The vegetation period (also vegetation phase or period) is the rhythmically repeating part of the year in which a plant actively grows and develops. The study of the associated biological processes is called phenology. In viticulture, the growing season is the period from the last frost (late frost) in spring to the first frost (early frost) in autumn. This should be at least 180 days. The remaining part of the year during which a perennial plant does not grow is referred to as the vegetation dormancy, rest period or dormant season. The totality of the annually recurring growth phases of a plant including the dormant period is the vegetation cycle. In viticulture, however, the vegetative cycle of the vine is often understood as a period without a dormant period.
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Fachjournalistin, Lektorin und Verkosterin, Wien