Petunia diseases can have a different manifestation and occur for various reasons. You can deal with many of them with the simplest methods and means. Then the plant will bloom magnificently and delight the eyes with lush green leaves.
Petunia diseases and their treatment
To decorate the space along the garden path, many gardeners plant petunias. Green bushes bloom beautifully and are easy to care for. But often the plant is affected by diverse diseases and pests.
Petunias in the garden
Note! Often the cause of problems with the aerial or root part is improper care.
The list of problems is significant, which confuses inexperienced gardeners. If you determine the main problem of the trouble, then the solution will appear by itself.
Why petunia leaves turn yellow: what to do
A flower planted on a street flower bed or in a flower pot often suffers from adverse climatic conditions or external factors. There are several reasons why the leaves of the petunia turn yellow, and what to do with this to restore the normal state:
- lack of lighting can lead to discoloration of the leaves and their fading. You need to put a flowerpot on an open area. For planting, you should also choose open areas;
- a yellow leaf may be a sign of aphids. It is necessary to process the aerial part of the plant with a special tool;
- if the upper leaves turn yellow, then the soil lacks nutrients. It is imperative to make fertilizers.
Yellow leaves
There are several more options why petunia turns yellow, but they are associated with specific diseases of the plant.
Why petunia does not bloom
Flower growers appreciate petunias for the lush and continuous flowering that adorns any flower bed. Sometimes the bush reaches the desired size, but there are no flowers, then you need to diagnose the problem, and there may be several.
Reasons why petunia does not bloom during the growing season:
- Incorrect temperature conditions. If cold nights or several rainy days are foreseen, it is better to cover the bush with a plastic cap. During the heat, you can equip a small shadow;
- new flowers may not bloom if you do not remove already withered or dried buds in a timely manner. The process of such cleaning takes a lot of time, but will definitely provide good flowering;
- improper top dressing can also affect the flowering of petunias: buds will not form under the influence of many trace elements.
Not blooming specimens
Note! A variety that blooms only after a year may come across.
Why does petunia dry and what to do
A flower can dry for several reasons:
- oversupply (in cold weather) or lack of moisture (in hot weather);
- often flowers of this format are planted in flowerpots and placed in the house, on the balcony. Lack of fresh air is the cause of the disease;
- use of hard water during irrigation;
- sudden changes in temperature.
Gradual drying
Diverse diseases and pests can lead to damage to the root system and, as a result, the drying of the stem. The only solution in this case is to transplant the flower into a new flower pot.
Why do petunias have sticky leaves: what to do
Some varieties exhibit excessive stickiness of the leaves, which is not a threat. But there are other reasons why the petunia has sticky leaves, what to do with it, you need to decide immediately. If brown or gray spots are present under the leaves, the plant has aphid. Immediately you need to spray the bush with a means to combat this type of pest.
Aphids on flower
Why petunia dries, and how to save a flower
The cause of complete drying of the plant may be rotting of the root system or gray rot. There is only one way to reanimate a flower - transplant a bush to another place, a pot, a cache-pot, having previously cut off damaged processes of roots.
How is chlorosis of petunia manifested
This disease is very dangerous and requires immediate elimination. Petunia iron chlorosis is manifested as follows:
- the leaves themselves turn yellow, and the veins remain green;
- the edges of the plates curl inward;
- all parts of the aboveground part change shape and size.
Manifestation of chlorosis
If chlorosis is not treated, the plant will die. The most effective way of fighting is to transplant into a new soil or fertilize with fertilizers, which include iron.
Powdery mildew on petunias: how to fight
There can be several sources of infection: spores from the upper layers of the soil, contaminated water, diseased plants nearby. The disease is activated rapidly. Powdery mildew on petunia appears as follows:
- fluffy plaque that resembles flour;
- during the period of exacerbation, cloudy droplets of liquid resembling dew are formed on the leaves;
- then a light coating turns into a dense white crust.
For your information! The disease moves from bottom to top, so it turns out to notice the problem when it reaches the middle tiers of the leaves.
Powdery mildew
If the plant is not treated for powdery mildew, the bush will rot. First you need to remove heavily damaged parts of the aerial parts, the topsoil, then spray with a special tool.
