertilizers for indoor plants in our catalog, which combines offers from various garden online stores. View a selection of fertilizers for indoor plants.
If the leaves not only dry, but at the same time dark dots and traces of gnawing are clearly visible on them, it is worth treating the bush with Fitoverm from aphids and thrips. The drug will also help get rid of spider mites, which often appear on roses. You can easily find it by the thin cobweb under the leaves.
All leaves affected by pests should be removed.
High air temperature and dry indoor air are the main causes of plant pests. Spider mites, mealybugs, thrips, scale insects and aphids love flower leaves, from which they suck out juices. As a result, the leaves of Dieffenbachia dry and turn yellow, young shoots are deformed, the plant lags behind in development and is depleted.
If the leaves on dieffenbachia began to turn pale, turn yellow and dry, first of all, the leaf plates should be carefully examined from all sides. At home, in dry air, a spider mite is most often found on flowers. You can recognize this insect by its cobweb and small brown dots, which are ticks.
What to do if pests start on Dieffenbachia? You can get rid of them with the help of insecticidal preparations. The infected leaves should be cut off first, since it is impossible to restore them. The field of this bush is well washed under the shower. It is necessary to wipe each leaf with a sponge from all sides. If there are few pests, then such a procedure may be sufficient. But most often you have to resort to spraying plants with Aktellik or Fitoverm.
As you can see, the leaves on dieffenbachia turn yellow and dry mainly due to improper care. Therefore, if the leaves began to lose their decorative effect, the care and maintenance of the plant should be reconsidered.
Dieffenbachia are demanding on air humidity. Do not place plants above or near the radiator; spray regularly with cool, settled water. You can purchase a humidifier, or at least set the plant on a pallet with wet expanded clay. Dry ends can be carefully trimmed to living tissue, keeping the shape of the leaf. Attention! Dieffenbachia juice is poisonous, cut with gloves, rinse scissors, do not let the juice get into your mouth and eyes.
It's dry in the apartment, spray more often!
move away from batteries and spray frequently
The air in the apartment is dry, spray more often.
Dieffenbachia are light-loving plants, but they require mandatory shading from direct sunlight. In a very dark place, the leaves become smaller and less attractive.
What it still does not tolerate is the drying out of the earthen coma. Thus, regular watering is required, as well as washing the leaves with water from a spray bottle. For watering and spraying, use only well-settled tap water at room temperature.
Humidity: additional information
Needs frequent spraying and regular washing of the leaves.
Experts arrange a dormant period for Dieffenbachia from September to March, so that, due to insufficient illumination in the winter, small, hardly viable leaves do not develop. During the dormant period, watering is reduced, and fertilizing with fertilizers is not carried out at all. From time to time, the leaves are sprayed with water.
Dieffenbachia are propagated by apical and stem cuttings at high air temperatures. Dieffenbachia also bloom in rooms, however, this greatly inhibits the growth of plants. The inflorescence is usually broken off, otherwise the growth of leaves will stop for a while and the plant will be bare from below. Over the years or with poor care, the lower part of the stem is also exposed.
At least 1 time in 3-4 years, dieffenbachia is transplanted into not very large pots and ordinary soil for indoor plants, to which you need to add a little charcoal. Regular weekly fertilization from April to August - but only during this period - stimulates the formation of new leaves and improves the general condition of the plants. If the plants become too large with an unattractive bare stem, they can be cut off, leaving a stump about 10 cm high, from which new shoots will begin to grow.
The base of the stem is soft and loses color - stem decay. The disease is promoted by waterlogging of the soil and low air temperature. At the beginning of the disease, you can cut out the affected area, rub the wound with crushed charcoal and transplant the plant into fresh soil. If the lesion is extensive, the apical part of the stem can be rooted and the rest of the plant discarded.
The lower leaves turn yellow and curl - low temperatures in winter or cold drafts. The plant will be able to survive temperatures of 10-12 ° C, but the lower leaves will inevitably suffer.
Loss of color - too bright light or direct sunlight on the leaves leads to their discoloration. Move the plant to a less lit area.
Dying off of leaves - the most likely reasons for the dying off of young leaves - too low temperature, dry air or cold drafts. Old leaves always die off with age.
Brown edges of the leaves - drying out of the soil. It should always be moist, but not waterlogged. Cold air can be another reason.
ventilate the room and remove from the battery.
Spray more often, because dry air!
We consider the problems when growing anthurium: leaves turn yellow, dry, blacken the leaves or their tips, as well as brown spots, rust on them. We describe the reasons for the appearance of these symptoms and the frequent diseases of the leaves of "male happiness".
Leaves can turn yellow for a variety of reasons. Most often this happens with unbalanced lighting, improper watering, lack of nutrients, as well as with pests and due to various diseases.
To find the cause, you need to read the recommendations of experts and analyze your care at home.
Therefore, we recommend that you look at detailed instructions:
"Male happiness" loves bright diffused light (10-12 hours a day), but without direct sunlight. Leaves can also turn yellow due to lack of lighting (October - March and northern windows - illuminate with lamps) or from sunburn (summer, more often than others on the southern window).
A burn on the leaves of anthurium looks like a large yellow spot, which is often surrounded by dry brown or blackened areas. The burnt leaf must be removed, and the flower must be placed in another place (east or west window) or darkened.
Various options for yellowed leaves
Yellowing of leaves can cause both excess and lack of water, as well as its temperature and mineral composition.
