Quite often, anxiety causes yellowing of the leaves or the stem. Most likely, this is natural because the aging. Thus only start yellowing lower leaves. Also change the color begins to stalk after flowering period. In this case, the sheets after drying very carefully removed, as it may hide dormant buds, they can be easily damaged. After the sheet is completely dry, it will easily separate from the plant. Yellow and withered stems are clipped with scissors or a sharp knife.
Yellowing of Orchid can from change of place of "residence". They are very exacting to light, temperature and humidity regime. Changing any of these components of care may temporarily lead to plant diseases. To help him acclimate, they should try to create the most favorable conditions. For each type of Orchid. With proper care the plant will quickly regain its beauty.
A fairly common cause of yellowing of plants is incorrect watering. And most often the plant is watered excessively. In this case, the roots can start to rot and the plant to turn yellow. So it is not lost, it is necessary to dry the roots for some time and to touch the substrate, which can also rot. Underfilling Orchid is much rarer, as they can easily do without moisture for long periods of time.
It is very important not to overfeed orchids. Fertilizer liquid fertilizer should be no more than once a week during flowering. Now release fertilizer specially for orchids. Add them to your water when watering.
Orchids are very picky about the lighting. They can not tolerate direct sun, but the lack of lighting had a most disastrous effect on their appearance. Let's see what the leaf started to turn yellow. If it is far away from the window, it really is in the lack of sunlight. When growing orchids on the North side should take care of the lighting, and on the South about the blackout. Make sure to avoid drafts. Although orchids love fresh air, the cold wind has a negative impact on their health.
On the window of the Orchid lies in wait for another enemy. Is the hot air from the batteries. Besides the fact that it dries up the roots, it also reduces the humidity around the plants. To combat this, placed next to containers with water or using a humidifier.
Advice 2: Why yellow palm
The most common cause of yellowing is a violation of watering or some sort of problem with the root system. If you last made a change to your palms many years ago, it is possible that the leaf colour change – a signal for help. Indeed, over time the plant becomes crowded in the small pot, the roots take up almost all free space and suffer from lack of moisture and nutrients. No matter how hard you try to improve the situation by regular fertilizing and watering – all in vain. The fact that over time the soil in the pot is exhausted and also needs full or partial replacement. If your palm is under three years of age, you must replant every year. If she's five or more – valid transplant every three years.
And how do you water your beauty? Once a week or a little rare, but abundant? For palm is of great importance uniform moistening of the entire soil ball, so if you decide to water, do it properly. Frequent but small introduction of liquid moistened the soil to the surface, leaving the main roots without access to water. But it is important to observe a measure and to fill the unhappy plant to soil rot. Remember that an excessive amount of moisture out of the ground displaces the air, making it heavy and unsuitable for plants.
Pay attention to what the leaves turn yellow. If misfortune happened with the entire plant, probably lacks nutrients. Feed your palm with complex mineral fertilizer, which is necessarily present nitrogen and phosphorus. If you see that the lower leaves turn yellow, this may be normal age-related changes, which promises absolutely nothing. Trees with age, gradually turn yellow and die off of lower leaves, but the stem becomes more robust, tall and handsome. To determine whether the yellowing of age or not, can sometimes only an experienced specialist, so don't forget about regular feeding. In any case, the damage from your palm will not.
On hot days in summer and winter when the air is parched Central heating, palm trees require spraying. If you notice that the tips of the leaves regularly turn yellow and then die off is a symptom of lack of moisture. Do not forget twice a day to spray the palm with fine spray or wipe it with a damp sponge. Also in the summer be sure to earthen room was constantly damp.
Remember that the yellowing may be caused by pest, so inspect the leaves for presence of spider mites or scale insects and, if necessary, guide appropriate treatment. Following these simple care tips, you will be able to restore the natural color of your palm and enjoy its unusual beauty, and tropical luxury.
Advice 3: Why do ficus turn yellow and the leaves fall
The leaves of ficus may drop in the fall and winter is a natural process, the number of fallen leaves is usually 10-20% of the total green mass. Healthy plants are fading, only the lower leaves.
Change in the usual conditions
Ficus begins to drop leaves due to sudden temperature changes, reducing light transfer from a warm room to a cooler.
As ficus do not like change, it is advisable to choose for him a certain place in the future not to disturb the plant.
Temperature and lighting
To prevent the disease of rubber plants, they should not be put on the marble and tiled floors, window sills and cold because the roots of these plants sensitive to the cold. In the winter, make sure that your pet is not in contact with the window glass.
The best temperature for ficus Benjamin is an 18 – 25oC, for variegated species require warmer conditions. When the temperature is too high the plant begins to suffer, he begins to wither the leaves.
As the ficus tree likes light, you should not keep it in a shaded place, but under direct sunlight the plant can't be put. Best for your green friend will fit a spacious bright room with no drafts.
