What to Do When Fruit Trees Bloom Again in Autumn? Causes and Solutions

In recent years, the phenomenon of fruit trees blooming again in autumn has been fairly common, especially in pear orchards and some poorly managed citrus orchards. In addition, some fruit trees such as peach and plum also bloom again in autumn, seriously affecting the yield and quality of the following year. So for this phenomenon, measures should be taken in the orchard in time to avoid a reduction in yield the following year. So what causes fruit trees to bloom again in autumn? How should it be solved? Let's take a look together.

1. Variety reasons

Different varieties of fruit trees have different adaptability to the external environment. During the high temperature and drought of summer and autumn, if the fruit trees are not irrigated in time to resist drought, their nutrient uptake decreases, their growth vigor weakens, and their vegetative growth is poor. At the same time, different fruit trees also respond differently to the stress caused by drought. In European varieties that are prone to stress, when the plant shifts from vegetative growth to reproductive growth, the possibility of blooming in autumn is high.

Solution: When selecting varieties, be sure to choose varieties with strong adaptability, strong stress resistance, strong drought resistance, resistance to pests and diseases, and high yield, so as to avoid the occurrence of a second bloom.

2. Improper orchard management

If pruning is improper during orchard management, the canopy structure becomes chaotic and ventilation and light penetration are poor, which can easily lead to pest and disease damage and cause a large amount of leaf drop. The cause of premature leaf drop is that the accumulation of photosynthetic products in the fruit trees is low and the nutrient storage in the tree body is low, which is unfavorable to flower bud differentiation, causes early entry into dormancy, and triggers a second bloom in autumn. Sometimes the orchard applies heavy chemical fertilizers and no or little organic fertilizer, resulting in poor tree vigor, which can also cause a large amount of leaf drop and promote the occurrence of a second bloom.

Solution: According to the different growth characteristics of fruit trees, fertilize reasonably, apply heavy organic fertilizer, strengthen tree vigor, and reasonably match nitrogen, phosphorus, and potassium fertilizers. During the fruit growth period, spray foliar fertilizer in combination with fertilization.

3. Climate effects

In summer, orchards receive more rainfall, and water accumulation affects the growth and absorption capacity of fruit trees, causing weakened tree vigor. If high temperature and drought weather occur again in autumn, it will cause a large amount of leaf drop and a second bloom in fruit trees. In November, when the weather is warm like spring and the soil has sufficient fertilizer and water, flower buds can also differentiate early and produce reblooming flowers.

Solution: For low-lying orchards, open good drainage ditches, drain accumulated water in time when there is a lot of rain in summer, and divert water in time to resist drought and protect leaves during autumn drought.

4. Damage from pests and diseases

Orchards of pear, peach, plum, and other fruit trees have many types of harmful pests and diseases. When control is not timely or no control is carried out, it often leads to a large amount of leaf drop in the orchard and early entry into dormancy. When there is more rainfall in autumn and the climate is suitable, a large number of reblooming flowers will appear.

Solution: After fruit trees enter the leaf drop period and before spring budbreak, prune off diseased and pest-infested branches, overly dense branches, excessively vigorous branches, and diseased and pest-damaged fruit, and sweep up fallen leaves. After burning them in a centralized manner, bury the ashes deeply. Spray lime sulfur mixture several times in winter to reduce the pest and disease base.

  The above is an introduction to the causes and solutions of fruit trees blooming again in autumn. I hope it can help you. To learn more related knowledge, please follow us.