Why do the roots of sunflowers rot? (How to grow them so they don't rot or burst the pot)

Why do the roots of my own sunflowers rot?

1. Overwatering

The leaves and stems of sunflowers are fleshy and drought-resistant. Sunflowers are also known as "sun-resistant". They are not afraid of high temperatures, but they are afraid of damp soil. If you water them too much, the roots of sunflowers are prone to suffocation and root rot. Relatively dry soil is more conducive to growth .

【Processing method】

   If the sunflowers have slight root rot, we can stop watering them and place them in a well-ventilated and well-lit place so that they can grow again without root rot.

If the sunflower has rotted, we can pinch off the rotten part of the sunflower, then prepare loose, fertile, well-drained sandy soil, and then re-cut it. The vitality of the sunflower will be very tenacious.

2. High temperature and high humidity

When growing sunflowers, if they are grown in a high temperature and high humidity environment, the ventilation environment is not good . Or if the water is not drained in time after a heavy rain, the roots of the sunflowers will rot due to water accumulation and long-term wet soil .

If we grow sunflowers in a high temperature and high humidity environment, and the ventilation environment is not good, and there is no timely drainage after heavy rain, the sunflowers will rot due to accumulated water and wet soil.

【Measures】

Usually when planting sunflowers, we need to keep them in a ventilated place to prevent them from not being drained in time after heavy rain. When watering, we can wait for the soil in the sunflower pot to dry before watering. If the roots have rotted, we can also cut them again .

How to grow sunflowers with high survival rate and full bloom

①Sandy potting soil

Sunflowers like sandy soil, humus, fertile and well-drained soil. When planting sunflowers, it is best to use 3 parts of farmland, 3 parts of yellow sand and 3 parts of humus soil. Then add a certain amount of honeycomb coal powder.

② Watering

Sunflowers have good drought tolerance. When watering in all seasons, you must follow the principle of "don't water unless the soil is dry, and water thoroughly when you do." Don't water too much. Dry soil is more conducive to the growth of sunflowers. There will be more flowers.

③ Fertilization

Sunflowers rely on soil nutrients and can grow vigorously without fertilizer. But in order to make the sunflowers bloom more and brighter, we can spray dilute potassium dihydrogen phosphate on the branches and leaves every 15 days before the sunflowers bloom, which can promote flowering and prolong the flowering period.

④ Plenty of sunshine

Sunflowers are like plenty of sunshine. When growing sunflowers, they must be placed in a well-ventilated and well-lit place, and the soil should be allowed to alternate between dry and wet quickly. The root system will grow well and absorb nutrients better. The flowers will bloom in large quantities and be large in the later stage.

⑤ Pruning

When the sunflower grows up, we need to top it frequently so that it can grow more new branches and then bloom more flowers. If you top a sunflower frequently, you can also make it bloom out of the pot.