Yellowing after transplant
Fragile roots could be damaged during transplantation. For information on what to do next, see the same article on transplantation (link above in the article).
Top dressing and fertilizers
Anthurium does not need a large amount of minerals (excess is harmful). It must be fed in moderation: from March to September every 15-30 days, 20-50% of the dose of liquid fertilizer for flowering species.
"Male happiness" is most often attacked by spider mites, aphids, (especially young leaves) and scale insects. They suck out the juice, because of this, the leaves turn yellow and fall off.
Why do leaves turn yellow and fall?
Fungal diseases: anthracnose, root and gray rot, downy mildew, rust, septoria and fusarium.
Improper home care: lack of light, moisture or nitrogen, direct sunlight (burns), freezing or chlorosis.
Why do anthurium leaves dry?
Leaf plates begin to dry out due to low air humidity, insufficient watering, spraying and rubbing the leaves, pests (aphids) and diseases (anthracnose).
Why do leaf tips dry?
Low air humidity or too heavy soil and the roots lack oxygen.
Why do the leaves turn black?
Direct sunlight (burns), too dry air, low or high temperatures, drafts, high calcium concentration (limescale inside the pot), or root rot from stagnant water.
Rust on the leaves
In most cases, this is not a fungal disease, but the consequences of frostbite or excessively high temperatures in the room.
Leaves turn pale
Leaves turn pale when the air temperature drops below 10 ° C.
Brown spots on the leaves of anthurium: causes
Brown specks (dots) or rather large dried (dead) areas of tissue on the leaves appear due to too low temperature. Large brown spots often appear due to lack of nutrients.
Other reasons: mealybug or aphids (inspect the stem and the underside of the leaves), waterlogging of the potting mix, unsuitable soil, watering with cold or hard water, hypothermia of the roots or septoria.
Frozen Anthurium Leaves
Brownish yellow spots
If small punctures (yellow spots) are visible in the lumen of the leaf, then most likely the flower was attacked by a spider mite. If the plant suffers from hypothermia, transfer to a warmer place.
If the size of the leaves of anthurium is noticeably different and they have large yellow spots, then, most likely, improper feeding.
What if the anthurium flowers become small?
Old flower. If the trunk is bare, and the flowers and leaves have become small and pale, then rejuvenation is required to restore decorativeness.
If small young leaves grow and there are large yellow spots on them, then the reason may be a lack (wrong soil) or excess fertilizer.
And if the leaves are small and dry - watering with hard water or dry indoor air.
In the vast majority of cases, the cause of problems lies in improper care, but sometimes the leaves can turn yellow, fall off and dry out due to diseases.
The causative agents are fungi from several genera (Colletotrichum, Gloeosporium or Kabatiella), therefore, the affected plant may look different. In most cases in anthurium, anthracnose spreads from the central vein to the edges. The sheet dries, curls, becomes thinner and becomes brittle and dry.
The disease develops faster with high air humidity (from 80%) and high air temperatures (from 22 degrees Celsius). The fungus can remain in seeds and compost, and move when irrigated in water.
On the leaves, gray-brown or rusty spots of various shapes with a yellow edging are formed, which gradually increase in size. The disease develops more actively with stagnant water, lack of sunlight and nitrogen.
Anthracnose and septoria in anthurium
Treatment of anthracnose and septoria
Put the flower "male happiness" in a separate place, remove and burn the affected diseased leaf plates and treat the flower 2-3 times with copper-containing fungicides.
We indicate the hazard class and the active substance: "Abiga-Peak" (3, copper oxychloride), "Bordeaux mixture" (2, calcium hydroxide and copper sulfate), "Copper sulfate" (3, copper sulfate), "Ordan" (3, cymoxanil and copper oxychloride), "Copper oxychloride" (HOM, 0.5% solution), or others.
Other rarer diseases
Root and stem rot. The disease develops due to improper watering: too often or cold water (aggravated by unsuitable soil and lack of drainage, especially in winter, when the roots can freeze due to stagnant water). Only an immediate transplant can save "male happiness".
Fusarium. The leaves turn yellow, turn black and quickly fall off, and a pink-gray bloom near the root collar. The warmer and higher the humidity, the faster the disease spreads.
Chlorosis. The disease causes a violation of chlorophyll synthesis due to a lack of magnesium and iron. The leaf blade turns yellow and the veins are still green. Watering with soft and once every two weeks acidified water and timely feeding.
ADDITIONS TO THE ARTICLE:
We wish you to find the cause and eliminate the problem with the leaves of the anthurium, and receive only pleasant emotions from the flower!
Eggplant in a greenhouse
In conclusion, I would like to say, do not neglect the advice of experienced gardeners, follow the cultivation technology. To make it easier for you to decide on the treatment of the plant, we will combine the main reasons why the leaves turn yellow and fall into the table.
|Cause||How does it affect eggplant|
|Water scarcity, low temperatures, problems with the root system.||The leaf curls and turns pale.|
|Lack of macronutrients (nitrogen, potassium, calcium, phosphorus)||Leaves at the bottom of the bush turn yellow|
|Lack of trace elements (manganese, sulfur, boron, iron and others)||The tops of the plant turn yellow|
|Diseases.||Various spots on the leaves|
|Root system problem||Foliage withering.|
Causes of yellowing of eggplant leaves and their treatment
Follow our advice and enjoy growing your eggplant.