Yellow daylily is a perennial plant that is known not only in Russia, but also in many countries of the world. It can be grown not only by experienced gardeners, but also by anyone. Flowers can decorate home gardens, parks and other public places. Sometimes daylily turns yellow, the bush loses its attractiveness, ceases to bloom and completely dries out. What to do in this situation?
How to identify a problem?
Daylily with yellow flowers appeared in Europe more than 300 years ago and the first officially registered flower was in England in 1892. Since then, breeders have been able to develop more than 80,000 new varieties.
Yellow daylily
Basically daylilies are unpretentious and they do not require careful maintenance. Only some of the hybrids that were bred by microclonal propagation are very moody. In order to avoid problems with the shrub, he needs to carefully select the composition of the soil, observe the temperature regime and the amount of watering. The seller, as a rule, reports all these nuances in the description of the flower.
Daylily turns yellow what to do? The following rules must be observed:
- the landing site should be well-lit;
- the soil is fertile, loose and with a neutral level of acidity;
- watering must be carried out on heated in the sun or spring water;
- Before the beginning of the growing season, the plant is fed with nitrogen fertilizers, during flowering - potassium-phosphorus-nitrogen, and after flowering - potassium-phosphorus.
To maintain the beauty of daylily it is necessary to ensure that pests do not settle on the bushes, and the roots do not rot from heavy watering.
It's important to know! Daylily does not easily tolerate viral and fungal infections. Getting rid of them can be very difficult.
Shrub disease
Excess or lack of moisture
Many gardeners have a question: why do the daylily leaves turn yellow and what to do in this case? Often this trouble arises due to an excess of moisture, and in order to avoid this, first of all, it is necessary to determine the place of planting of the plant. The main thing is that it be planted on a site where the water level is below 1 meter, because the roots of the bush can penetrate to a depth of 50 cm.
Watering daylilies is necessary only when it is visible that the earth around it has dried up. If a little loosening of the ground, it is noticeable that it is dry more than 3 cm in depth - this is a signal for irrigation.
Increased humidity can also lead to yellowness of leaves, especially when the air temperature drops to +18 ℃, which in turn provokes rotting of the root system. During a period of high humidity, slugs can also appear that eat up the leaves of the plant and damage the buds.
If there is not enough moisture, the ends of the leaves begin to dry out, because the roots cannot supply the necessary amount of liquid to the top of the plant. Cells gradually begin to lose moisture and the process of photosynthesis is inhibited.
Incorrect feeding
Why do daylilies turn yellow leaf tips? This can happen due to improper feeding. It is very important to properly feed him in the care of the shrub, because further flowering will depend on this. The main thing is not to overdo it, because an excess of nitrogen fertilizer will cause the bush to grow greatly, and this will negatively affect the number of peduncles and their size.
Plant care
If the soil for planting shrubs is too clay, then it is imperative to dilute it with sand, peat, as well as drainage materials. If the soil is acidic - it is worth making lime, if not - there is enough mineral fertilizer and ash.
A frequent reason for yellowing of the lower leaves of daylily is a lack of magnesium, as a result of which the problem gradually spreads throughout the plant. Leaves become sluggish, fragile and necrotic areas will be visible.
Important! Before starting planting daylily it is recommended to pass the soil for analysis, because a lack of boron and iron in it will lead to yellowing of the leaves.
Diseases
Daylily diseases are rare. Basically daylily - a plant without problems. It is only necessary to timely remove the inflorescences that have withered, because bacteria and various pests are planted on them.
Root rot
In this case, the leaves begin to dry, an unpleasant smell appears, and the roots themselves, if they are dug up, become soft. When such symptoms appear, the plant must be dug up and held for 15 minutes in a solution of potassium permanganate, and then dried in the sun.
Decay of the root system of the bush
Plant strip
A fungal infection occurs. Leaves become striped and brown spots appear. The plant itself does not die, but the leaves begin to fall. In this case, the bush must be treated with a 0.2% solution of baseazole.
The appearance of rust
Blotches with yellow powder appear on the leaves. As a result, the leaves fall and flowering stops.
Chlorosis
If the daylily turned yellow - what every gardener knows what to do in this case. Often this problem boils down to a lack of chlorophyll. Yellowness can occur only in one place, or spread throughout the foliage. As a result of the disease, the plant completely dies, but do not confuse chlorosis with the natural death of leaves.
Among the main causes of chlorosis are:
- the soil is oversaturated with lime with a lack of iron;
- malnutrition of the root system;
- excess or lack of moisture;
- toxicity of herbicides.
Fusarium
Brown spots are visible on the stem of the plant, the upper leaves begin to blacken. Since the disease is fatal to the plant, it cannot be treated and if a painful shrub has been detected, it must be removed immediately from the site.
Gray rot
It occurs most often in rainy weather, when there is an excess of moisture in the soil. The second reason is the presence of weeds near the daylily. Gray rot begins to appear with leaves, which are first covered with dark yellow spots, and then brown.
Common Disease - Gray Rot
Additional Information! If the air humidity is high, then mold appears on the surface of the formed spot.
If a disease is detected, it is urgent to begin to deal with the problem by removing the affected leaves and treating the shrub with 1% Bordeaux liquid (or with a solution of fundazole).
Rotten mold
It affects the daylily bulb, as a result, the leaf begins to turn yellow immediately. The main sign of the presence of the disease is yellowing of the top of the bush and the gradual drying of the stem. In this case, all plants are removed from the site.
Pests
Before proceeding with the treatment of the plant, it is necessary to identify the cause of the daylily disease and begin to fight them. Pests pose a great danger to the bush, among which onion mites, thrips, aphids, and mosquitoes are most common.
To get rid of them, they use insecticides that enter their body while eating plant leaves. Gardeners recommend the use of funds confidor, zenith, actar, commander.
How to prevent yellowing and drying out
It is understandable why the leaves on daylilies turn yellow, but how to prevent the appearance of a problem? Everything is very simple here, the main thing is to regularly inspect the plant, monitor its appearance, feed on time and carry out preventive maintenance in the spring during the growing season and flowering.
Important! It should be moderately watered daylily in the summer, preventing waterlogging of the soil.
Daylilies decorate not only personal plots, but also parks, gardens and other places. If the plant begins to turn yellow profusely - this is the first alarming bell to take measures to identify the cause of the problem and get rid of it.