To turn yellow and fall off the leaves of the ficus can due to improper watering. When excessive moisture the roots of plants begin to rot, which leads first to his disease, and then death.
If your plant has suffered from overwatering, let the soil dry for a half to two weeks. During this time, the condition of the ficus should be fine. If he's not getting better, you need to replant the flower in different soil, eliminate the decayed roots by placing the root system in a container with a weak solution of potassium permanganate.
Pests and diseases
Fall off the leaves of rubber plants from fungal diseases and pests – mites, thrips, scale insects, aphids and mealybug. Carefully inspect your green friend, if you find it on the web, damaging themselves and insects, is urgently treat the plant with special preparations.
Young leaves often start to turn yellow due to lack of soil iron. In such cases the plants must be fed Ferrovia or chelate iron.
Feed ficus should be in the growth period, i.e. from March to September. The day before the procedure the plant should be watered so that the fertiliser does not burn the root system.
Advice 4: Why do onions turn yellow and dry leaves?
The symptoms of the disease
Onion leaves lose their emerald color, becoming more settle, with well-marked yellow at the tops. The shape of the pen is flat and tape. The top leaves often take a curved direction downwards. In wet weather the diseased green leaves are covered with grayish or grayish-purple powdery coating of fungal spores that are wind and rain learn the new planting.
The leaves continue to turn yellow and wither. Plant growth is suspended. Fungal infection continues its "path" in the onion. Planted onion or onion next year in the garden, give the new young leaves, which are "fetch" the same fungus.
Sources of infection
"Home" for the disease are affected perennial rhizomes bows, bulbs, seeds and residues.
What to do?
You mustbe obligate rotation. Planting onion return to the problem of beds in 2-3 years.
Apply manure only under previous culture.
Do not overfeed the plant with nitrogen supplements. Use fertilizers with increased dose of phosphorus. On poor lands nitrogen fertilizer to apply in early growth, in the second half of the vegetation - phosphorus-potassium, which increase disease resistance.
Before planting onions (pearl onion) is useful to make the thermal disinfection. The bow should be warmed at 40-45 ° C during the day. You can soak the onions before planting in solutions of copper sulfate or other fungicides.
At the first sign of the disease bow should be treated with Hom (40g per 10 liters of water) or Ridomil (25 g per 10 liters of water). Through one to two weeks, repeat the treatment.
With the appearance of 3-5 leaves the bow it is possible to prevent spray landing a 3% solution of potassium permanganate every 7-14 days 2-3 times.
To handle the bow for "green" not by any drugs.
Advice 5: Why the Spathiphyllum yellow leaf edges
Why yellow leaves of the Spathiphyllum
Owners are often concerned about appearing on the tips of the leaves of Spathiphyllum small yellowish-brown spots, later they spread to the entire leaf, which then dries up and dies. Causes can be multiple: in addition to some diseases, yellowing leaves can be caused by the entry of plants in preparation for flowering, when all the nutrients from the leaves and roots go into the development of the peduncles, or the period after flowering, when the plant is depleted and needs rebuilding.
Another reason – the process of decay of old leaves, in return for which the plant throws out young shoots; it is possible that this is caused by tight pot and the plant needs a transplant. Incorrect watering or drying clod of earth can also cause discomfort to the plants. Moreover, the yellowing of the tips of the leaves may indicate the need to plant nutrition with phosphorus and nitrogen.
How to help Spathiphyllum
First you need to analyze the cause of the yellowing leaves. If the Spathiphyllum growing in the same container for a long period of time, you should try to replant it in another pot. Thus it is necessary to carefully inspect the root system: healthy roots should be creamy white, if discovered dark brown, rotten roots – you have to cut them, handle the root system in a strong solution of potassium permanganate, and slices of powdered wood ashes.
For a transplant is necessary to use special soil for room flowers which you need to freeze or fry, to get rid of possible pests or diseases. On the bottom of the pot you want to pour large gravel layer 1.5-2 cm for drainage. If the cause yellowing of the leaves was close to the pot, the new capacity should be 3-4 cm longer than the previous one, and the plant itself will be split. When transplanting it is necessary to remove yellow and dried leaves to prevent fungal diseases spray the Spathiphyllum soap-ash solution.
In the future it is necessary to consider the needs of plants to be sprayed with water and fertilizing: during the growing season when watering should be regularly once a month to make a comprehensive fertilizer flower (during flowering fertilizer you need to give more), and to humidify the air around the Spathiphyllum with the spray. Also need to make sure that the plant does not get direct sunlight will cause leaf burn. With proper care Spathiphyllum thank the owners of lush and long flowering, releasing many original stems wrapped in an unusual white blanket.
Advice 6: Why yellow onion feather
- - salt;
- - potassium permanganate;
- - tobacco dust;
- - ash;
- mustard powder;
- - ground Cayenne pepper;
- - fungicide.
