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  • Flowering

    THE VINE’S GROWTH CYCLE III – Flowering and Fruit Set

    Flowering Depending on temperatures, 40–80 days after bud break the process of flowering begins with small flower clusters appearing on the tips of the young shoots looking like buttons. Flowering occurs around may when average daily temperatures stay between 15–20 °C (59–68 °F). A few weeks after the initial clusters appear, the flowers start to grow in size with individual flowers becoming observable.  It is during this stage of flowering that the pollination and fertilization of the grapevine takes place with the resulting product being a grape berry, containing 1-4 seeds. Each flower has the potential to form a single grape berry. Frost …

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