Annual Growth Cycle of Grapevines - Bud Break

In the Spring, the grapes start their annual growth cycle with the bud brake. Tiny buds on the vine start to swell and eventually shoots begin to grow from the buds. Buds are the small part of the vine that rest between the vine's stem and the petiole (leaf stem). Inside the buds contain usually 3 primordial shoots. These buds appear in the summer of previous growth cycle green and covered in scales. During winter dormancy, they turn brown until the Spring, when the vine begins the process of bud break and the first sign of green in the vineyard emerges in the form of tiny shoots. Eventually, the shouts sprout tiny leaves that can begin the process of photosynthesis, producing the energy to accelerate growth.


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