The Triomphe d'Alsace vine is fairly vigorous and very robust, growing rapidly even in cool climates. The leaves are not deeply indented and can grow to a very large size, producing a dense canopy which has to be thinned to promote ripening and to suppress mildew. They become very tough and leathery with age, although they can be stuffed and eaten when young. The grapes are generally small and grow in a profusion of small bunches. They ripen early, and often suddenly, even in cool and damp summers, although harvest may have to be postponed as late as October. Good crops are possible at least in the Midlands and North of England, and still further north in favourable situations. However, the variety is not so robust against disease and can suffer from mildew if the autumn is exceptionally wet.
can suffer from mildew if the autumn is exceptionally wet.