How to fertilize sunflowers? What fertilizer is best?

1. Fertilization time

Sunflowers have a relatively high demand for fertilizer. First of all, when repotting, you need to use base fertilizer. Then, when it enters the growth stage, due to its vigorous growth, it requires topdressing. After the budding period, it is especially important to apply some foliar fertilizer.

2. Fertilizer Types

The base fertilizer used is mainly some organic fertilizer, such as some animal manure. The fertilizer used for top dressing mainly contains nitrogen-rich fertilizers. Potassium is also important, such as urea, wood ash, etc. Foliar fertilizers can be made with solutions of zinc, copper, manganese, etc.

3. Fertilization method

1. When using base fertilizer, just mix it evenly with the substrate. If urea is used for top dressing, it can be applied after diluting it with water; if wood ash is used, some small holes can be dug on the surface of the soil, and then the fertilizer can be applied in these small holes. Foliar fertilizers are applied directly to the surface of the leaves.

2. When applying top dressing, you need to pay attention to the interval between fertilization, which can be controlled at about two weeks, and not too frequent.

IV. Precautions

When the temperature is too high or too low, the sunflower may enter a dormant stage. At this time, you can stop fertilizing it. Applying too much fertilizer may cause harm to it.