Fusarium Petunias
Such a disease is provoked by blockage of the vessels of the plant with a toxic fungus. Symptoms of fusarium have the following description:
- first the lower part of the bush turns yellow;
- then the stalk fades;
- The next step is decay.
As a result, metabolic processes and the principle of development of seeds, plants, buds are violated. Fusarium disease requires a comprehensive treatment: soil change, spraying with therapeutic agents, watering.
Common Causes of Disease
Any disease of petunia is the result of not only improper care, but also a negative impact from the outside. The most common causes of illness are:
- violation of the temperature regime;
- wrong watering mode;
- lack of iron in the soil.
Healthy flower examples
So that the plant is not exposed to diseases of various types, you need to know the basic rules for caring for a flower.
Temperature violation
The plant will not be able to bloom if the temperature regime is violated. An ideal interval for the normal development of a flower is from 20 ° C to 30 ° C.
Important! Initially, it is worth choosing such a site on the flowerbed so that it is well lit to ensure a normal temperature.
If the weather is rainy and cloudy all summer, then the greenery of the bush will lighten, and the buds will not form at all. When the summer is too hot, the flowers will dry out and fall off at the very beginning.
Watering violation
If the bush begins to change color, shape or fade, then you need to establish a watering regime. The first sign of improper irrigation is the yellowing of the aerial parts. What can not be done:
- Use ice or cold water for irrigation. It is advisable to use only settled;
- fill the flower with water if the topsoil has not yet dried out. After irrigation, it is necessary to loosen the top layer of the earth;
- young seedlings will die immediately, if you pour it from a bucket, it is better to spray it.
Watering Rules
Watering becomes an easy task when you consider these three basic anti-rules.
Iron deficiency
If the colors of the bush become more dull, then it is imperative to introduce iron into the soil. Such an element is vital for petunia. It is necessary to feed the flower by spraying or watering.
Diseases associated with excess moisture
It is not difficult to grow a flower if you establish a watering regime. Then there will be no problems with diseases that are associated with excess moisture:
- rotting of the root system;
- leaves of petunia turn yellow from an excess of moisture;
- the bush begins to fade and discard buds and leaves.
Watering Disease
Having established watering, you can get rid of negative manifestations.
Prevention and remedies for diseases
Petunia diseases and the fight against them are determined by the rules of care and growth. In order not to provoke the development of diseases, preventive measures must be taken. You can make a pest control yourself, folk recipes are quite effective.
How to treat folk remedies
It’s not necessary to buy funds in specialized stores; you can use improvised products. You can fight diseases with the help of folk remedies:
- infusion of garlic (dissolve 20 g of garlic in 1 liter of water), which need to spray the bush. He will save from various pests;
- soda ash (20 g) + dishwashing detergent (5 g) + water (5 l). The resulting composition to process the soil and bush;
- mustard powder (20 g) + 5 l of water. The product is sprayed onto the plant using a spray gun.
Variant folk remedy for pests
There are a huge number of such recipes, which are effective and method of application.
Prevention and protection of petunias from pests and diseases
The plant attracts many pests with its aroma and soft texture of the aerial parts of the bush. Most popular petunia pests:
- aphids that deform leaves;
- whitefly, which completely devours the bush;
- spider mite entangling the stem of the plant;
- thrips leaving gray strokes on green plates.
Especially often pests attack specimens that grow in the open ground. Therefore, the principles of control and prevention are determined by specific actions. It is necessary to properly irrigate, organize a normal temperature regime and produce periodic top dressing.
Proper care
Before planting on the flowerbed, it is imperative to sanitize the land, it is imperative to apply fertilizers in certain quantities. A properly selected site for planting is a guarantee of normal growth and development. You also need to organize good lighting. It is advisable to trim the extra processes.
The streak of failure for gardeners is the deterioration of colors that have taken so long to take care of. It is especially offensive when you wait for the beautiful flowering of petunias, which have so many hopes, and it does not happen. Immediately you need to look for the cause of the disease or the appearance of pests, and then begin treatment.
