Can azaleas be fertilized during their blooming period? When should azaleas be fertilized?

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1. Can I apply fertilizer?

2. Fertilization time

Rhododendrons should not be fertilized during the flowering period. The absorption of fertilizer is not large during the flowering period. Fertilization will increase the concentration of fertilizer in the soil and cause damage to the roots. In addition, the flowering period will be shortened and the flower buds will fall off. Fertilization time is generally in spring and autumn, which is its growth period and requires supplementary nutrients. Nitrogen fertilizer can be added after flowering in summer, but it is not suitable to fertilize during the dormant period in winter.

1. Can I apply fertilizer?

Do not apply fertilizer to azaleas during the flowering period. Before flowering, azaleas have accumulated enough nutrients. If you continue to fertilize, the plants may not absorb it. At this time, the accumulation of fertilizer may damage the roots. It will also cause the flowering period to be shortened, unopened flower buds to fall off, etc.

2. Fertilization time

1 , Spring: Spring is the growth period of rhododendrons and an important period for flowering. At this time, you should choose thin cake fertilizer and water for fertilization, which can provide rich nutrients. At the same time, phosphorus and potassium fertilizers should be applied before flowering, which can make the flowers larger and more numerous.

2. Summer: In summer, azaleas will enter a semi-dormant state. , it is not suitable to fertilize at this time, but some nitrogen fertilizer should be added in time after flowering, which can effectively increase the nutrients lost due to flowering.

3. Autumn: Autumn is the second growth period of azaleas, and it is also the stage of flower bud differentiation. At this time, a compound fertilizer based on phosphorus and potassium should be used for fertilization. Whether the fertilization is sufficient will determine the flowering situation in the second year. Of course, the fertilizer should not be too thick and should be applied every 7 days. The fertilizer must be watered and diluted the next day after application.

4. Winter: Low temperatures in winter will also enter the dormant period. So it is not suitable to fertilize. But it should be applied once before winter to help it survive the winter safely.

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