The method of potted Petunia on Family balcony what if the leaves of Petunia turn yellow

Planting flowers on the balcony is something that most people like to do, especially for people living in cities. Raising green plants in families can beautify the family environment and improve air quality. Petunia not only has a beautiful appearance, but also has some value in other aspects.

The method of potted Petunia on Family balcony

1. Maintenance introduction

In the southern region, petunia can be planted in all seasons and only some seeds are needed, while in the north it is mainly sown in spring, which is more appropriate around June. Sowing is very simple, the basin soil had better be loose, well-drained sandy soil, after watering moist, the seeds are scattered evenly, do not cover the soil, because its seeds are too small, and then they should be kept moist and watered by soaking pots, and the seeds are easily washed away by flood. After that, it is necessary to give a warm environment (above 20 degrees), keep it moist, see the buds in a week, begin to see light slowly, and give thin fertilizer (nitrogen fertilizer) when it grows to 4 true leaves.

2. Late maintenance

Transplanting can wait for Petunia to grow 4 or 6 true leaves, and you can choose a basin of about 15 cm for maintenance, and the caliber should not be too large, otherwise watering will be difficult to control moisture, easy to accumulate water and rot roots, and cultivation will fail. Transplanting does not need complete shading, it prefers sunlight, give appropriate scattered light, slowly increase light, transplant temperature at about 20 degrees, not less than 15 degrees, be careful not to be frozen on the line. After the maintenance is relatively simple, watering is not dry, watering is the principle of thorough watering. If the thin fertilizer is applied frequently, the fertilizer with high nitrogen and potassium content and low phosphorus content can be selected as nitrogen fertilizer and urea as nitrogen fertilizer and nitrogen, phosphorus and potassium as compound fertilizer. Pick the heart once in summer to promote branching.

What if the leaves of Petunia turn yellow?

1. Soil and water

The soil and water suitable for the growth of petunia is mainly slightly acidic, on the contrary, in alkaline soil and water, there is a lack of soluble iron and other elements that can be absorbed and utilized by petunia, and the leaves will turn yellow if they are not absorbed for a long time. Therefore, we should pay attention to the selection of slightly acidic soil and water when planting, and often irrigate alum fertilizer and water during the growth period.

2. Humidity

The abnormal dryness of indoor air is also an important reason for the dryness of leaf tip or scorched leaf edge of petunia. At this time, water spraying, plastic film cover and other methods can be used to improve the humidity of indoor air.

3. Lighting

If the light is too weak, if the petunia grows in the shade without light for a long time, the branches and leaves will turn yellow, because the petunia itself likes yang and avoids yin. (too much light) of course, it is also wrong to put petunia in high temperature and be exposed to strong light, which can easily lead to scorched leaf tip and leaf edge, or leaf yellow shedding. At this point, it should be moved to a well-ventilated and cool place for protection.

4. Fertilization

Excessive fertilization will make the new leaves of Petunia too thick, and most of the surface will be uneven, and the old leaves will be dry-pointed and scorched yellow, so we must stop fertilization immediately and let the excess fertilizer be lost by increasing the amount of water exchange. or immediately use the inverted pot method, wash the bulb root and then replant it into the original pot.

If the petunia is short of nitrogen fertilizer or has not changed the basin and water for a long time, it will cause the lack of nitrogen and other nutrient elements in the water, resulting in thin and yellow leaves and branches. It is necessary to gradually apply dilute mature liquid fertilizer or compound flower fertilizer in the new culture water to make timely improvement.

5. Temperature

If the temperature is too low and the room temperature is too low in winter, the threat of cold injury will increase. Petunia is easy to be affected by low temperature and its leaves will turn yellow, and the plant will wither and die seriously. If the temperature is too high, if the indoor temperature is too high, it will enhance the transpiration of the plant, resulting in a shortage of water and nutrients in the roots, and it will also make the leaves yellow.

The habits of Petunia

Petunia belongs to long sunshine plants. Under the premise of plenty of sunshine, it takes more than 100 days from sowing to flowering.

Petunia is not cold-resistant and afraid of rain and waterlogging, and the most suitable temperature for growth is 13-18 ℃.

In winter, the most suitable temperature for growth of Petunia is 4-10 ℃, and it will stop growing when it is below 4 ℃.

In summer, petunia can withstand a high temperature of more than 35 ℃, and it needs plenty of water to grow vigorously.

During the rainy season, it is necessary to avoid excessive growth of stems and leaves caused by wet soil, or even death of rotting roots caused by long-term stagnant water.

Medicinal value of Petunia

The seeds of morning glory, also known as morning glory, black ugliness and white ugliness, can be used medicinally, with good efficacy in purging, diuresis, detumescence, deworming, and in the treatment of edema in chronic glomerulonephritis, facial acne and freckles have a good treatment effect.

The seed of petunia is a very good medicine, which can help the human body to treat some diseases and also have a cosmetic effect, in short, planting petunia can get a better return as long as it is maintained in a normal way, so interested friends can consider it!