Budbreak: Refers to the start of the new growing season, when tender green buds emerge in early spring’s warm temperatures; typically March in the Northern Hemisphere and September in the Southern Hemisphere. The vines are especially vulnerable to frost at this stage.

发芽： 泛指新的生长季开始，在早春温暖的气温下，葡萄藤上开始出现嫩绿的芽；发芽期通常是在北半球的3月份和南半球的9月份。这个时期葡萄藤很容易遭受霜冻危害。