What is the best fertilizer for azalea

Azalea fertilization time

When planting azalea, if base fertilizer is applied, then generally no fertilizer is needed for 1-2 years. If it is cultivated for 3-5 years, a thin cake fertilizer water can be applied once every 15 days during its vigorous growth period.

Azalea can be fertilized appropriately according to its growth, mainly liquid fertilizer and foliar fertilizer.

What fertilizer to use for azalea

When planting or repotting azaleas, you can apply base fertilizer and choose a compound fertilizer with a balanced content of nitrogen, phosphorus and potassium to facilitate its growth. Apply phosphorus fertilizer and a small amount of potassium fertilizer before flowering to improve the resistance of the plant and increase the number of flowers. Nitrogen fertilizer should be added immediately after the flowers fade to meet the nutrients lacking in the plant, which is beneficial to its growth.

Azalea fertilization method

1. Growth period: During the growth period of azalea, diluted decomposed cake fertilizer can be applied every 7-10 days. In autumn, phosphorus and potassium fertilizers should be added during the flower bud differentiation and bud formation period. Water can be poured once on the second day after fertilization.

2. Flowering period: Phosphorus fertilizer can be applied one month before azalea blooms. After the flowers bloom, fertilizer mainly composed of phosphorus, a combination of nitrogen and phosphorus should be applied, and the concentration should not be too high.

Notes on fertilizing azalea

When fertilizing azalea, follow the principle of applying thin fertilizers frequently. The leaves should not be contaminated. If they are contaminated, they need to be rinsed clean in time. It is best to fertilize in the morning or evening when the weather is clear and the soil is dry. Water once the next morning to facilitate root absorption.