When do grapes bloom?
This article introduces the related experience of grape planting, specifically focusing on when grapes bloom. Let's explore together.
When do grapes bloom?
In the north, grapevines usually start to flow sap at the end of April, and begin to bloom around the beginning of May. The duration of the grape blooming period is related to the variety and climate, as follows:
When do grapevines bloom?
Grapevines usually start to flow sap at the end of April, and bloom around the beginning of May. The time from germination to blooming of grapes is closely related to climate conditions, especially temperature, usually requiring 40-70 days. Generally, when the average day and night temperature reaches about 20 degrees Celsius, grapes will start to bloom.
The duration of the blooming period of grapes will vary with the variety and climate conditions. Typically, most grape blooming periods last 6-10 days. If the weather is cool or there are consecutive rainy days, the blooming time of grapes will be affected and the blooming period may be extended accordingly.
Management methods after grape blooming
Scientifically retain flowers, reasonably determine yield: The number of flowers and fruits that different-aged grapevines can produce is limited. If there are too many grape flowers, it becomes a burden on the vine. Generally, for the first year of fruiting, it is sufficient to retain 8-10 flower spikes, and for the second year of fruiting, 14-16 flower spikes are enough.
Properly thin fruit: To ensure the quality of the grapes in the later stage, it is necessary to thin the fruit after the grapes have dropped. The general principle of thinning is to ensure yield as much as possible while maintaining quality.
Prevent diseases and pests: Ten days before the grapes bloom, it is necessary to carry out pest control. A fungicide such as Mancozeb can be used for spraying to prevent the grapes from being infected with diseases like black rot and gray mold.
This article shares specific content about when grapes bloom, for everyone's reference and operation.