Advice 7: Why do Orchid roots to dry
Drying the roots inside the pot
If the roots dry out the inside of the substrate in the conditions of home detention the reason for this can be burns. The roots can even turn black or yellow. Chemical burns often causes improper irrigation water for orchids it should be soft, without impurities. Constant watering with tap water plants harm. With tap water in the substrate fall of salt, which settle inside, gradually they accumulate more and more, and at some point the salt content in the substrate becomes so large that they cause a chemical burn.
To prevent further salinization of the substrate it is necessary to substitute the pot with the plant under warm running water to rinse it. After rinsing the plant a few months it is not necessary to fertilize, and then use the fertilizer only in highly diluted form. Burns of roots can also occur due to high concentrations of fertilizers, and sometimes due to incorrectly selected dosages of growth factors.
Drying of the roots due to lack of moisture
The roots of orchids can wilt from lack of moisture, for example, due to a rare watering in the heat. Those roots that are inside the pot, under such conditions and still get a little bit of moisture is condensation formed from the temperature difference between night and day. But the roots on the outside, suffer more.
Timely action can bring the plant to life, but the process is long. The roots are damaged not very much in a few weeks, and sometimes months to change the old skins and continue to rise. If the Orchid roots were badly damaged when drying, it is necessary to carry out quickening the procedure. The roots should be watered abundantly – so can identify which of them are alive, at least partially, after which all the dead roots removed, and place slices treated with brilliant green. When properly adjusted irrigation and humidity in the room, such problems are rare.
Dried and pruned the roots of orchids tend to grow. Shortened from the root can grow new, quite healthy and strong is easier than the full capacity of the root system.
Advice 8: Why leaves turn yellow orchids
Excessive or insufficient watering can cause yellow leaves orchids
The most simple explanation why yellow leaves of Orchid is the death of old leaves. Some varieties (Cattleya, Phalaenopsis, paphiopedilum) over time, the lower leaf turns yellow and dries up. The orchids of the Dendrobium Nobile varieties can turn yellow or even fall off all the leaves with blooming bulbs. In these cases, the appearance of yellow leaves is due to the natural process of dying back. After the sheet is completely dry, it will fall off, and it can be removed. Optional pre-cut off the leaves starting to turn yellow.
The next reason that Orchid yellow leaves – is excessive watering. The Orchid is a flower resistant, it can withstand a long absence of moisture, and long-term intensive irrigation. However, after a few months of this kind of care the plant will need repairing.
Signs of yellowing leaves Orchid from over-watering:
- the appearance of dark spots on the sheet;
- the leaves lose their elasticity and become loose;
- begin to turn yellow all the leaves top and bottom;
- the trunk of the tree is covered with black spots;
- the flower sits loosely in the pot;
- the roots of the plants blacken or become invisible through the transparent wall of the pot.
If you have these symptoms, you must get a plant from the soil, inspect the roots and, depending on their condition, to carry out reconstruction activities.
Yellow leaves orchids and insufficient moisture. The leaves fade, turn yellow and gradually wither. To evaluate how moist the soil is by using wooden sticks. It must be carefully placed along the walls of the pot. If after a few minutes the stick is damp, then the soil is sufficiently hydrated, but the leaves turn yellow from excess moisture. Experienced lovers of orchids can determine the soil moisture by weight – if the pot is in the hands seems easy, then it's time the plant is watered.
The orchids in transparent pots with proper watering the roots of greenish mother-of-pearl, and the walls do not accumulate condensate.
If the soil is dry, the plant needs water. If the leaves continue to turn yellow, you need to release the Orchid from the ground, evaluate the condition of the roots, if necessary – to transplant and to monitor watering.
The leaves of an Orchid turn yellow and sunburn
Yellow leaves Orchid if the plant in hot weather stands on the South or West side. The sheet gets a sunburn, the area of contact of the rays eventually turn yellow and gradually dry out, but then does not apply. It is necessary to protect the Orchid from direct sunlight.
When the plant is not getting enough light, orchids yellow leaves at the base, and then die. The junction of the leaf stalk may be affected. In this case, the patient sheet must be removed and cut off the top if the stem is black. Cut places can be treated with iodine or green paint, the tools necessary to disinfect.
Other reasons due to which orchids yellow leaves
The orchids needed potassium and iron. The lack of these elements may be another reason leaves turn yellow orchids. In this case, it need fertilizing with iron-containing compounds and potassium. If irrigation is used tap water, using peat the plant will be able to pick up iron from the water.
The lower leaves of an Orchid growing without a substrate, can turn yellow from root burn. This means that the amount of salts and fertilizers significantly exceeded the norm.
Water hardness is also the reason for the appearance of yellow leaves. Gradually the soil will sasalita, iron will not do the plant, the lower leaves, and then everyone else, will begin to turn yellow and fall off. In this case, the soil need to be replaced, the sheets processed by liquid fertilizers. Distilled water should be diluted with tap water in equal proportions.
Proper and timely care of Orchid ensures a healthy, gorgeous bloom.