What is the best fertilizer for sunflowers?

Sunflower fertilization time

Sunflowers require sufficient fertilizer during their growth period, especially from disk formation to flowering period. Phosphorus fertilizer can be applied from seedling emergence to disk formation period, nitrogen fertilizer can be applied from disk formation to the end of flowering period, and potassium fertilizer can be applied from disk formation to wax maturity period.

Before planting, the sunflower should be given enough base fertilizer. During its growing period, it should be fertilized once every 20 days.

In addition, top dressing should be done appropriately according to the growth of the sunflower, but top dressing is generally concentrated in the period from budding to flowering.

What fertilizer is good for sunflowers

When planting and repotting sunflowers, applying organic fertilizers, such as pig manure and chicken manure, and increasing the amount of potassium fertilizer can increase its yield. When applying base fertilizer, you can also use nitrogen, phosphorus and potassium chemical fertilizers to meet the demand for fast-acting nutrients during the germination period, and also facilitate flowering during the mid- and late flowering period.

Sunflower fertilization method

When planting sunflowers, use organic fertilizer as the main fertilizer and use chemical fertilizer as little as possible. Seed fertilizer can be applied after the seeds germinate, mainly calcium phosphate and a small amount of urea. During the vigorous growth period, appropriate amount of topdressing is needed, mainly nitrogen and potassium fertilizers, such as urea, potassium chloride or decomposed human feces, wood ash, etc., and fertilizer can also be sprayed on the leaves.

Sunflower fertilization precautions

When fertilizing sunflowers, be sure to use fertilizers with a balanced nitrogen, phosphorus and potassium content. Do not sprinkle it on the stems. Fertilize in a timely manner and do not fertilize at intervals of too long. After fertilizing, it usually takes two days for the fertilizer to take effect.